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TRACTOR MANUAL
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Table of Contents LIST OF FIGURES ............................................................................................................................................ 3
Overview ....................................................................................................................................................... 5
Knowledge of an Employee ...................................................................................................................... 5
Skills of an Employee ................................................................................................................................ 5
OH&S Regulations ......................................................................................................................................... 6
Introduction .................................................................................................................................................. 7
Rigid Frame Tractor ................................................................................................................................... 7
Bi-Directional Tractor ................................................................................................................................ 7
Pre-Trip Inspection ........................................................................................................................................ 8
Approach ................................................................................................................................................... 8
Under the Hood ........................................................................................................................................ 8
Walk Around ............................................................................................................................................. 8
In Cab Checks ............................................................................................................................................ 8
Starting the Engine ........................................................................................................................................ 9
Ether .......................................................................................................................................................... 9
Hydraulics ................................................................................................................................................ 10
Safe Tractor Operation ............................................................................................................................... 10
Power Take-Off Safety (P.T.O.) ................................................................................................................... 11
Park and Shut Down .................................................................................................................................... 12
Procedure for Refueling .......................................................................................................................... 12
The Idle Tractor ....................................................................................................................................... 12
Procedure for Shutting Down ................................................................................................................. 13
Record Keeping ........................................................................................................................................... 13
Card Lock System .................................................................................................................................... 13
Routine Maintenance ................................................................................................................................. 13
Daily Preventative Maintenance ............................................................................................................. 13
Operator equipment check sheet and service record ............................................................................ 14
Attaching and Detaching implements .................................................................................................... 14
Loading Equipment’s ................................................................................................................................... 15
Tie-Downs ............................................................................................................................................... 15
Transporting Heavy Equipment .............................................................................................................. 16
Attachments ................................................................................................................................................ 17
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Mowers ................................................................................................................................................... 17
Snow Blowers .......................................................................................................................................... 18
Rotary Brooms ........................................................................................................................................ 19
Safety Precautions ...................................................................................................................................... 21
Relatable SOP’s ........................................................................................................................................... 21
Appendix A .................................................................................................................................................. 22
WLL for Chain .......................................................................................................................................... 22
WLL for Chain Hooks ............................................................................................................................... 23
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LIST OF FIGURES Figure 1: Rigid-Frame Tractor ....................................................................................................................... 7
Figure 2: Bi-Directional Tractor with Rotatory Broom .................................................................................. 7
Figure 3: 3-Point Contact Entry ................................................................................................................... 10
Figure 4: Power Take-Off (PTO) Shaft ......................................................................................................... 11
Figure 5: Stamped and casted markings on tie downs ............................................................................... 15
Figure 6: Securing Tractor on Trailer........................................................................................................... 16
Figure 7: Mower .......................................................................................................................................... 17
Figure 8: Snow Blower ................................................................................................................................ 18
Figure 9: Rotary Broom Tractor .................................................................................................................. 19
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NOTE TO THE READER
The information in this manual does not include each and every unique solution that you may
encounter while operating or working on the MHI equipment. In the event that a situation is not
addressed in this manual is encountered, contact your supervisor if in doubt before proceeding
Recognizing that some changes on the unit may be made in the future, the information,
specifications and illustrations in this manual are based on information that was current at the
time of publication. Note that some illustrations are typical and may not reflect the exact
scenario in which the employer will be faced.
This publication is intended for MHI internal use only. No part of this publication may be
reproduced, stored in a retrieval system or be transmitted in any form by any means including
(but not limited to) electronic, mechanical, photocopying, recording or otherwise for any other
purpose without the written permission of the MHI.
