...

SERVICE MANUAL 5495

NA-15 SWITCH MACHINE

CONTENTS

DESCRIPTION AND OPERATION •••.

General Description ..•.•

Switch Operation Mechanism

. . . . . . . . . . .

Manual Operation ••••••••........•.

Operation by Trailing ...•...........

INSTALLATION AND MAINTENANCE ..••..

Installation •..•.•...••

Toggle Spring Adjustment ....

2

2

2

2

6

7

7

7

Operating Rod Stroke Adjustment ....••...• 10

Hand-Throw Shaft Alignment.

Crank Shaft Adjustment.

Valves and Magnets •

Conversion ...•.

Lubrication ..•..•••

10

10

10

11

12

Hand Throw Lever Inspection •.......•..• 13

Inspect Complete Locking Arrangement •..•.... 14

Retrofit With New Locking Arrangement .•...•• 15

September, 1982 (Rev. 4188) D-4188-25-2370-3

PIUN fEO IN UV. COl'YIIIGHT , ... UU\ DIVl'llON Of AMERICAN \TANOAIID INC.

·"

SERVICE MANUAL 5495

NA-15 SWITCH MACHINE

CONTENTS

DESCRIPTION AND OPERATION ... . . . . . General Description .... .

Switch Operation Mechanism. . . . . . . .

2

2

2 Manual Operation. . . • . . • . . • . • . . . . .. 2

Operation by Trailing. . . . . . • . . . . . . . . 6

INSTALLATION AND MAINTENANCE . . . . . . 7

Installation . . . . . . . . Toggle Spring Adjustment . . . . . . . . . .

7

7 Operating Rod Stroke Adjustment .•........ 10

Hand-Throw Shaft Alignment. . . . . Crank Shaft Adjustment.

Valves and Magnets.

Conversion •.... . . . . . . . . . . . . . . . . . . . . . . . . . .

Lubrication •.••....

10

10

10

11

12 Hand Throw Lever Inspection. . . . . ... 13

Inspect Complete Locking Arrangement ........ 14

Retrofit With New Locking Arrangement .....•. 15

September, 1982 (Rev. 4188) D-4188-25·2370·3

PRINrEO IN USA CQl'YIIGttT 1•. UY\ DI\II~ Of AMflllCAN UANOAN) INC.

ffi UNION SWITCH & SIGNAL

DESCRIPTION AND OPERATION

GENERAL DESCRIPTION

The NA-15 Switch Machine is essentially an electro-pneumatic direct action machine equipped with a toggle spring and dual-control facilities. Used with the Style U-5 switch circuit controller, the NA-15 is designed especially for installa­tion in yards. The spring-loaded toggle action permits trailing of the switch without damage, yet holds the switch closed in either the normal or reverse posi­tion with sufficient force to permit facing-point moves at normal yard speeds.

The NA-15 Switch Machine may be applied to either right-hand or left-hand layouts, the changeover being easily accomplished in the field. Typical applica­tion is shown in Fig. 4, and method of converting to opposite-hand layout is des­cribed on page 11.

The NA-15 Switch Machine is available with a 6 11 dianeter cylinder for use with 65 to 110 psi air pressure. The valve magnets usually furnished are 400 ohm type for operation with nominal 14 volts d-c., but magnets for other voltage are available (as used in CP valves). For detailed description of valve and magnets see US&S Instruction Pamphlet U-5410.

SWITCH OPERATING MECHANISM

The air cylinder E (Fig. 1), controlled by the poppet type valve F and asso­ciated Style U-5 switch circuit controller, drives the operating rod G through a 5-5/8" stroke, at the same time rotating the crankshaft H through 90°. During the first half of the switch operating stroke, the toggle spring J is compressed and the toggle mechanism is rotated to d~ad-center. As the cylinder stroke continues, the toggle mechanism is driven past center, whereupon the spring force assists the compressed air in completing the stroke. Since the holding force of the spring is equal to that used at spring switches, the air is cut off at the end of the stroke, thus affording appreciable savings in compressed air requirements. Air is required only while throwing the switch by power.

