installation and maintenance manual compact cb … · preface installation and maintenance manual,...

Installation and Maintenance Manual

Compact CB 280-840

EN683-3h 2004

2

Preface Installation and Maintenance Manual, Compact CB

PrefaceHägglunds Drives is one of the worlds leading manufacturers of large hy drau lic Drive Systems. A leading position, made possible by unbeatable service spi rit and of continuing development of both products and markets all over the world. Our drives are to be found in most industrial and marine seg ments, where there are extremely high demands for effi ciency and reliability. Our main offi ce and production plant is in Mel lan sel, Sweden and we have our own sales- and re pre sen ta tion offi ces in some 40 different countries.

Our high quality Drive Systems, are based upon our unique hydraulic piston motors, developed through a wealth of experience accumulated over 30 years in marine and industrial areas.Today this ongoing development work has resulted in the powerful COMPACT CB industrial motor. New, as well as esta blis hed technical solutions, contribute to the creation of this product. The most desirable features and ope ra ting reliability have been designed in this hy drau lic motor.

This manual provides necessary information for installation and maintenance of the motor. In order to fi nd particular information, just search for the wanted section as listed in the table of contents. However, changes in the equipment may occur. We therefore reserve the right to introduce amendments in the manual as we deem necessary without notice or obligations.

This Installation and Maintenance Manual is valid for motors manufactured after 02-01-01.

Orig

inal

EN

683-

2h, 2

002

3

Installation and Maintenance Manual, Compact CB Contents

Contents1. GENERAL ........................................................................................................................41.1 Safety precautions .. .........................................................................................................41.2 Motor data ........................................................................................................................51.3 Functional description ......................................................................................................6

2. TECHNICAL DATA ..........................................................................................................72.1 Recommended charge pressure ......................................................................................72.2 Sound from a complete installation ..................................................................................82.3 Choice of hydraulic fl uid ...................................................................................................9 Environmentally acceptable fl uids ..................................................................................10

3. INSTALLATION ..............................................................................................................113.1 Mounting instructions .....................................................................................................11 Thread for mounting tool ................................................................................................12 Spline ............................................................................................................................123.1.1 Lifting methods ...............................................................................................................13 Standing the motor on a fl at surface ...............................................................................143.1.2 Mounting the coupling onto the motor shaft ...................................................................153.1.3 Fitting the torque arm to the motor . ...............................................................................173.1.4a Mounting the motor onto the driven shaft - shaft coupling ..............................................183.1.4b Mounting the motor onto the driven shaft - splines .........................................................213.1.5 Removing the motor from the driven shaft .....................................................................223.1.6 Mounting the reaction point . ..........................................................................................233.2 Oil connections ...............................................................................................................243.2.1 Direction of rotation of motor shaft .................................................................................263.2.2 Draining and venting the motor ......................................................................................363.2.3 Flushing ..........................................................................................................................27

4. OPERATING INSTRUCTIONS ......................................................................................284.1 Storage ...........................................................................................................................284.2 Before commissioning ....................................................................................................284.3 Commissioning ...............................................................................................................294.4 Periodic maintenance .....................................................................................................29 Maintenance chart ..........................................................................................................29 Motor ..............................................................................................................................30 Filters ..............................................................................................................................31 Oil ...................................................................................................................................314.5 Oil inspection .................................................................................................................31

5. FAULT FINDING .............................................................................................................32 DECLARATION OF CONFORMITY ..............................................................................33

4

1.1 Safety precautions

1. GENERAL

General Installation and Maintenance Manual, Compact CB

It is of high importence that the Safety precautions are always followed, if you are un sure about some thing, please don´t hesitate to contact your nearest HD-offi ce for ad vice.

WARNING is used to indicate the presence of a hazard which can cause severe personal injury, death, or substantial property damage if the warning is ignored.

DANGER is used to indicate the presence of a hazard which will cause severe personal injury, death, or substantial property damage if the warning is ignored.

CAUTION is used to indicate the presence of a hazard which will or can cause minor personal injury or property damage if the warning is ignored.

In this manual you will fi nd the following signs which indicate a potential hazard, which can or will cause per son al enjury or sub stan tial property damage. Depending on the prob a bil i ty of the hazard, and how serious the injury or property damage could be, there are three levels of clas si fi ca tion.

Warning signs

Application area

Mounting

Before starting up

All new and rebuild applications, should always be approved and supervised by Hägglunds personel.

Before starting up new, rebuild or just worked on applications, all accessories and safety ar range ments functions, should be con trol led/tested.

Carefully follow the instructions and be aware of the high weights and forces during lifting.

Periodic maintenanceNotice the intervals in maintenance chart (4.4) and keep a record.

Dismounting Carefully follow the instructions and be aware of the high weights and forces during lifting.

5

US

Installation and Maintenance Manual, Compact CB General

Table 1.1

Metric

1.2 Motor data

*) Related to a required pressure of 12 bar/175 psi for motors in braking mode. (Special considerations regarding charge pressure, cooling and choice of hydraulic system for speeds above rated, 4 ports must be used for higher speed).**) The motors are designed according to DNV-rules. Test pressure 420 bar/6000 psi. Peak/transient pressure 420 bar/6000 psi maximum, allowed to occur 10000 times.1) Special considerations regarding charge pressure, cooling and choice of hydraulic system for speed above rated.2) Calculated as : Metric= Ts·(350-15)·0,98 US= Ts·(5000-218)·0,98.3) Valid for minimum permissible oil viscosity 20 cSt in the motor case.

Motor type Displace-ment

Specifi c torque

Rated*speed 1)

Max speed Max.**pressure

Max. torque 2)

Max. power 3)intermittently

Vicm3/rev

TsNm/bar

nrev/min

nrev/min

pbar

kNm kW

CB 280-240 15 100 240 53 68 350 79 530

CB 280 17 600 280 44 58 350 92 530

CB 400-240 15 100 240 94 125 350 79 970

CB 400-280 17 600 280 73 105 350 92 950

CB 400-320 20 100 320 71 94 350 110 970

CB 400-360 22 600 360 59 82 350 120 960

CB 400 25 100 400 58 75 350 130 970

CB 560-440 27 600 440 49 65 350 140 930

CB 560-480 30 200 480 48 62 350 160 970

CB 560-520 32 700 520 41 57 350 170 960

CB 560 35 200 560 40 53 350 180 970

CB 840-600 37 700 600 30 45 350 200 880

CB 840-640 40 200 640 28 41 350 210 850

CB 840-680 42 700 680 27 40 350 220 890

CB 840-720 45 200 720 25 37 350 240 870

CB 840-760 47 800 760 23 34 350 250 840

CB 840-800 50 300 800 23 34 350 260 890

CB 840 52 800 840 21 32 350 280 870

Motor type Displace-ment

Specifi c torque

Rated*speed 1)