TRACTOR MANUAL
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Overview As an employer, the Ministry of Highways and Infrastructure (MHI) must ensure adequate training
exists. This manual along with training for new employees and coaching by supervisors will form the
foundation of the Ministry program. The course content and format to deem an operator competent
on a tractor will consist of:
Review of the MHI Tractor Manual,
Review of specific equipment manuals,
Completing tractor E-Learning Module,
Successfully passing tractor LEARN exam, and
A practical evaluation of a pre-shift inspection and proper operation of the unit typically done
with the employee’s supervisor for a minimum of 16 hours. Some employees could take more
than 16 hours to be deemed competent based on prior experience and comfort level with
power mobile equipment.
Occupational Health and Safety (OH&S) Regulations states; an employer or contractor shall ensure that
only trained operators are required or permitted to operate powered mobile equipment (Section 154).
The OH&S definition of a “trained operator” means a worker who has successfully completed a training
program that includes all the elements set in Table 14.1 of the OH&S Regulations.
You as an employee must use the procedures outlined in the manual along with the material presented
during the training to ensure not only your safety, but those co-workers around you.
Knowledge of an Employee After attending training and then being deemed competent on the tractor, employees will be able to do
the following:
Identify hazards associated with the work, including the principles of operations and features of
the unit,
Understand the manufacturer’s specifications related to the operation and safe load handling
for the unit that the worker will be using,
Repeat workplace safety practices and procedures, and
Understand legislation applying to the work.
Skills of an Employee The skills to be learned are:
Pre-operation inspection,
Start-up and shut-down procedures,
General operation including starting, stopping, parking, lifting and operating around personnel,
Safe operating procedures for mower, snow blowers and rotatory brooms.
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OH&S Regulations This manual was based off of best practices, Ministry standards and of course, the Occupational Health & Safety (OH&S) Regulations. If you want to understand the reasoning or the legal obligations between both the employer and employee, we recommend you do further reading of the regulations that can be found at www.publications.gov.sk.ca. The OH&S Regulations are broken into two sections that relate to this manual: • Tractor regulations
o Section 12 – General Duties of Employers o Section 13 – General Duties of Workers o Section 14 – Employment of Young Persons o Section 17 – Supervision of Work o Section 24 – Identifying Mark of Approved Equipment o Section 25 – Maintenance & Repair of Equipment o Section 132 – Designated Signalers o Section 153 – “Hours of Darkness” Means o Section 154 – Trained Operators for Power Mobile Equipment o Section 155 – Visual Inspection o Section 156 – Inspection and Maintenance o Section 157 – Requirements for Powered Mobile Equipment o Section 157.1 – Construction, Repair, etc. of Powered Mobile Equipment o Section 158 – Use of Seat Belt o Section 160 – Warning of Reverse Motion o Section 161 – Roll-Over Protection Structure o Section 164 – Dangerous Movements o Section 165 – Transporting Workers
• Training regulation
o Table 14.1
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Introduction Ministry of highways and Infrastructure have a great variety of uses for tractors, loaders, brooms, mowers, pulling packer and snow blowers. In the event that you are not familiar with the type of unit you are about to operate, always read the equipment specific manual before starting out.
Rigid Frame Tractor This type of tractor can have a variation of transmission system. Some of them are 2 wheeled and have very light front axle which are unable to carry the weight of our heavy rotary brooms and snow blower. This is why extra caution and reduced speeds may be required while making turns
Figure 1: Rigid-Frame Tractor
Bi-Directional Tractor This type of tractor utilizes a hydrostatic drive. As the name implies, the tractor can be moved and operated in both directions. The seat and control console inside the cab swivels around to accommodate the direction of travel for the operator. This unit can have a number of attachments added to it, including rotary brooms, snow blowers, mowers and front end loader buckets. Show in figure 2 is a rotary broom attached to the tractor.
The benefit of this type of tractor is that not only can it be operated in either direction, but also have different attachments added to each end at the same time. Also, the unit is 4-wheel drive and has the weight capacity to carry some of the heavy attachments that are required for our maintenance operations.