MANUAL OPERATION

A hand-throw lever is provided to permit a trainman to throw the switch manually. Removal of the padlock from the air shut-off valve latch and subsequent foot depressions of this latch will unlatch the hand-throw lever and also exhaust the air from cylinder and valve and shut off air supply preventing application of air to the cylinder. If desired, cut-off contacts K are also provided as an optional feature. These contacts will interrupt the magnet circuit upon opening of the shut­off valve latch. A test clip is also provided to enable the valve magnet circuit to be opened whenever it is desired to operate the valve magnets manually. An ex­ternal interlocking lever L prevents accidental closure of the latch while the hand­throw lever is out of the lever stand. When the hand-throw lever is removed from

5495, p. 2

L

F

\ \

J '

UNION SWITCH a SIGNAL ffi

r-----G

x R E

Fig. 1 .•• Cutaway view of NA-15 Electro-Pneumatic Switch Machine

the stand, the cam surface N on the lever hub forces the interlocking lever in a clockwise direction to the position shown in Fig. 2b.

The hand-throw lever rotates the crank shaft through bevel gears. Use of a disengagement collar on the hand-throw shaft permits the machine to complete its stroke after the toggle spring goes over deadcenter, without reaction on the hand­throw lever. The hand-throw lever does not move during power operation of the sV{itch, although the hand-throw shaft does rotate.

Fig. 3 illustrates the disengagement feature of the hand-throw lever. With the hand-throw lever in the latch stand, the stud D in the lever hub is positioned in the rear track of hand-throw shaft collar P. Fig. 3a shows the stud in this position and the hand-throw shaft in the position that corresponds with the switch operating rod in its "out" posit_ion. (Near switch point open). During operation of the hand­throw lever from Fig. 3a to 3b, lever stud D engages the collar P, rotating the

5495, p. 3

UNION SWITCH a SIGNAL

hand-throw shaft clockwise. At slightly beyond mid-stroke however, the toggle action becomes effective in completing the switch stroke. Through the crank and bevel gear arrangement, the hand-throw shaft is thereby rotated through the re­mainder of the stroke by spring force with no reaction on the lever. It should be noted thatwhile the leverstud Dis stillin the reartrack of the collar P, (Fig. 3b),

• M

EXHAUST

c.,~~

L INTEIILOCKINII

LEVEii

N

(a)

(b)

AIII SUPPLY M

Fig. 2 .•• Manual Operation of NA-15 Switch Machine

(Refer to Figure 8 For Retrofit Information)

K

K

the hand-throw lever can be returned to the latch stand without further operating the hand-throw shaft. However, continuation of the lever stroke (clockwise) from the position shown in Fig. 3b engages cam A on the lever hub with stud O, forcing the hand-throw lever out into the position shown in Fig. 3c. Now stud Dis in the front track of the shaft collar and in a position to rotate the hand-throw shaft when the lever is returned to the latch stand. The clockwise stroke of the lever is limited by the engagement of the flat surface of cam A with stud D. (Fig. 3c).

In returning the hand-throw lever to the latch stand, the operation is similar to the clockwise stroke in that again at slightly beyond mid-stroke the toggle spring, through its action on the crank. shaft, completes the motion of the switch point& and the rotation of the lever shaft. As the hand-throw lever is returned to the latch stand, cam B on the lever hub engages with stud D (Fig. 3d) forcing the lever back into its original position on the shaft, (with stud D in the rear track of the shaft collar), Fig. 3a.

The hand throw lever must be in it's latch, with the foot pedal closed, during trailing operation (see page 6).

5495, p. 4

UNION SWITCH a SIGNAL e::13

A

D

In Position - Stud Din rear~T __ r_a_c_k __ ~(a.)=-i-~<n=) ______________ o t· (d.) (C.)

D

Out Position - Stud Din front Track

Fig. 3 ••• Disengagement feature of the hand-throw lever

5495, p. 5

UNION SWITCH a SIGNAL

OPERATION BY TRAILING

Trailing a switch equipped with the NA-15 machine merely reverses the mechanism without damage. In doing so. the toggle spring is driven over dead­center by the crank, and the piston is shifted to the opposite end of the cylinder by direct action. Depending upon the control scheme used, air may or may not be admitted to the cylinder. Regardless of whether air is admitted, the toggle spring force at first opposes initial shift of the switch points, the same as at an ordinary spring switch, but unlike action at the latter the force required to throw the switch decreases as the switch points approach mid-stroke. During the last half of the stroke the toggle spring assists the shift.

In most installations the control is arranged to apply air to the cylinder when­ever the switch points are opened more than 1 /2 ". This control is completely local when the detector track circuit is occupied, and is through a two-position cam contact in the associated U -5 controller adjusted to shift when the switch reaches mid-stroke. With such control, when approaching trailing traffic begins to shift the switch points, some air may be admitted in the direction tending to oppose the shift as soon as the points have moved about 1 /2 ", but as soon as the points are driven past mid-stroke the valve reverses so that the air will assist in completion of the stroke (until cut-off occurs).