Max speed Max.**pressure

Max. torque 2)

Max. power 3)intermittently

Viin3/rev

Tslbf·ft/1000 psi

nrev/min

nrev/min

ppsi

lbf·ft hp

CB 280-240 920 12 200 53 68 5000 57 000 710

CB 280 1070 14 200 44 58 5000 67 000 710

CB 400-240 920 12 200 94 125 5000 57 000 1300

CB 400-280 1070 14 200 73 105 5000 67 000 1300

CB 400-320 1230 16 300 71 94 5000 76 000 1300

CB 400-360 1380 18 300 59 82 5000 86 000 1300

CB 400 1530 20 300 58 75 5000 95 000 1300

CB 560-440 1690 22 400 49 65 5000 100 000 1300

CB 560-480 1840 24 400 48 62 5000 110 000 1300

CB 560-520 1990 26 400 41 57 5000 120 000 1300

CB 560 2150 28 500 40 53 5000 130 000 1300

CB 840-600 2300 30 500 30 45 5000 140 000 1200

CB 840-640 2450 32 500 28 41 5000 150 000 1100

CB 840-680 2610 34 600 27 40 5000 160 000 1200

CB 840-720 2760 36 600 25 37 5000 170 000 1200

CB 840-760 2910 38 700 23 34 5000 180 000 1100

CB 840-800 3070 40 700 23 34 5000 190 000 1200

CB 840 3220 42 700 21 32 5000 200 000 1200

6

1.3 Functional description

1

2

3

4

5

6

7

D 8

A, C

Fig. 1 The COMPACT CB motor

10

9

11

Hägglunds hydraul ic industr ial motor COMPACT CB is of the radial-piston type with a ro ta ting cylinder block/hollow shaft and a stationary housing. The cylinder block is mounted in fi xed roller bearings in the housing. An even number of pistons are radially located in bores inside the cylinder block, and the valve plate directs the incoming and outgoing oil to and from the working pis tons. Each piston is working against a cam roller.

When the hydraulic pressure is acting on the pistons, the cam rollers are pushed against the slope on the cam ring that is rigidly connected to the housing, thereby producing a torque.The cam rollers transfer the reaction force to the piston which are guided in the ro ta ting cy lin der block. Ro ta tion therefore occurs, and the torque available is pro por tio nal to the pressure in the system.

Oil main lines are connected to ports A and C in the connection block and drain lines to ports D1, D2, D3 or D4 in the motor housing.

The motor is connected to the shaft of the dri ven machine through the hollow shaft of the cylinder block.The torque is transmitted by using a mechanical shaft coupling, or alterna-tively by splines.

Valid patents

US 4522110, US 005979295A, SE 456517, EP 0102915, JP 83162704, GB 1385693, EP No 0524437.

Quality

To assure our quality we maintain a Quality Assurance sys tem, certifi ed to stan dard ISO 9001, EN 29001 and BS 5750; Part 1.

General Installation and Maintenance Manual, Compact CB

1. Cam ring

2. Cam roller

3. Piston

4. Shaft coupling

5. Cylinder block / hollow shaft

6. Cylinder block / spline

7. Front end cover

8. Cylindrical roller bearing

9. Connection block

10. Valve plate

11. Axial bearing

A = inlet or outlet port »A«

C = inlet or outlet port »C«

D = drain port

7

Recommended charge pressure - CB 280-840 2-port connection

0

2

4

6

8

10

12

14

16

18

20

0 10 20 30 40 50 60 70 80Speed [rpm]

Rec

omm

ende

dch

arge

pres

sure

[bar

]

0

50

100

150

200

250

Rec

omm

ende

dch

arge

pres

sure

[psi

]

CB

840

CB

840-

800

/CB

840-

760

CB

840-

680

/CB

840-

640

CB

840-

720

CB

840-

600

CB

400-

320

CB

400

/CB

400-

360

CB

280-

240

CB

560-

480

/CB

560-

440

CB

280

CB

560

/CB

560-

520

There are two distinct cases:

Case 1:

The motor works in braking mode. Required charge pressure at the inlet port is according to diagram below.

Case 2:

The motor works in driving mode only. Required back pressure at the outlet port corresponds to 30% of value given in di a gram below, but may not be lower than 2 bar (29 psi).

The hydraulic system must be such that the motor will recieve suffi cient charge pressure at the low-pressure port. This applies to all types of installations.

Note:

The diagram is valid for 1 bar (15 psi) case pressure. With increasing case pressure the charge pressure must be increased accordingly. The graph is valid when 4 ports are used. Max casing pressure is 3 bar (43,5 psi)(for 1% of the operation time evenly divided, pressure peaks of max 5 seconds upto 8 bar (116 psi) are allowed). Max permitted case pressure at stand-still is 8 bar (116 psi).

Installation and Maintenance Manual, Compact CB Technical data

2. TECHNICAL DATA

2.1 Recommended charge pressure

In hanging load applications, charge pressure at motors connection must be according to graph below under all con di tions.

Table 2.1a Charge pressure

RECOMMENDED CHARGE PRESSURE - COMPACT CB MOTORS

Single port connection (2 ports) oil viscosity 40 cSt / 187 SSU

8

Speed [rpm]

0

2

4

6

8

10

12

14

16

18

20

0 10 20 30 40 50 60 70 80 90 100

Rec

omm

ende

dch

arge

pres

sure

[bar

]

0

50

100

150

200

250

Rec

omm

ende

dch

arge

pres

sure

[psi

]

CB

840

CB

840-

800

/C

B84

0-76

0

CB

840-

680

/C

B84

0-64

0

CB

840-

720

CB

840-

600

CB

400-

320

CB

400

/C

B40

0-36

0

CB

280-

240

CB

560-

480

/C

B56

0-44

0

CB

280

CB

560

/C

B56

0-52

0

2.2 Sound from a complete installation

Technical data Installation and Maintenance Manual, Compact CB

Hydraulic motor

The hydraulic motor is a known noise level. (Tables of sound data - see subsection 4.9 in the Engineering Manual).

Driven unit

The driven unit is an unknown sound source (for us) but can through certain information probably be obtained from the supplier. When securing the torque arm of a hydraulic motor to the foundation or casing of a driven machine, it is highly important to study the construction of the foundation or casing. This may well be the most important factor to consider, since many structures may give rise to resonance, resulting in severe noise problems.

Remarks:

Background noise

The background noise can not normally be infl uenced but is usually known or easy to measure.

Pump unit

The pump unit is a known noise level.