Figure 2: Bi-Directional Tractor with Rotatory Broom
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Pre-Trip Inspection As with any other vehicle or piece of equipment, a proper pre-trip inspection must be
completed before beginning to operate for the day. This manual will show you how to care for
your unit by doing proper pre-trip inspection and includes a four step process.
Approach
Inspect the equipment for leaks underneath that may indicate a problem (coolant,
engine oil, transmission fluid or gear oil)
Inspect the unit for any act of vandalism
Ensure the tires are of good pressure and not flat
Under the Hood
Check Engine Oil Level and top up as needed
Check coolant level and top up as needed
Check all belts for proper tension and condition
Check fuel pump sediment bowl and fuel filters; if water is present, remove it
Make sure radiator is clear of obstruction
Check air cleaner and filter gauge
SAFETY NOTE IS TO NEVER START AN ENGINE BEFORE DOING UNDER HOOD
CHECKS.
Walk Around
Check all tires for proper inflation
Inspect for Roll Over Protective Structure (ROPs)
Check that wheel rims/lug nuts are in good condition
Make sure all lights and reflectors are clean and operational
Check unit/attachments for defects
Grease all high wear points daily
In Cab Checks
Adjust the seat, mirrors and steering wheel
Remove/secure all loose objects
Keep glass clean
Proper operation of all switches and gauges
On units with individual wheel brakes, ensure an effective braking and parking device
Be familiar with transmission and controls
Ensure horn and audible back up alarm are functioning
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Starting the Engine Prior to starting a piece of equipment, insure you know how to shit it off. This is very important
in case something goes wrong.
Ensure park brake is engaged
Transmission is out of gear
Power Take Off (PTO) is disengaged
Depress clutch pedal (If applicable)
Start engine and check gauges
Allow ample time for engine to warm up. This is a great opportunity to fill out the pre-
trip documentation
TRACTOR REQUIRES DOCUMENTED PRE-SHIFT INSPECTION BEFORE USE.
REPORT ALL DEFECTS OR UNSAFE CONDITION TO YOUR SUPERVISOR.
Ether This is a volatile liquid that is highly flammable and used as a starting aid for different units,
including the tractor. This liquid is usually used in extremely cold temperature when the
tractor’s engine is having trouble starting; usually when it’s cranking. These are the things you
should know about ether as a starting aid
1. Always use ether in small quantities:
2. Use ether only when engine is cranking; and
3. Never use ether after the engine has fired up.
There are also several kind of pre-heating devices. Some heat the cylinder; others heat the air
entering the intake manifold. Most pre-heating devices get turned on by the key and you need
to wait for the indicator light to go out before attempting to start the engine.
If the engine fails to start, remember that the starter should never be used for more that 10-20
seconds at a time. You should allow the starter to cool down for 1-2 minutes between
attempts. As soon as the engine starts up you have to make sure that all vital functions are in
good working order. The items you need to check are as follows.
Oil Pressure – Make sure the oil pressure gauge or the indicator light registers within a
few seconds after the engine has fired up. If the engine is cold, it may take more time
Alternator – Ensure the voltmeter or the indicator light registers. This will take place
immediately after the engine has fire up.
Backing up alarm – if the backup alarm does not work, the tractor is to be taken out of
service and repaired before using.
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Hydraulics Hydraulic fluids are used to power motors and lifting rams by a pump
Hydraulic tank stores and helps cool fluids
Cleanliness is a must when dealing with hydraulics
Use card board to check for leaks
Ensure all leaks are repaired with caution because hydraulics may be under high pressure
Hydraulic fluid is flammable
Before removing cap, shut down engine and make sure oil is cool
Use funnels with filters and screens
Do not overfill tank
USE ZERO ENERGY WHEN DOING ANY REPAIRS!