CAUTION

To avoid personal injury or damage to the machine, the hand throw lever must be in it's latch, with the foot pedal closed, during trailing operation.

5495, p. 6

INSTALLATION AND MAINTENANCE

INSTALLATION

UNION SWITCH & SIGNAL m

Typical applicationof the NA-15 Switch Machine is shown in Fig. 4, but detail mounting plans approved by the railroad should be followed when installing the machine. Switch machines are assembled at the factory to suit particular layouts when sufficient information is provided in the order, but in any case they can be changed from right-hand to left-hand or vice versa in the field. Procedure for converting movements to suit conditions other than those for which they are fur­nished are given under "Conversion"on page 11. When the movement is connected to the switch, the switch basket adjusting nuts are to be adjusted to provide a 5-5/8" operating rod stroke as explained in "Operating Rod Stroke Adjustment"on page 10.

;,7,.. ... ·V ~~---,,---'a--=--=-"<!·!i§io~ • ...._µ.~~-=-=.,.._iit;::::;:i. L__ _________ --------·

0

i __ ·--==-· --~~-=·--a=--_:e• _._ .. ss:·•.*_1.~_:._• _111111_ __ ID----~

Fig. 4 ••. Typical application of the NA-15 Switch Machine

TOGGLE SPRING ADJUSTMENT

The toggle spring retainer Q (Figs. 1 and 5) is factory adjusted to provide a length of 20-13/32" between the center line of the fulcrum shaft R and the center line of the crank pin S when the switch machine is not connected to the switch. (It should be noted that when the toggle spring retainer is adjusted to this length and

5495, p. 7

UNION SWITCH & SIGNAL

v

w R

T R y· ;.--6""" __ ..,

R w

v Q w

T s

R T

Fig. 5 • • . Toggle Spring adjustment

5495, p. 8

UNION SWITCH a SIGNAL m

R v Q W T

R s Fig. Sa • . • Operating rod stroke adjustment

5495, p. 9

m UNION SWITCH & SIGNAL

the switch machine is not connected to the switch, the spring force is self-con­tained, permitting easy removal or application of crank pin S.) This length allows a 6" horizontal stroke of the operating rod pin T. If taken apart during overhaul, care should be taken in reassembly to obtain the 20-13/32" length. The inside of the spring retainer is hexagonal-shaped and turns the spring retainer nut W to vary the length of the spring. When the spring retainer is turned sufficiently to dis­engage the nut from the threads on the rod, the toggle spring will have already reached its free length and will exert no pressure on the spring retainer.

OPERATING ROD STROKE ADJUSTMENT

When the switch machine is connected to the switch, (Fig. Sa), switch basket adjustingnuts are to be adjusted to provide a5-5/8"operating rod stroke when the switch machine is operated by air. A marker index is provided for obtaining the correct switch rod stroke. This adjustment should be made in such a way as to enable the marker quadrant Y on the crank shaft to line up with the slot in the index markeron the gear cover at eachend of the stroke. This is readilydone by adjust­ing the nuts to place the marker disc end opposite the index notch for each end of the stroke independently, as covered by the instructions on the machine cover. By having the slot line up with the marker quadrant, mid-position of the toggle spring will coincide with mid-position of the switch stroke, and the stroke will not be stopped by the piston against the cylinder head, or by the spring retainer against the spring retainer nut. In other words, the switch itself limits the stroke of the machine rather than having any moving part of the machine limit the stroke. The foregoing adjustment should be maintained to insure proper toggle spring force acting to hold the switch closed for facing-point moves.

HAND-THROW SHAFT ALIGNMENT

Shims are placed between the hand lever shaft support X (Fig. I) and the machine housing to provide correct alignment of the hand-throw shaft in its bear­ings. When necessary to disassemble the hand-throw shaft, it is important that the same number of shims be placed at the same location when reassembling to provide correct alignment.

CRANK SHAFT ADJUSTMENT

The crank shaft is positioned by means of shims Z (Fig. I) placed between the rocker shaft bearings and the side of the housing. The ends of the rocker shaft bearings bear against the inner race of the tapered roller bearings U, thereby locating the crank shaft. Shims are first placed in the side of the machine adjacent to the bevel gears to obtain the correct gear mesh of the bevel gears. After the correct gear mesh is obtained, shims are added to the opposite side rocker bear­ing· to obtain proper clamping pressure on the inner races of the tapered bearings to limit crank shaft end play.