Pipe noise

The pipe noise is probably the source of the ma jor ity of mistakes in installations: all pipe clamps should be of vibration insulating type secured to concrete ceiling, wall or floor. Securing to non-rigid metal structures or structures is likely to give resonance and should be avoided.

Background noise

Pump motor

Pipe noise

Hydraulic motor

Noise from driven unit

Foundation and construction noise

RECOMMENDED CHARGE PRESSURE - COMPACT CB MOTORS

Double port connection (4 ports) oil viscosity 40 cSt / 187 SSU

Table 2.1b Charge pressure

9

Installation and Maintenance Manual, Compact CB Technical data

2.3 Choice of hydraulic fl uid

The Hägglunds hydraulic motors are primarily designed to operate on conventional pet ro le um based hydraulic oils. The hydraulic oil can be chosen in consultation with the oil supplier of your local sales offi ce, bearing the following requirements in mind:

GENERAL

The oil shall have FZG (90) fail stage minimum 11 described in IP 334 (DIN 51354). The oil must also contain inhibitors to prevent ox i da tion, corrosion and foaming. The viscosity of mineral oil is highly dependent of the temperature. The fi nal choice of oil must depend on the operating tem pe ra tu re that can be expected or that has been esta blis hed in the system and not in the hydraulic tank.

Fire resistant fl uids OPERATING WITH FIRE RESISTANT FLUIDSThe following fl uids are tested for Hägglunds motors: (ISO/DP 6071)

* Many hydraulic fl uids with VI-improvers are subject to temporary and permanent reductions of the viscosity.

** Low viscosity gives reduced service life for "COMPACT CB".

IMPORTANT!Down rating of pressure data and service life must be considered when using fi re resistant fl uid. The Hägglunds company or its authorised representative must always be contacted for approval in the case of these types of fl uids.

RECOMMENDED VISCOSITY AT OPERATING TEMPERATURE

40-150 cSt/187-720 SSU.

FOR SPEEDS BELOW 3 RPM, COATED PISTON OR HIGH VISCOSITY SHALL

BE USED.

High temperatures in the system greatly reduce the service life of oil and rubber seals, as well as resulting in low viscosity, which in turn prov ides poor lubrication.

Content of water shall be less than 0,1%.

In Industrial applications with high demands for service life, the content of water shall be less than 0,05%.

* Must be specifi ed in the order.

Temperature limits

Normal operating temperature should be less than +50°C (122°F)

Nitrile seals (std motor)Viton seals

-35°C to +70°C-20°C to +100°C

Nitrile seals (std motor)Vition seals

-31°F to +158°F -4°F to +212°F

Viscosity limits

Viscosity index = 100 recommended= 150* for operation with large temperature difference

Min. permitted in continuous dutyMin. permitted in intermittent dutyMax. permitted

40 cSt/187 SSU20 cSt/98 SSU**10000 cSt/48000 SSU

Fluid Approved Seals Internal paint

HFA: Oil (3-5%) in water emulsion No - -

HFB: Inverted emulsion 40-45% water in oil Yes Nitrile (std motor) Not painted*

HFC: Water-glycol Yes Nitrile (std motor) Not painted*

HFD synthetic fl uids

HFD:R - Phosphate esters Yes Viton Not painted*

HFD:S - Chlorinated hydrocarbons Yes Viton Not painted*

HFD:T - Mixture of the above Yes Viton Not painted*

HFD:U - Other compositions Yes Viton Not painted*

10

Environmentally acceptable fl uids

Explanation of "GRADE OF FILT RA TION"

Grade of filtration β10=75 indicates the following:

β10 means the size of particle ≥10µm that will be removed by fi lt ra tion.

=75 means the grade of fi ltration of above mentio ned size of particle. The grade of fi lt ra tion is defi ned as number of particles in the oil before fi ltration in relation to number of particles in the oil after fi ltration.

Ex. Grade of fi ltration is β10=75.

Before the fi ltration the oil contains N number of particles ≥10µm and after pas sing the fi lter

once the oil contains number of particles ≥10µm.

This means that number of particles have been fi ltered (=98,6%).

* Vegetable fl uids give good lubrication and small change of viscosity with different temperature. Vegetable fl uids must be controlled every 3 months and temperature shall be less than +45° (113°F) C to give good service life for the fl uid.

** Environmental acceptabel fl uid gives the same servicelife for the drive, as mineral oil.

Technical data Installation and Maintenance Manual, Compact CB

Filtration

The oil in a hydraulic system must always be fi ltered and also the oil from your supplier has to be fi ltered when adding it to the sys tem. The grade of fi ltration in a hydraulic sys tem is a question of service life v.s. money spent on fi lt ra tion.

In order to obtain stated service life it is important to follow our recommendations concerning con tami na tion level.

When choosing the fi lter it is important to consider the amount of dirt particles that the fi lter can absorb and still operate satisfactory. For that reason we recommend a fi lter with an indicator that gives a signal when it is time to change the fi lter cartridge.

Filtering recommendations

Before start-up, check that the system is thoroughly cleaned.

1. In general the con tami na tion level in our motors should not exceed ISO 4406 19/15. (NAS 10)

2. For heavy-duty industrial applications the contamination level should not exceed ISO 4406 16/13. (NAS 7)

3. When fi lling the tank and motor housing, we recommend the use of a fi lter with the grade of fi ltration β10=75.

Fluid Approved Seals Internal paint

Vegetable */** Fluid HTG

Yes Nitrile (std motor) -

Synthetic ** Esters HE Yes Nitrile (std motor) -

11

3. INSTALLATION

Fig. 3.1

Normally-loaded shaft

In drives with only one direction of rotation where the stresses in the shaft are mo de ra te, the shaft can be plain, see Fig. 3.2 and tables 3.1 and 3.5

Fig. 3.2

Note! The dimensions are valid for +20°C (68°F)

-0,015 -0,061

-0,00059 -0,00240

-0,014 -0,054

-0,00055 -0,00213

-0,017 -0,069

-0,00067 -0,00272

�E

�C

�A D

30°

R 3,2

G

F

6±0,5

B±0,5(B±0,02)

(0,24±0,02)R 50(R 1,97)

a

3.1 Mounting instructions Design of driven shaft end on heavily-loaded shaft

Where the driven shaft is heavily loaded and is subject to high stresses, for example on changes in the direction of rotation, it is recommended that the dri ven shaft should have a stress relieving groove; see Fig. 3.1 and tables 3.1 and 3.4.

If the motor is to work properly it must be installed with the greatest possible pre ci si on. Every item connected to the motor that does not meet the requirements of the following instructions may result in stresses that adversely affect the service life of the motor.