Safe Tractor Operation When entering and exiting the tractor, use 3-point contact facing the machine (see related
SOP). Always use a three-point contact as shown in figure 3 to enter or exit the unit in order to
minimize the chance of slips and falls;
Always keeping 3 points in contact with the vehicle;
I. One hand and two feet;
II. Two hands and one foot
Always face the equipment
Do Not Jump from unit
Scan ground for uneven surfaces
Figure 3: 3-Point Contact Entry
It is important for every operator to always have their seatbelts on, there is no exception to
this when operating any MHI unit. When operating a tractor consider the following:
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Never make adjustments to tractor or implement without first shutting down the unit
Never attempt to start the tractor until properly seated and you have reviewed the
operator’s manual to ensure you understand equipment specific controls.
Operate at a controlled speed
Do not operate the tractor on excessively steep grades
Never attempt to climb steep or straight out ditches
Turn down the slope if the tractor becomes unstable
Use proper hitch pins when towing equipment
Don’t warm the tractor engine in a closed building
Heavy loads make braking and steering less responsive
Never take tractor out of gear when going down hill
ROTARY LIGHTS ARE TO BE USED WHEN OPERATING ON OR NEAR PUBLIC
ROADWAYS
Power Take-Off Safety (P.T.O.) The Power Take-Off is a means of using the chassis engine to power accessories, eliminating the
need for an additional auxiliary engine. The PTO shaft on a tractor as show in figure 4 enables
power to be delivered to stationary machine as well as to field machines. Consider the
following when using the PTO;
Always disengage the PTO, shut off the engine and pull the keys from the ignition
before stepping out of the tractor (ZERO ENERGY)
Keep shields in place and replace after servicing
Never step across a live PTO
Avoid tight turns that pinch rotating shafts between the tractor and attachments
Engage the PTO gradually and at a low RPM
Replace cracked or defective safety shields immediately
Figure 4: Power Take-Off (PTO) Shaft
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DO NOT STAND BETWEEN THE TRACTOR AND IMPLEMENT UNLESS THE
TRANSMISSION IS IN PARK, AND UNIT IS SECURED.
Park and Shut Down One of the main task before parking and shutting down the unit is to fuel up. It is best to fill up
the tank at the end of the night when the engine is cooled to avoid condensation of water in
the tanks. Under normal conditions, the air space in a tank holds some moisture. In the winter
time, this moisture has a tendency to condense and freeze. When water freezes in fuel lines,
premature injection pump and injector failure occurs. If the tank is kept full, there is little or no
air space for condensation and freezing to occur.
DO NOT OVERFILL THE TANK! COLD FLUID EXPANDS AT WARMER
TEMPERATURES.
In contrast, it is important to not overfill your vehicle’s tank, especially if the unit will be parked
in a warmer environment. If the tank if filled to the brim in cold weathers and left in the garage
overnight, you would see quite a bit of fuel on the ground the next morning. Besides the waste,
this situation presents a fire hazard. As soon as the automatic release on the nozzle shuts off,
you should stop filling
Procedure for Refueling Follow these steps when filling the tank of your tractor:
Shut down engine
Select appropriate fuel grade
Fill tank to initial automatic nozzle release
Make sure area around filler cap is wiped clean
Tightly secure tank cap
Place nozzle back in place
Record fuel used accordingly
The Idle Tractor It is common practice to leave the tractor engine running especially during winter to stay warm.
This practice is wrong, especially for tractors running on diesel. By leaving a diesel to idle for a
long period of time, you are actually cooling it down too much. Diesel engines are at their best
when they are operating at maximum rpm. Idling a diesel engine results in uneven distribution
of heat in the engine block, distortion of cylinders and severe engine damage. A tractor should
not be left to idle for more that 10-15 minutes between jobs.
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Procedure for Shutting Down Most diesel engines should be allowed to cool down for at least 5 minutes before they are
parked and shutdown. This is very important for engines equipped with turbo charges. Some
diesel engines will not shut down when you turn the key. There is often a separate shutdown
lever or knob which cuts supply of fuel to pump. Make sure you know how to shut down your
diesel engine properly.