VALVE AND MAGNETS

Fordetailedassembly and service procedures forthe valve and magnets, refer to Union Switch & Signal Instruction Pamphlet U-5459.

~495, p. 10

UNION SWITCH & SIGNAL m CONVERSION

The NA-15 Switch Machine is easily changed to opposite-hand assembly in the field. Figure 6 shows the machine assembled to suit a left-hand layout condition. To convert from left-hand to right-hand or vice versa, the following changes are necessary:

1. The circuit controller support plate is installed on the opposite side of the machine. This entails reversing the bolts to the opposite sides of the housing.

2. The cover, its hinges, and the hasp are reassembled on the opposite side.

3. The operating rod sleeve and the spacer on the crank pin are interchanged and the operating rod protecting cover is placed on the opposite side of the center line of the machine.

HASP

COVER

.,.___-J.--/ _,,___ ________ ~

OPERATING ROD PROTECTING COVER

0

0 0

I

CIRCUIT CONTROLLER SUPPORT PLATE

Fig. 6 ••. Conversion of NA-15 Switch Machine to opposite -hand assembly in the field.

5495, p. 11

ffi UNION SWITCH & SIGNAL

A

B

B

0 0 A

Fig. 7 ••• Lubrication of NA-15 Switch Machine

LUBRICATION

The design of the NA-15 Switch Machine provides for convenient access to lubrication fittings. To insure best results the machine should be lubricated at regularly scheduled intervals with high grade lubricants.

Before leaving the factory, the mechanisms are lubricated for the protection of bearing surfaces during shipment or for a limited storage period. Threaded surfaces are coated with grease to preserve the surfaces and insure free-turning nuts.

The lubrication drawing (Fig. 7) is included in these instructions to facilitate proper lubrication procedures. The recommended lubricants can be purchased from Union Switch & Signal in convenient quantities.

Referring to Fig. 7, grease fittings A should be lubricated by pressure gun with W.A.B. Brake Cylinder Lubricants, Spec. M-7651-2; fittings B should be lubricated with U.S. & S. pressure gun grease, Spec. M-7650-01. Forlubricant specifications, see Catalog Plate P8000, Refs. H and G respectively. Medium grade engine oil should be applied to the oil holes C. Shut-off valve D should be lubricated with Cock Grease, Spec! No. M-7675-4.

:195, p. 12

UNION SWITCH & SIGNAL ffi Hand-Throw Lever Inspection

As stated on page 3, the hand-throw lever does not move during power operation of the switch, although the hand-throw shaft does rotate. In addition, the hand-throw lever should not move during a trailing operation of the switch. However, a yearly check of this operat­tion is recommended to insure that no galling or excessive wear has occurred which might cause binding between the hand-throw lever and its shaft.

This annual check should be done as follows:

1. Remove power from valve magnets.

2. With near point closed, pry it open about 1-1/2" and check that the point is returned to its fully closed position by the toggle spring.

3. Repeat same test with far point closed.

4. If switch does not return, renove the hand-throw lever.

WARNING Make sure that power is off the valve magnets and also that the open latch stand is blocked to prevent reclosing when hand-throw lever is removed, otherwise personal injury may result.

5. Exaraine the round end of the hand-throw lever stud D for gal­ling or worn flat surfaces. If galling or flat surfaces over 1/16" wide have occurred, the stud should be replaced. The sides of the shaft collar earn surfaces should be checked for smoothness. If galling has occurred, the shaft should be replaced or repaired.

WARNING

A possible product part tolerance build-up in the air shut-off valve, interlocking lever, and hand-throw lever of NA-15 switch machines furnished prior to !larch, 1982 nay result in a potential hazard. Injury may result if personnel operating the hand throw lever do not observe standard safety rules relative to the operation of switches with switch levers. Hake locking arrangement inspection and retrofit procedures as follows:

5495, p. 13

m UNION SWITCH & SIGNAL

Inspect Complete Locking Arrangement

When the NA-15 Switch Machine is to be manually operated, (Refer to Figures 1 and 2) the air is shut off to the machine by stepping on and opening the lever latch/air shut-off valve, item M. When the hand-throw lever, item N, is removed from the lever latch, item M, the interlocking lever, item L, rotates clockwise on the lever stud, item L-1, to mechanically lock the lever latch/air shut-off valve, item M, in the open position, not allowing the air to be supplied to the valve and cylinder, item E. The lever latch/air shut-off valve, item M, is locked open via the interlocking lever, item L, until the hand-throw lever, item N, is returned to the lever latch/shut-off valve, item M.