Normally the motor must be completely fi lled with oil. When the motor is installed with the shaft in the horizontal plane, the drain ports must be positioned vertically. The higher of the four ports must be used: see fi g. 3.25.

When the motor is mounted with the shaft in the vertical plane, see 3.2.2 "Draining and ven ting the motor".

The drain line must be dimensioned so that max. 3 bar (43.5 psi) motor housing pressure is not exceeded.

The max housing pressure is 3 bar (43.5 psi). Brief peaks during operation up to 8 bar (116 psi) are permissible. The permitted housing pressure when the motor is stationary is 8 bar (116 psi).

The motor must always be connected in such a way as to give a suffi cient boost, make-up fl ow at the low pressure connection. This is particularly important at high speeds and with rapid reversing, see 2.1 "Recommended char ge pressure".

Installation and Maintenance Manual, Compact CB Installation

Table 3.2

Table 3.1 Valid for couplings

Max

Max

Unidirectional drives

Bidirectional drives

Steel with yield strength Relmin= 300 N/mm2


Dim CB 280 CB 400 CB 560/840

A mm in

1807.0866

2007.8740

26010.2362

B mm in

1064.17

1174.61

1536.02

C mm in

1746.85

1947.64

25410

12

Spline Thread for mounting tool

-0,088

-0,157

-0,103

-0,181

0

-1,201

0

-0,290

0

-0,320

0

-1,201

Table 3.4

The splines shall be lubricated, with hydraulic oil or fi lled with trans mis sion oil from the con-nected gearbox. To avoid wear in the splines, the installation must be within the specifi ed tolerances in fi g. 3.3. If there is no radial or axial force on the shaft, the shaft can be oiled only.

For production of the shaft, see 278 5023, 278 5024, 278 5025 and 278 5026. For control of spline see ta ble 3.4.

To make it easier to mount the motor on the driven shaft end or to remove the motor from the shaft it is recommended that a hole (Table 3.5) should be drilled and tapped in the centre of the shaft for a mounting tool; see 3.1.4 "Mounting the motor onto the driven shaft", and 3.1.5 "Removing the motor from the driven shaft".

The tool has both a UNC thread and a metric thread, so that the hole can be drilled and tapped to conform to one of the two alternatives given in table 3.5.

Installation Installation and Maintenance Manual, Compact CB

Fig 3.3

Table 3.5 Alternative thread (Fig.3.1 and 3.2)

Unidirectional drives

Bidirectional drives



0,4 A

ø

A

ø

0,15 A

Table 3.3

(0,006)

(0,015)

CB 280 - 840

DEFG

M20>17 (0,67)25 (0,98)50 (1,97)

UNC 5/8">13,5 (0,53)22 (0,87)30 (1,18)Motor CB 280/400 CB 560/840

Toth profi le and bottom form

DIN 5480 DIN 5480

Tolerance 8f 8f

Guide Back Back

Pressure angle 30° 30°

Module 5 5

Number of teeth

38 50

Pitch diameter Ø 190 Ø 250

Minor diameter Ø 188 Ø 248

Major diameter Ø 199 Ø259

Measure over measuring pins 210,158 270,307

Diameter of measuring pins

Ø 10 Ø 10

Addendum modifi cation X M

+2,25 +2,25

13

3.1.1 Lifting methods

Fig. 3.4a

Always make sure where the centre of grav i ty is before any lifting.


Always make sure where the centre of gravity is before any lifting. Never stand below a hanging motor or torque arm.

Fig. 3.4b

Fig. 3.5

Fig. 3.4c

14

Table 3.6

Lifting straps must be chosen with reliable saftey margin over the total weight of the lifted object.

Table 3.7

Fig. 3.6

Fig. 3.7

When the motor is placed on a fl at surface such as a fl oor, it must stand either on its outer di a me ter or on the suitably protected end face of the hollow shaft (see Fig. 3.6 and 3.7).

NOTE:

Standing the motor on a fl at surface


The motor must not be placed on the end face of the hollow shaft when the coupling is fi tted, since this may cause damage to the coupling.

When in storage, the motor must always be placed on the end face to the hollow shaft. It is also advisable to provide supports at the mounting surface of the motor; see Fig. 3.7.

Support

Support

Motor Motor with shrink disc

Motor with splines

kg lb kg lb

CB 280 800 1760 705 1555

CB 400 1160 2555 1060 2335

CB 560 1290 2840 1115 2450

CB 840 1620 3570 1445 3185

Torque arm Weight

kg lb

TCA 40

TCA 84

128

224

282

493

15

Before the motor is mounted there are some preconditions which must be fulfi lled: - You should note that the couplings are from the factory lubricated with MoS2 (Molycote) on the conical surfaces and the bolts,see fi g. 3.8. This lubricants shall remain on those surfaces but:

It is therefore important that you clean your hands free from Molycote. If those conditions are full fi l led you may start the mounting.

- Clean the driven shaft and the out- and in si de of the Compact motor hollow shaft.

- Remove the spacers between the two clamping rings of the coupling.

- Mount the coupling on the hollow shaft of the motor. The coupling must be pushed right up to the stop of the shaft. Use a screwdriver to open the coupling ring for easier mounting.

- Mount the motor onto the driven shaft by following the instruction in the section 3.1.4. (With or without using the mounting tool).

3.1.2 Mounting the coupling onto the motor shaft

Molycote must un der no circumstances be trans-ferred to the surfaces between the driven shaft and the motor.


Never tighten the coupling screws until the motor has been mounted onto the dri ven shaft.

-The conical surface between the coupling ring and the clamping rings + the bolts shall be coated with MoS2 (Molycote), see Fig. 3.8. This is done from the factory at delivery! When a motor has been in for overhaul or service and shall be reassembled it may be necessary to relubricate those surfaces with Molycote again but remember only the specifi ed surfaces!

Remember:

-Absolutely No Molycote on the surfaces between shaft-motor. Clean the driven shaft and the inside of the motor hollow shaft.

- Alignment of the motor on the shaft. (Dimensional check).

- Minimum variation in the gap between the clamping rings (Dimensional check).

- Right torque on the bolts. (Use torque wrench).

Before starting the motor, check that the rotating coupling can not cause damage.

16

Coupling ring

Clamping rings

- - - - - = Coated sur fa ce


Fig. 3.8

Washer

Seal

Cleaned surfaceMotor hollow shaft

Centre of motor

17

3.1.3a Fitting the torque arm to the motor

Note: Use torque wrench and oiled screws!

Table 3.8

Do not weld, drill, grind or carry out any similar work on the torque arm without Hägglunds approval.