THE KEY SHOULD ONLY BE SHUT OFF AFTER THE FEUL SHUT OFF HAS BEEN
ACTIVATED
Record Keeping
Card Lock System The card lock system is simple to operate. As an operator you will be issued a card with your
own security number. This is the main process for purchasing fuel however there are also
company specific cards for units that don’t have card lock. After filling your unit, press clear and
the five-digit number on the back of the card, this will get you a receipt.
Routine Maintenance Tractor like any other piece of equipment have to be washed. Nothing looks worse than a unit
working in a maintenance situation covered in dirt and mud. Salt and sand in winter operations
should be washed every day.
Daily Preventative Maintenance Preventative maintenance should be part of the operator’s circle check since preventative
maintenance has to be done to extend the life of the equipment. It is important to familiarize
yourself with the different points which have to be greased. The purpose of grease is to prevent
metal-to-metal contact and to prevent dirty and gritty material from coming between moving
parts. Always consult the operator’s manual for proper daily lubrication points. You must
memorize all the points so that you don’t neglect any. Don’t forget that some high wear point
has to be greased more than once a day if you are working in adverse conditions (in sand and
salt, on a wed muddy terrain, etc.).
SAFETY TIP IS TO NEVER SERVICE THE UNIT WHILE THE ENGINE IS RUNNING
(ZERO ENERGY)
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Operator equipment check sheet and service record Servicing is the responsibility of the operator for most MHI equipment’s. Routine servicing will
be entered on an operator’s equipment check sheet and service record. Oil changes should be
done when the engine is hot in order to flush out suspended dirt in the oil.
Remove the oil pan drain plug and let oil drain in a proper container. (leave plug
out and let oil drip)
Remove oil filter
Check transmission oil level and top up as needed (See operator’s manual for
proper procedure)
Check transmission breather
Check different breather
Examine the exhaust system and report on general conditions of the pipe,
fittings, brackets, etc.
Check and lubricate all chassis points requiring grease
Tie rod ends
All grease fittings
Check cab hood and body for overall condition
Steps
Draw bar and wing
Tires (condition and air pressure)
Batteries (check connections and electrolyte level)
Radiator (Check coolant level)
Check for leaks (Overall unit)
THE OPERATOR IS RESPONSIBLE FOR THE SAFE OPERATION AND CARE OF
THE TRACTOR.
Attaching and Detaching implements
Block the wheels on attachment (if applicable)
Chain or block hitch to the correct height
Do not stand between the tractor and implement while the tractor is in reverse
Make sure the tractor is properly counter-weighted and that all attachments are
secure and properly mounted
Make sure the tractor is large enough to handle its load and hitch the load only
to the tractor’s drawbar hitch points. The drawbar is designed for pulling heavy
loads without the risk of a backward overturn.
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Loading Equipment’s Most tractors are not designed for travelling long distances. Even if you could reach decent
cruising speeds, the suspension and steering would not allow proper control. Since the tractor
is not a great traveler, it has to be transported on a trailer. When transporting tractor via
trailers, it is very important to properly secure the equipment before proceeding.
Tie-Downs Tie downs are rated by “working load limit” (WLL) on the tie down. The strength of a tie down is
called its breaking strength or rated capacity. WLL is normally at least one-third of its breaking
strength. The strength of a tie down is based on the weakest link. Markings on tie downs may
be cast or stamped into the metal or printed onto attached tags. When using tie downs, use
them in relation to the direction you are restraining against (forward, sideways and rear
movement). Think about what you want the tie down to do and decide how to position them.
For more details regarding load securement and information on WLL for chains and chain hooks
see the load securement course trailer towing level 2. Appendix A contains a table for
information on WLL for chains and chain hooks
THE LOAD ON A TIEDOWN MUST NEVER EXCEED ITS WORKING LOAD LIMIT
(WLL)
Figure 5: Stamped and casted markings on tie downs
When loading and unloading tractors:
Ensure trailer is hooked-up to truck before any loading/unloading operation
Make sure trailer bed and ramps are clear of any debris
Plan ahead to minimize the need for backing
Always check to the rear before backing and use an observer when available.