To check and/or insure that the complete locking arrangement is working properly, perform the following procedure:

1) Shut off the air to the NA-15 Switch Machine at the nearest air cock in the air distribution line.

2) Unlock the lever latch/air shut-off valve, item M, and fully open the lever latch.

3) Lift the hand-throw lever, item N, and rotate 180° to the opposite horizontal position.

4) Push the interlocking lever, item L, firmly against the cam surface on the hand-throw lever, item N.

5) Measure the distance between the bottom of the foot pedal on the lever latch/air shut-off valve, item M, and the top surface of the interlocking lever, item L.

6) If the clearance measured in the previous step is less than 1/64 inch, return the hand-throw lever, item N, to the lever latch/air shut-off valve, item M, close the foot pedal and open the air cock in the air distribution line to put the machine back in service.

7) If the clearance measured is greater than 1/64 inch, replace the existing interlocking lever, item L, and lever stud, item L-1, with a direct retrofit interlock­ing lever assembly, by ordering N318503-002.

5495, p. 14

UNION SWITCH a SIGNAL ~

Retrofit With New Interlocking Arrangement (Refer to Figure 8)

To retrofit the NA-15 Switch Machine with the new interlocking arrangement N318503-002, perform the following procedure:

A) Shut off the air to the NA-15 Switch Machine at the nearest air cock in the air distribution line.

B) Unlock the lever latch/air shut-off valve, item M, and fully open the lever latch.

C) Lift the hand-throw lever, item N, and rotate 180° to the opposite horizontal position.

D) Loosen and remove the lever stud, item L-1, and then remove the interlocking lever, item L.

E) Discard all items removed in the previous step, step D.

F) Place the new interlocking lever, M318503, in a position similar to the old lever.

G) Insert new lever stud, item L-1, through interlocking lever, item L, and through appropriate hole in side of housing, and apply lock washer and hex nut.

H) Tighten slotted hex nut securely until the lock washer is completely compressed.

I) Align closest slot in hex nut, with the hole in the lever stud, item L-1.

J) Insert cotter pin in hole of lever stud, item L-1, and spread ends apart.

K) Insert set screw (J050719) in threaded hole in the inter­locking lever, item L, hex slot down, under the lever latch and air shut-off valve, item !·1.

L) Thread jam nut (J048016) on set screw beneath the interlocking lever, item L. Do not tighten.

M) Properly adjust the new interlocking arrangement per the following procedure:

a) Check to insure the lever latch/air shut-off valve, item M, is fully opened.

b) With the hand-throw lever, item N, in the unlatched position (180° away from the lever latch/air shut­off valve, item M), adjust the set screw in the interlocking lever, item L.

5495, p. 15

ffi UNION SWITCH & SIGNAL

(i) Push the interlocking lever, item L, firmly against the CaI!l. surface on the hand-throw lever, item N.

(ii) Tread the set screw accordingly in or out, to have 1/64 inch or less between the end of the set screw and the bottom of the lever latch on the lever latch/air shut-off valve, item M.

(c) Hold the set screw in position and tighten the jam nut to jam against the interlocking lever, item L.

(d) Recheck clearance procedure as in step (b).

(e) Replace the hand-tnrow lever, item N, back in the lever latch/air shut-off valve, item M, and close the latch.

(f) Check to insure the interlocking lever, item L, does not bind.

(g) Open the air cock in the air distribution line to put the machine back in service.

EXHAUST

TO CYLINDER

Set

AIR SUPPLY

Set Screw

N

(a)

(b)

L Set Screw

L-­Set Screw

Figure 8, NA-15 Switch Machine with New Interlocking Arrangement

5495, p. 16

K

K

ITEM NO.

2 2 3 3 4 4 5 6 7 8 9

10 11 12 13 14 15 16

16a 16b 17 18

18a 19 20 21 22 23 23a

UNION SWITCH & SIGNAL m PARTS LIST

NA-15 ELECTRO-PNEUMATIC TOGGLE SWITCH MACHINE (See Figure A-1)

Part No. Description

N303707 R.H. N303708 L.H. N310722 R.H. N314713 R.H.