Fig. 3.9 CB 280/400The torque arm is fi tted to the motor before the motor is mounted on the driven shaft.

- Clean the spigot surface on the torque arm and motor.

- Oil the screws.

- Make sure that the torque arm will be pointing in the right direction when the motor is mounted in place on the machine. To achieve the high est possible oil level in the mo tor housing, the motor must be turned until the drain outlets are positioned according to fi g 3.12.

- Line up the torque arm on the motor by using the screws with washers.

- Tighten the screws to the torque stated in the table below.


Fig. 3.9a CB 560/840

Motor Screw dimension Number of screws

Tightening torque

Nm lbf·ft

CB 280/400

CB 560/840

M20 Strength class 10.9

M24 Strength class 10.9

34

41

540

900

400

660

18


3.1.3b Fitting the double ended torque arm

The torque arm is fi tted to the motor before the motor is mounted on to the driven shaft. See 3.1.3a "Fitting the torque arm to the motor".

Alt. 1:

Check and adjust the rod end (pos 1) accord-ing to the drawing. Mount the rod to the torque arm, use the shaft (pos 2) and lock them with circlips. Tighten the 4 pcs of screw (pos 3) on the rod end, Torque according to table 3.7b.

Mount the hydraulic cylinder. The piston rod has to be mounted upwards, and on the right hand viewed from the motors main connection side. Cylinders oil connection A, B and C must point in the direction to the motor. Mount the hoses. The hose mounted to the high pres-sure connection (C) has to be mounted to the hydraulic cylinders connection B, and the hose from connection (A) has to be mounted to the cylinders connection A.

This is valid with the cylinder on the right side hand-side of the the motor, and a single speed motor.

Remark! Start the system and run it for some minutes. Vent the cylinder from air. Use the vent screws on the cylinder (pos 4).

Fig. 3.9b

Cylinder Screw dimension

Tightening torque

Nm lbf·ft

63/4563/5070/4580/5080/5680/63

M10 x 30 49 36

Table 3.7b

19

3.1.4a Mounting the motor onto the driven shaft - shaft coupling

The motor can be mounted onto the driven shaft with or without a mounting tool, but the use of a mounting tool is recommended since it makes the work easier.

It is important to arrive at the correct clamping length between the driven shaft and the hollow shaft of the motor.

Ensure that the full clamping length is used by, for example, measuring and marking the dri ven shaft. This is of particular importance if the duty is so severe that a stress relieving groove has been made on the driven shaft. See Fig. 3.11, 3.11a and the table 3.9.

Mounting the motor with a mounting tool (Fig. 3.10a)

- Remove the End cover together with screws and washers.

- Align the motor with the driven shaft.

- Locate the existing plastic washer between the nut on the mounting tool and the bearing retainer.

- Pass the mounting tool through the centre of the motor, and screw it into the driven shaft to stated depth by using the key handle in the end of the tool.

- Pull the motor onto the shaft by turning the nut on the mounting tool until the length B is obtained; see Fig. 3.11, 3.11a and table 3.9. Push and pull the end of the torquearm for easier mounting.

- Tightening the shaft coupling see table 3.10.

- Remove the mounting tool.

- Refi t the plug.

- Refi t the end cover and tighten the screws together with washers. Torque 80 Nm (59 lbf·ft).

Fig. 3.10a Mounting the CB 280...840


Clean the driven shaft and the inside of the motor hollow shaft.

Fig.3.10b

1; Bearing retainer

2; Plastic washer

3; Nut

4; Mounting tool

3

2

1

4

20

Table 3.9

Mounting the motor without a mounting tool

The motor can be mounted onto the driven shaft without using a mounting tool, though this is more diffi cult and takes longer time. However, it is easier to mount the motor if during mounting the compressed air trapped within the hollow shaft is evacuated. To do this, remove the End cover as described in "Mounting the motor with a mounting tool"

Align the motor with the driven shaft using an overhead crane or lifting truck and press it carefully onto the shaft so that the length stated in the table beside is obtained, see Fig. 3.11.

To achieve the highest possible oil level in the motor housing, the motor must be tur ned until the drain outlets are positioned according to fi g 3.12.

Fig. 3.12Fig. 3.11 Without stress relieving groove

Fig. 3.11a With stress relieving groove


Motor Lenght

B mm B in

CB 280CB 400CB 560CB 800

106117153153

4.174.616.026.02

21

Note 1 Uncoated screws greased with MoS2.

Note 2 There is a metallic sign on every coupling with a tightening torque stamped on it. This torque is always to be used.

Note 3 Tightening torque value is critical. Use calibrated torque wrench.


Table 3.10

However for the tightening of the coupling screws the following must be observed:

Keep tension in your lifting wires to avoid a skew setting of the motor on the shaft during the tight ening of the screws. Wobbling caused by a skew setting of the motor gives extra forces on the main bearings.

In order to avoid the misalignment of the two clamping rings during the screw tightening, the gap between the rings must be measured in several places during the process, see Fig. 3.14. The difference between the measured gaps must never vary more than 1 mm (0,04") during any stage of the tight ening pro cess.

Pre-set the coupling screws in opposite pairs (12-6-3-9 o´clock) until you reach max. 50% of the torque specifi ed for the screws. It is very important that when you reach this stage the misalignment is controlled as described above.

Mark the screw heads at 12 o´clock with a pen or paint so that you can follow the turning sequence of the screws.

Set the torque wrench for the specified max i mum torque. Tightening torque of the coupling screws; see the sign on the coupling, or table 3.10.

Now start tightening the screws in sequence shown in Fig. 3.14.

Keep on doing this until you have reached the stated torque. Several passes are required before the screws are tightened to specifi ed torque. Keep checking the alignment of the coupling. (15-20 passes may be necessary).

When the specifi ed torque is reached it is important that all screws are tighte ned with specifi ed torque and that no further movement can be observed.

Tightening of shaft coupling

Motor type No of screws

Screw dim Strength class

Tightening torque Type of headNm lbf·ft

CB 280 12 M20 x 80

10.9 490 362 HexagonCB 400 15 M20 x 90

CB 560 20 M20 x 100

CB 840 20 M20 x 100

22


3.1.4b Mounting the motor onto the driven shaft - splines

Oil to be fi lled before tightening G1 plugg

For flange mounted motors, the spline shall normally not be subject to radial load.With no radial load, the splineshaft can be greased before mounting the motor. If the motor is subject to radial load, the splines shall be fi lled up with oil.

- Mount motor on to the shaft.

- Bolt the motor to the fl ange. Tightening torque, see Table 3.8.

- Fill up hydraulic oil to the G1 plug.

- Torque the G1 plug. MV=125 Nm/90 lbf.ft.