Never load a trailer beyond its recommended capacity
Be aware of height and width of load
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Apply the parking break and place all attachments to the deck
Make sure cargo is properly loaded and secured using only approved chain and
load binders.
IT IS GOOD PRACTICE TO BACK TWO WHEEL DRIVE TRACTOR ONTO
TRAILERS.
MAKE SURE BA-UP ALARMS ARE WORKING PROPERLY
Transporting Heavy Equipment 1. Articulated loaders require additional restraint to secure against swiveling in the hinge
area if the articulation bar is not locked
2. Heavy equipment or machinery must have four anchor point and four chains for
transport (more if needed)
3. WLL of all tie downs must be equal or greater than 50% of the loader to prevent
sideways and rearward movement
4. Inspect the attachment points on heavy equipment and tie downs for wear and damage
before you load
Figure 6: Securing Tractor on Trailer
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Attachments The tractor is a universal equipment; many different attachments can be added to a tractor to
utilize the use. Across the ministry, attachments such as mower, snow blowers and rotary
brooms are used of road operations and maintenance.
Mowers When you are about to use a mower be sure the transmission is out of gear and the mower
blade clutch disengaged before starting the engine. Engage the mower drive at a low engine
RPM and the equipment at maximum cutting height. Check for excessive vibration and unusual
noises. If there is any indication of trouble, shut the machine down and carry out an inspection.
Mower blades may continue to rotate for some time, so wait until all movement has stopped
before leaving the tractor seat. Block the raised mower before inspection
Figure 7: Mower
Safe mowing practices:
Raise speed to rated RPM and lower the mower to the desired working height
Proper ground speed will depend on the height, type and density of material to be cut,
and the nature of the terrain
Slow down on slopes and when turning sharply to avoid a rollover. Be alert for holes or
other hidden dangers
With under mount, rear mount, pull type, and wing mowers, always try to mow down
slopes, never up or across the face
With side mount and offset mowers, always mow across the slope with the mower on
the uphill side. Never operate with the mower pointed downhill. Avoid turning uphill
quickly or sharp with the class of mower
Use extreme caution when operating on very uneven terrain. Ground speed should be
slow, and turns wide and gradual
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Pass diagonally through sharp dips. Avoid sudden drop-offs to prevent ‘hanging up’ of
the tractor and mower
Extreme caution is required when moving ditch banks. If a wing or side mount mower
hits an obstruction, the front of the tractor will usually swerve toward the ditch
Do not mow in reverse unless specifically recommended in the operator’s manual
Always look behind before backing up. Small children or bystanders may have strayed
into the area without your knowledge
Keep feet and hands away from the V-belts, shafts, and other moving parts. In fact, the
mower should not be running unless the operator is sitting on the seat and all
bystanders are clear
Follow recommended shut down procedures before leaving the mower;
Disengage power to the mower
Turn off the engine
Remove the key
NEVER LEAVE A MOWER ON A SLOPE.
OPERATORS ARE RESPONSIBLE FOR THEIR PERSONAL SAFETY AND THAT OF
OTHERS.
Snow Blowers When using this unit, ensure all guards and shields are in place. Pre-season maintenance of a
snow blower is important, check bearing, chains, U-joints, etc. and replace any damaged
component. Make sure that you have a good supply of shear bolts on hand. Before starting to
clear snow, make sure no bystanders are in the blowing area. Remove all foreign objects from
the laneways and yards; metals, stones and bits of wood travel much further and faster than
snow when projected by a blower.
Figure 8: Snow Blower
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Safe snow blowing practice:
Mark lane edges with posts if there is a significant drop-off
Keep the snow blower’s cutting edge tilted up slightly during the first pass
Direct the plume of snow away from buildings and vehicles
Plan snow clearing patters to take advantage of the prevailing wind; snow blowing is
more efficient and visibility is greatly enhanced when you blow with the wind.