DESCRIPTION

Housing (see also Item 113) Housing cover cover 6• Cylinder and Valve 6• cylinder and Valve Gear Cover

Dual Control Dual Control Without Hand Dual Control

Throw

crankshaft (Includes Refs. 7 to 17 inclusive) crankshaft Shaft Bushing, 1-3/8 • Bushing, 1-11/32• Bushing Tapered Roller Bearing Packing, 3.189 o.o. x 3/8• w. segment Gear Lubricating Fitting. Set Screw, 3/8•-16 x 1-112• sq. Hd. I.

(Cad. Pl.) 3/8• Plains. Lock washer Hex. Nut, 3/8• (Cad. Pl.) Key Hand Throw Shaft

(Includes Ref. 18a to 25 inclusive) Shaft Hand Throw Bearing Bearing Seat Pinion Gear Key Ball Bearing Retaining Ring

Ref.

A B c D

PART NUMBER

R296920 R314710 R296860 N323893 N303676 N346832 R297033 N296615 N296602 M296745 M296314 M297297 J790337 J066265 J067095 J792937 J039137

J050578 J47 5121-0113 J048009 M296666

N297221 N296919 N296864 M296780 M296608 M297220 J066264 J790334

USED ON REF.

A,B D A,B,C D A,B C,D A,B,D A,B,D ALL ALL ALL ALL ALL ALL ALL A,B,D ALL

A,B,D A,B,D A,B,D A,B,D

A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D

5495, P• 17

m UNION SWITCH & SIGNAL

ITEM NO.

24 24a 25 25a 25b 27 28 29 29 30 31

3la 3lb 32

32a 33 34 35 36 37 38 38a 39

40 41 42 43 44 45 46 47 48 49 50 50a 51

5la 52 53 53a 54 55 56 57

DESCRIPTION

Lock Nut Lock washer set Screw, 5/16•-10 x 1• Sq. Hd. cup Pt. 5/16• Plains. Lock washer 5/16•-10 Hex. Jam Nut Rocker Shaft Rocker Shaft Bearing Baffle Plate Baffle Plate Marker Spring Retainer with Spring Retainer

Ref. 3la and two Bearings Ref. 3lb Spring Retainer Bearing complete with Snap Ring Spring Retainer Rod with Spring Retainer

Rod Ref. 32a and Bushing Ref. 33 Spring Retainer Rod Only Bushing Spring Retainer cap Toggle Spring Hand Throw Lever Bushing set Screw 1/2-13 x 1-112• Nut, Jam 1;2•-13 Hand Throw Lever Latch and Air Shut-Off

(Includes Ref. 40 to 52 inclusive) Lever Lock Lever Stand Body Valve Valve Cock (Not Shown) Drive Shaft Bushing Spring Gasket Retaining Plate ventilator Screen (Not Shown) Tap Bolt, 112•-13 x 3• Hex. Hd. s. (Cad. Pl.) Lock washer, 1;2• Plains. (Cad. Pl.) Machine Screw, l/4•-20 x 1-1/4• Rd. Hd. s.

(Cad. Pl.) Lock washer, 1/4• Plains. (Cad. Pl.) Pipe Plug, s. Test Clip Terminal Block Terminal Block with Moulded in Binding Posts Test Clip washer, 17/64 x 9/16• Nut Binding Nut, 114-24

5495, p. 18

PART NUMBER

J048573 J047786 J050706 J047526 J048007 M300711 R296914 M297225 M315965 N298913

N296534 M296533 J066266

Nl90375 Nl90361 Ml90392 M296530 J068977 R296939 M289601 J050719 Jl48016

N318612 M318611 M318610 M318554 M318466 N318469 M318464 J068302 M318402 M318467 Mll9951 J050104 J047783

J052667 J047775 J032900 N323787 N206754 J700846 J047818 J480300 J480301

USED ON REF.

A,B,D A,B,D A,B,D A,B,D A,B,D

ALL A,B,C D ALL

ALL ALL ALL

ALL ALL ALL ALL ALL A,B,D A,B,D A,B,D A,B,D

A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D

A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D

..

ITEM NO.