- Mount the end cover. MV=80 Nm/59 lbf.ft.

Oil to be fi lled before tightening bolt M20 L=100 mm

Torquearm mounted motorsMotors that carry radial load, must have the splines fi lled up with oil.

- Mount the spacer on the shaft. MV=450 Nm/300 lbf.ft.

- Mount motor on to the shaft.

- Fill hydraulic oil to the G1 plug.

- Mount special designed bolt.

- Torque the bolt. MV=385 Nm/280 lbf.ft.

- Mount the end cover. MV=80 Nm/59 lbt.ft.

Flange mounted motorso-ring

If oil here, it can be used for the spline. Then take away the o-ring.

10 (0,4) during fi lling of oil

Fig. 3.14 Fig. 3.14a

o-ring

Axial clearance min 5 (0.2)

Spacer

23

3.1.5 Removing the motor from the driven shaft

- Slacken the shaft coupling screws gradually; see Fig. 3.14 and 3.14a. Each screw should be slackened only about a quarter of a turn each time. Thus tilting and jamming of the collars or thread stret ching will be avoided. The screws must be slacke ned until the coupling ring is fully released.

- Remove the End cover and Bearing retainer together with screws and washers; see Fig. 3.15

- Locate the existing plastic washer outside the mounting tool nut.Then pass the tool through the centre shaft, and screw it into the driven shaft to stated depth.

- Screw in the nut of the tool until the Bearing retainer can be refi tted, torque 136 Nm (100 lbf·ft)

- Remove the motor from the driven shaft by unscrewing the nut of the mounting tool.

- Remove the Bearing retainer and mounting tool. Finally, refit the removed Bearing re tai ner, torque 136 Nm (100 lbf·ft) and End cover, torque 80 Nm (59 lbf·ft) as before.

Before dismounting the motor from the driven shaft the oil in the motor housing must be drai ned through the lower draining hole.

The motor can be removed from the shaft with or without the mounting tool. The ope ra tion is easier if the tool is used.

Removal by using the mounting tool

Fig. 3.15 Removal of Compact CB 280...840

2; Plastic Washer

4; Mounting tool3; Nut

1; Bearing retainer

43

2

1


Always make sure that the lifting equip ment is strong enough to handle the weight of the motor

Never stay below the mo tor during disassembly

Removing the motor without using the mounting tool

- Slacken the screws of the shaft coupling, see above "Removal of motors by using the mounting tool".

- Remove end cover and plug to allow air to enter the space in the hollow shaft of the mo tor; see “Mounting the motor without a mounting tool“. After removal of the motor, refi t the remo ved components as before.

- Carefully pull the motor off the driven shaft supported by an overhead crane or a liftingtruck.

24

3.1.6 Mounting the reaction point

Make sure that the foundation can with stand the forces from the torque arm.

Fig. 3.17

Fig. 3.16 Mounting of pivoted attachmentx = ±2 mm (0,079) misalignment in installation.x ≤ ±15 mm (0,59) movement when in use.


Fig. 3.18

Alternativeposition

Steel:EN 10113S355NDIN St E39BS 4360 Grade 50 C

DANGER ZONEIn case of failure of

torque arm installation

Note: The toggle bearing must be dismounted during welding.

Protected against corrosion, after welding.

The bearing shall be mounted so the slot in the outer race is perpendicular towards the load direction.The bearing shall be mounted with a mounting sleeve or tube applied on the bearing outer ring.

25

Installation Installation and Maintenance Manual, Compact

**SAE coupling J 518 C, code 62, 414 bar (6000 psi). 1 1/4" or 1 1/2" can be used.*** A2-connection and C2-connection is blocked at delivery. They are able to withstand max pressure.

Fig. 3.25

When using (heavy wall) piping and in frequent reversal drives, it is recommended to fi t fl exible hoses between the motor and piping to avoid damage due to vibration and to simplify in stal la tion of the motor. The length of the hoses should be kept fuirly short.

3.2 Oil connections

Fig. 3.25a

Table 3.11

Table 3.12

T4

Connection Description Remarks

C1, C2 Main connection If C is used as the inlet, the motor shaft rotates clockwise, viewed from the motor shaft side*.

A1, A2 Main connection If A is used as the inlet, the motor shaft rotates counter-clockwise, viewed from the motor shaft side*.

D1 Drain outlet Normally plugged at delivery.

D2, D3, D4 Alternative drain outlets Normally plugged at delivery.

F1, F2 Flushing connection For fl ushing of radial lip seal. Normally plugged.

F3 Flushing connection For fl ushing of axial bearing and motor case.

T1 Test connection Used to measure pressure and/or temperature at the main connections.

T2, T3 Test connection Used to measure pressure and/or temperature in drain oil.

T4 Pressure connection Connection for double ended torque arm.

Motor A** C** D1, D2, D4

D3 F1, F2

F3 T1, T2

T3 T4 ymm

y in

x mm

x in

CB 280...840 1 1/4"1 1/2"

1 1/4"1 1/2"

G1 1/4"

G1"

G 1/4"

G 1/2"

G1/4"M16

G 1/4"

G 1/2"

223223

8.788.78

99101

3,903.98

F3

26

Main connection A, C

Table 3.13

Drain connection D1, D2, D4 Test connection T


G1

1/4"

Fig. 3.25b

Fig. 3.25c Fig. 3.25d

G

Motor Connec-tion

amm (in)

b cmm (in)

CB 280 - 840 1 1/4"1 1/4"

31 (1,22) UNC 1/2"UNC 5/8"

27 (1.06)35 (1.38)

27

The motor must be connected to the drain line connection on the shaft end housing; see Figure 3.30.

The fl ushing connection F1 on the shaft end housing should be connected to the low pressure connection. With bi-directional drives, use the connection with lowest average pressure. (Con nec tion to high pressure will increase the mo tor drain fl ow). This gives fl ushing of the radial lip seal. It is advisable to fi t the nipple and the hose to the motor before fi tting the torque arm.

3.2.2 Draining and venting the motor

Horizontal mounting When the mo tor is installed with the shaft in the hori zon tal plane. The highest of the four drain outlets D1, D2, D3 or D4 must always be used; see Fig. 3.28.

Drain line must be connected direct to the tank with a minimum of restrictions, to ensure that the maximum housing pressure is not exceeded.

Vertical mounting When the motor is mount ed vertically, the highest of the four drain outlets D1, D2, D3 or D4 must be used. Flushing of radial seal from low pressure is necessary.

Motor shaft pointing downwardsThe motor must be connected to one of the drain connections in the connection block; see Figure 3.29. The fl ushing connection F2 shall be connected to low pressure connection. Orifi ce must be installed.

Motor shaft pointing upwards

Make sure that this checkvalve is con nect ed in the correct direction.


Fig. 3.263.2.1 Direction of rotation of motor shaft

With the inlet pressure supply connected to A port, the mo tor shaft ro ta tes in the direction shown by the arrow, anti-clockwise viewed from the mo tor shaft side.

With the inlet pressure supply connected to C port, the motor shaft rotates clockwise viewed from the motor shaft side.

C1A1

28


Fig. 3.28 Fig. 3.29

Max. power without fl ushingCB 280 120 kW (160 hp)CB 400/560/840 170 kW (227 hp)

For calculation of required fl ushing, please contact your Hägglunds representative.The fl ushing oil shall be drained in the nor mal drainline. See 3.2.2.

Connect the input line for fl ushing in F3, see Fig 3.31.Max allowed fl ushing 40 litres/min (11 gal./min).

Flushing of motor caseTo avoid high temperature in the motor case the heat must be removed, because high tem pe ra tu re gi ves lower viscosity and that gi ves reduction in basic ra ting life/service life.

- For continuous duty in applications with an ambient temperature of +20°C (68°F), the motor case must be fl ushed when the output power exceeds the values shown beside.

3.2.3 Flushing

Fig. 3.30

Drain line connection

Low pressure

G 1/4", Flushing connection F1

Orifi ce Ø1,0 (0.04)



Low pressure

Orifi ce Ø1,0 (0.04)

Fig. 3.31

G 1/2", Flushing connection F3

G 1/4", Flushingconnection F2

29

Installation and Maintenance Manual, Compact CB Maintenance

- Check that the charge pressure conforms to the char ge pressure curve (see 2.1 "Recommended charge pressure").

- Check that all hydraulic couplings and plugs are properly tightened to prevent leakage.

- Make sure that the torque arm is suffi ciently faste ned, see 3.1.3 and 3.1.6.

4. OPERATING INSTRUCTIONS4.1 Storage

4.2 Before commissioning

The motor is delivered with internal protection in the form of an oil fi lm and ex ter nal protection in the form of an anti-rust fi lm. This provides suffi cient protection for indoor storage in nor mal tempe ratu res for about 12 months.Note: the anti-rust protection must be touched-up after transport and handling.If the motor is stored for more than 3 months in uncontrolled environment or more than 12 months in controlled

Check the following points before commissioning the motor, i.e. before starting the fi rst time:- Check that the motor is connected to give the correct direction of rotation (see 3.2 "Oil connections" and

3.2.1 "Direction of rotation of motor shaft").- Select the hydraulic fl uid in accordance with the recommendations (see 2.3 "Choice of hy drau lic fl uid").- Fill the motor housing with hydraulic fl uid via a fi lter into the drain outlets D1, D2 or the vent hole (depending

on how the motor is mounted), see table 4.1.

Place the motor as shown in fi g 4.1, fi ll the mo tor with fi lte red oil in the following order: D1, A1, C1. See 2.3, "Filtration" and table 4.1.Take extreme care to ensure that no con tami na tion enters the motor. Seal connections A and C with the cover plate fi tted to the connection surface at deli ve ry. Check that the O-rings or rubber seals are in postion in the cover plate. Fit the plug to D1, D2, D3 and D4, the table below sta tes the amount of oil needed to fi ll the various types of motors.

Fig. 4.1

- Check the drain line to ensure that excessive pressure does not build up in the motor housing; see 3.1 "Mounting instructions" and 3.2.2. "Draining and ven ting the motor".

- Check that the motor is protected from overloads (see 1.1 "Motor data").

Table 4.1

Motor Oil volume approx.

Litres US gal.

CB 280CB 400CB 560CB 840

15211925

4.05.65.06.6

30

4.3 Commissioning 4.4 Periodic maintenance

- During initial star ting and the period immediately after it, any hydraulic installa-tion must be regularly and carefully checked at frequent intervals.

- The working pressure and charge pressure must be checked to ensure that they correspond to the contracted values.

- The pressure in the drain line measured at the motor must be less than 3 bar (43,5 psi). This pressure limit is important for the life of the motor seals.

- If leakage occurs, correct the fault and carry out new measurements.

- Check all lines, connections, screws, etc. and correct if necessary.

- Check other possible leakage points and replace faulty parts.

- During the start up period, dirt particles in the system are removed by the fi lters. The fi l ter cartridges have to be changed after the fi rst 100 working hours and after that according to the maintenance chart. see 4.4 note to check the "fi lter clogged" indicators.

When a hy drau lic system has been in ser vi ce for some time, it must und er go periodic maintenance and servicing at intervals which depend on the equipment and the type of

duty.This periodic maintenance must include the following operations:

- Check the hydraulic system for leakage. Tighten the screws, replace faulty seals and keep the drive clean.

- Inspect and clean all air, oil and magnetic fi lt ers; replace all fi lter cartridges for which a fi lter clogged indication has been given; inspect tank, pump, fi lters etc. and clean if

Rpl = Replacement Insp = Inspection

- Check the pressure and temperature of the hydraulic fl uid and carry out routine opera-tions. Adjust valves etc. if necessary.

- Check the hydraulic fl uid; see the Section headed "Oil".

- Check that no dirt or other contaminations enter the system during inspection.Check that the outside of the hydraulic motor in an in stal la tion is kept free of dirt; thus leakage and faults will be detected earlier.

- We recommend that a running log be kept and that planned inspections are carried out at set intervals.

- Maintenance checks and operations are as follows:

Maintenance chart

Maintenance Installation and Maintenance Manual, Compact CB

A not run-in mo tor in combination with dirt particles in the oil can badly affect the sliding surfaces in the motor. This is valid du r i ng the fi rst 100 working hours.

In operation Oil fi lters

Oil Torque arm

After the fi rst 100 hours

Rpl. Insp.

After 3 months or 500 hours Rpl.

Once every 6 months

Rpl. Insp. Insp.

Once every 12 months

31

MotorIf the motor is to be stored stationary for a longer period than about 1 month, it must be protected from internal rust. This can be done as follows:

1. Mix anti-rust additive with the hydraulic fl uid of the system. Use 5% of Rust Veto Concentrate (manufactured by E F Houghton & Co, Philadelphia, USA). This additive gives rust protection for up to about 1 year, after which time the motor must be turned a few revolutions.

2. If no additives are used, the motor must be regularly turned a few revolutions.

3. If it is not possible to turn the motor, plug all connections, open drain outlet D1 or D2

on the port end housing (or if the motor is mounted vertically, Flushing connection F1 on the shaft end housing) and fi ll the mo tor with hydraulic fl uid.(See Fig. 4.3 and Fig. 4.3a).