58 59 60 61 62 63 63a 63b 63c 64 65 66 67 67 68 68a 69 70 71 71 71 71a 71b 7lc 72 72 73 74 74 75 76 77 78 79 80 81 82 83

83a

84 85 86

DESCRIPTION

Interlocking Lever Lever Shift Cam Support Crank Pin Shaft cover Lever Stud Lock Washer, 3/4• Plains. (Cad. Pl.) Nut, 3/4• Hex. (Cad. Pl.) cotter Pin, 5/32 x 1-3/4• Pipe Nipple, 3/8 x 4• Nut tl4-24 Valve Cover cover Cover 112• Male and Female Union Restricting washer Hose connection Clamp Plate Hinge Bolt, 1;2• (Drilled) Hinge Bolt, Eccentric Hasp Bolt, 1/2-13 x 1-1/2, Soc. Rd. Lock washer, 1;2• Plains. (Cad. Pl.) Nut, 1/2• Hex. Slotted (Cad. Pl.) cotter, Pin, 1/8• x 1• s. (Tin Pl.) Cap Hinge Half Hinge Half Hinge Hasp Hasp/Hinge Stud washer Spacer Spacer Spacer Spacer Spring Retainer Nut Shim Circuit controller Support (25-1/2• Long x

11-112• wide) Circuit controller Support (25-1/2• Long x

10-5/a• wide) washer Shim washer Plate

UNION SWITCH & SIGNAL ffi

PART NUMBER

R318503 N296916 M296572 M296531 M296532 M296913-001 J047772 J048091 J486000 J328339 J480300 M296922 N297304 N314706 J033596 M299078 J075230 M296858 M296953 M323894 J050223 J047783 J048090 J048620 M451183-0201 M323877 M296813 M296822 N323920 Ml92069 M296949 M322605 M322606 M322607 M322608 Ml91309 M296978

M296868

M297481 M025055 M298928 M300117

USED ON REF.

A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D A,B,D ALL A,B,C D c c A,B,D ALL A,B,C D D A,B,C A,B,C A,B,C A,B,C D A,B,C A,B,C D A,B.D ALL ALL ALL ALL ALL ALL ALL

ALL

ALL ALL A,B,D ALL

5495, p. 19

m UNION SWITCH & SIGNAL

ITEM NO.

87 88 89

89a 89b 90 91 9la 92 92a 93 93a 94 94a 95 95a 96

96a 96b 96c 97

97a 97b 97c 98

98a 99 99a 99b

100

lOOa 101

lOla 102 103 104 105 106

106a 107

108

DESCRIPTION

Name Plate Rivet Machine Screw, 110-32 x 1;2• Fil. Hd. s.,

(Tin Pl.) Lock washer, 110, Plains. (Tin Pl.) washer, Plate, 3/16• s. Plate (Tin Pl.) 1/2• Ell Machine Screw, l/4•-20 x 7/8• (Tin Pl.) Lock washer, 1/4•, Plains. (Tin Pl.) cap Screw, 1;4•-20 x 112• (Tin Pl.) Lock washer, 1/4•, Plains. (Tin Pl.) cap Screw, l/4•-20 x 3/4• (Tin Pl.) Nut, 1/4•, Hex. (Tin Pl.) cap Screw, 5/16 x 5/8• Hex. Hd. s. (Cad. Pl.) Lock washer, 5/16•, Plains. (Cad. Pl.) Cap Screw, 5/16-18 x 3/4• (Cad. Pl.) Lock washer, 5/16•, Plains. (Cad. Pl.) Cap Screw, 3/8-16 x 1-112•, Hex. Hd. s.

(Cad. Pl.) washer, Plate, 3/8• Std. s. (Cad. Pl.) Lock washer, 3/B•, Plains. (Cad. Pl.) Nut, 3/B•, Hex. (Cad. Pl.) cap Screw, 3/8-16 x 1-1/4• Hex. Hd. s.

(Cad. Pl.) washer, Plate, 3/8•, Std. s. (Cad. Pl.) Lock washer, 3/8•, Plains. (Cad. Pl.) Nut, 3/8•, Hex. (Cad. Pl.) Cap Screw, 1;2•-13 x 112• Hex. Hd. s.

(Cad. Pl.) Lock washer, 1/2•, Plains. (Cad. Pl.) Tap Bolt, 112•-13 x 1• Hex. Hd. s. (Cad. Pl.) Lock washer, l/2•, Plains. (Cad. Pl.) Nut, 112•, Hex. (Cad. Pl.) Tap Bolt, 1;2•-13 x 1-112•, Hex. Hd. s.

(Cad. Pl.) Lock washer, 112•, Plains. (Cad. Pl.) Tap Bolt, l/2•-13 x 1-1/4• Hex. Hd. s.