Fig. 4.3

Maintenance Installation and Maintenance Manual, Compact CB

Fig. 4.3a

Oxidation

Hydraulic oil oxidizes with time of use and tem pe ra tu re. This is indicated by changes in colour and smell, increased acidity or the for ma tion of sludge in the tank. The rate of ox i da tion increases rapidly at surface tempe ratu res above 60°C (140°F), and the oil should then be checked more often.

The oxidation process increases the acidity of the fl uid; the acidity is stated in terms of the "neutralisation number". Typical ox i da tion is slow initially and increases rapidly later.

A sharp increase (by a factor of 2 and 3) in the neutralisation number between inspections is a signal that the oil has oxidized too much and should be replaced immediately.

Viscosity

Many hydraulic oils become thinner with increasing use, and this means poorer lubrication. The viscosity of the oil in service must never fall below the mi ni mum recom-mended viscosity.

Filters must be changed after the fi rst 100 working hours and the second change is to be carried out after 3 months or 500 working hours whichever is earlier. They must then be changed at regular intervals of 6 months or 4000 working hours.

Oil (Se also 2.3)

Analysis

It is recommended that the oil should be analy sed every 6 months. The analysis should cover viscosity, oxidation, water content, additives and contamination.

Most oil suppliers are equipped to ana ly se the state of the oil and to recommend appropriate action. The oil must be replaced immediately if the analysis shows that it is exhausted.

Filters

32

Installation and Maintenance Manual, Compact CB Maintenance

Water content

Contamination of the oil by water can be detected by samp ling from the bottom of the tank. Most hy drau lic oils repel the water, which then collects at the bottom of the tank. This water must be drained off at regular intervals. Certain types of trans mis sion oils and engine oils emulsify the water; this can be detected by coatings on fi lter cartridges or a change in the colour of the oil. Obtain the advice of your oil supplier in such cases.

All hydraulic fl uids are affected differently. Obtain the advice of your oil supplier or by nearest Hägglunds representative.

Degree of contamination

Heavy contamination of the oil causes increased wear of the hydraulic system components. The cause of the con tami na tion must be immediately investigated and re-medied.

4.5 Oil inspection

PurposeThe purpose to take an oil sample is to check the condition of the oil. With scheduled oil analysis, wear products can be identifi ed and corrective action can be taken before failure occurs. Oil analysis can indicate when an oil change is required, point out shortcomings in maintenance and keep repair cost to a minimum. Using oil analysis can create a “window of opportunity”, allowing the user to schedule re-fi ttings or overhauls, maintenance or repairs, thus saving money on equipment repairs and downtime.The most used method is to take samples in a special bottle and send it to a fl uid laboratory for an analysis and from the laboratory you get a report, which follow a specifi c international standard.You have to select what analysis the laboratory should take, but the most used analysis are particle count, water content, oxidation and viscosity.

Another method is to install an inline particle counter direct in your hydraulic system which give you the contamination level according to the international rules, the disadvantage with this method is that you only get the contamination level in the oil.

GeneralThe intention is to verify the condition of the oil during operation.The motors should be running at normal operation while the sample is taken.The cleanliness is extremely important during sampling.Always use bottles adapted to oil samples, they can be ordered from any fl uid analysis laboratory.Never try to clean your own bottle if you want a true value of the result.The sample should be taken by using a mini-mess hose connected to a mini-mess coupling.Always clean the connections carefully before you connect the mini-mess hose to the coupling.Be careful when connecting the mini-mess hose because the oil beam can be dangerous and should never point against any person or other sensible object. Check and be aware of the pressure you mayhave on the connection before you connect.

How to do

Bottle samplesThe sample shall be taken at the mini-mess coupling on the charge pressure side of the motor in the closed loop system. Never out of the tank using the ball valves.Clean the coupling and the hose carefully.Connect the mini-mess hose to the coupling but be careful and be aware of the direction of the oil beam.Let minimum 2 litres (0,6 gallon US) of oil fl ush into a bucket before you fi ll the bottle.Remove the cap of the bottle as late as possible and don’t let any contamination be in touch with the cap, bottle or the mini-mess hose when the sample is taken. In dirty air area, use a soft plastic foil (normal as protection in laboratory bottles between bottle and cap).

33

Fault fi nding Installation and Maintenance Manual, Compac CB

5. FAULT FINDING

Do not remove the foil, prick the end of your mini-mess hose through the foil into the bottle and fi ll.To get a reliable result the system must run without moving any valves and the mini-mess hose should not touch the bottle. Only ¾ of the bottle shall be fi lled because the laboratory has to shake the sample to get a mixed fl uid when they analyse it. Minimum 200ml are needed for a good analysis.When the bottled is fi lled close the cap as soon as possible to prevent contamination from the air that might enter the bottle and give you a wrong result.

Inline measureThe sample shall be taken at the mini-mess coupling on the charge pressure side of the motor in of the closed loop system. Clean the coupling and the hose carefully.Connect the hoses according to the particle counters manual.To get a true value the contamination readings have to be stable about 10 min before you stop to measure.

Hydraulic motor

Fault Probable cause Action

The motor does not run. Mechanical stop in the drive.

The motor does not deliver enough torque because the pres-sure difference across the motor is not great enough for the load.

Insuffi cient or no oil being sup-plied to motor.

Check system pressure. If the pres-sure has risen to the relief valve set-ting, remove the load from the drive.

Investigate the pressure level in the system and correct the setting of the pressure limiting valve if necessary.

Check the hydraulic system. Check the external leakage of the motor. (The D connection).

Motor rotates in wrong direction.

Oil supply connections to motor incorrectly connected.

Connect the oil supply correctly.

Motor runs jerkily. Pressure or fl ow fl uctuations in the hydraulic system.

Find the cause in the system or in the driven unit.

Noise in the motor. The motor is being operated with the charge pressure too low.

Internal faults in the motor.

Adjust the charge pressure to the cor-rect level. See 2.1 "Recommended charge pressures".

Investigate the drain oil, if necessary. Put a magnetic plug in the oil fl ow and check the material that sticks to the magnet. Steel particles indicate damage. Note that fi ne material from the castings may be desposited and does not mean internal damage in the motor.

External oil leakage on the motor.

The radial lip seal is worn. Replace the radial lip seal.

34

DECLARATION OF CONFORMITY

Deklaration of conformity Installation and Maintenance Manual, Compact CB

The DECLARATION OF CONFORMITY above, is available on request for deliveries from Hägglunds Drives AB. Translations into other languages are also available.

Example of the Declaration of Conformity given by Hägglunds Drives AB

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