(Cad. Pl.) Lock washer, 112•, Plains. (Cad. Pl.) 1• Plains. Lock washer (Cad. Pl.) Pipe Reducing Bushing, 3/8• x 112• (Galv.) Steel Cotter, 1/4• x 2-1;4• (Tin Pl.) 1;a• Lubricating Fitting Tap Bolt, 1;2•-13 x 1-1/4• Hex. Hd. s.

(Cad. Pl.) Lock washer, 1;2•, Plains. (Cad. Pl.) 3/8• Straight Adapter Union

or 3/8• Ell 3/8•, 900 Angled Adapter Union

5495, p. 20

USED ON PART NUMBER REF.

M437733 J049822

J052355 J047733 J047500 J032481 J052202 J047775 J050012 J047775 J050016 J048002 J050035 J047526 J050036 J047526

J050056 J047502 J475121-0113 J048009

JOS0056 J047502 J475121-0ll3 J048009 J050235

J047783 J050088 J047783 J048013

J050092 J047783

J050090 J047783 J047823 J032024 J048646 J039137 J050090

J047783 J335007 J032453 J335008

ALL ALL

ALL ALL ALL ALL A,B,D A,B,D ALL ALL ALL ALL ALL ALL ALL ALL

ALL ALL ALL ALL

ALL ALL ALL ALL ALL

ALL c c c

ALL ALL

ALL ALL A,B,D A,B,D ALL ALL A,B,D

A,B,D A,B,D A,B,D A,B,D

..

ITEM NO.

109 109a 110

llOa 111

llla 112

*113 *114 *115

*116

*117 *118 *119 *119a *120 *121

*12la *122

*122a *122b *123

*122a *123b

DESCRIPTION

Machine Bolt, l/2•-13 x 4-1/2• Hex. Hd. Lock washer, l/2•, Plains. (Cad. Pl.) Tap Bolt, 1;2•-13 x 1-1/2• Hex. Hd.

(Cad. PL) Lock washer, l/2•, Plains. (Cad. Pl.) Tap Bolt, 5/a•-11 x 1-112• Hex. Hd. s.

(Cad. PL) Lock washer, 5/a•, Plains. (Cad. Pl.) Shim washer Housing Index Holder Complete crankshaft Complete (Includes Refs. 7 to

13 inclusive and Ref. 15) cover Plate (For plugging hole for hand

throw shaft) Armored Hose Connection 2• Pipe Nipple coupling 2• Cable Grip 2• Pipe Plug, Csk. c.r. cap Screw, l/4•-20 x 5/16• Hex. Hd. s.

(Tin Pl.) Lock washer, 1/4•, Plains. (Tin Pl.) Tap Bolt, 3/4•-10 x 1-1/2• Hex. Hd. s.

(Cad. PL) Lock washer, 3/4•, Plains. (Cad. Pl.) Nut, 3/4•, Hex. (Cad. Pl.) Cap Screw, 3/8•-16 x 3/4• Hex. Hd. s.

(Cad. Pl.) Lock washer, 3/a•, Plains. (Cad. Pl.) Nut, 3/a•, Hex. (Cad. Pl.)

* Note: For N.A. - 15 Switch Machine with­out Hand Throw Lever per View x.

UNION SWITCH & SIGNAL m PART NUMBER

J500025 J047783

J050092 J047783

J050112 J047822 M312739 R320258 N310719

N310720

M310716 J075221 J328351 J321083 J712096 J032956

J050156 J047775

J050126 J047772 J048026

J050051 J4 75121-0113 J048009

USED ON REF.

A,B,D A,B,D

A,B,D A,B,D

A,B,D A,B,D A,B,D c c

c

c c c c c c

c c

c c c

c c c

5495, p. 21

83

37

75 102 SECTION "z-z

t<:57

56

55 54

" ,, y

58

74

85

" .. SECTION Y-Y

I 112 94 111 66

107 69 93 67 28 27 77 78 34 98 68---

79 4

---...... ... - 70 '18 it!1 . -•

//ltl\ 94 21 82 100 28 86 13 101

\ :~5 1f ~o_. 88 101

\ '• \I.~ h. ~·i~~~\~" ~ ~ t1!11;:±~;\ \. \. \. ~~ {~~ ~---...

I \ \ I 20 22 25 24 16

115 6 12

2

94

UNION SWITCH & SIGNAL ffi

v1r.w·x·

I 120

Figure A-1. NA-15 Assembly Pa·rts Location 5495, p. A-23/24

~::.-,~.

..