CUT POWER TO THE SNOW BLOWER BEFORE YOU LEAVE THE TRACTOR SEAT
Rotary Brooms The broom can be pivotally raised and lowered as well as pivoted sideways. The broom is
mounted in bearing blocks which are supported by a generally C-shaped frame so that the
broom can be removed easily for repair and replacement. A hinged hood is located above the
broom and can be open for easy access to the broom.
The broom is rotated by a central drive located in a middle portion of the broom so that no
drive components extend beyond the sides of the frame. The bearing blocks are mounted on
extensions below the frame to reduce possible interference. The new broom assemblies also
have a hydraulic ram with a floating piston which enables the broom to contact the surface
being cleaned with less pressure, causing substantially less wear on the broom bristles.
Figure 9: Rotary Broom Tractor
Safe rotary Broom Practices:
Ensure all components are working properly before commencing work
Ensure doors/windows are secured in open or closed position at all times
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Ensure bristle length is adequate for duration of job
Ensure fluorescent flags are in position in front of broom
Discharge material to shoulder or ditch
Ensure “slow moving” sign is displayed on the back of the unit
Assess length of sweeping area, wind condition and plan sweeping operations to
minimize visibility problems
Operator positions broom on road surface and sweeping operation commences when
safe to proceed
At first pass seal coat sweeping should remove loose material without disturbing
embedded aggregate
At end of sweep area, broom equipment turns around or backs up to commence the
next sweeping
Leave public awareness signs up as long as required. Ensure that debris is not thrown
onto road surface or oncoming traffic. Erect and report any signs that have been
knocked down
CAUTION SHOULD BE USED WHEN TURNING AROUND OR BACKING UP ON
ROAD SURFACE
Changing Broom Bristles:
Ensure adequate room to perform task (starting and shutting off unit will be required several
times throughout this task use caution)
Use certified chain and appropriate lifting device to remove bristles
Care has to be taken when removing bristles, employees’ must stay back a safe distance
To remove rings from used bristles, the bristles will need to be separated using an axe, hammer,
bar or torch using extreme caution
Lift the bristle drum into a vertical position and place the gear end in a secure stand.
Inspect sprocket and chain for wear
Use a proper ladder or movable stairs to put new bristles and rings on.
Make sure you off set the bristles.
Safely lower the bristles to the floor
Ensure all guards are replaced.
Test unit for proper operation
Complete Documentation
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Safety Precautions Know your machine
Don’t operate a machine with missing or damaged guards
Before dismounting from the tractor, always disengage the power take off (PTO)
Prepare the work area
Protect yourself (PPE)
Watch out for others during start-up
Ongoing monitoring of traffic and surroundings
Under no circumstances should children/Co-workers be anywhere near the work area
No riders!
Relatable SOP’s Visit the MHI website (MHIsafety.ca) and review the following SOP’s
Entering Exiting Units
Safe Lifting
Trailers
Mowing Brushing
Tractor
Sweeping Operation
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Appendix A
WLL for Chain
Chain Size in Millimeters
(inches)
Unmarked Chain Grade 70 transport
Grade 100 alloy
Chain Marking I 7, 70, 700 10, 100, 1000
7 mm 1/4 in
L 1,430 kgs 3,150 lbs
1,950 kgs 4300 lbs
8 mm 5/16 in
L 2,130 kgs 4,700 lbs
2,600 kgs 5,700 lbs
10 mm 3/8 in
E 2,990 kgs 6,600 lbs
4,000 kgs 8,800 lbs
11 mm 7/16 in
G 3,970 kgs 8,750 lbs
n/a
13 mm 1/2 in
A 5,130 kgs 11,300 lbs
6,800 kgs 15,000 lbs
16 mm 5/8 in
L 7,170 kgs 15,800 lbs
10,300 kgs 22,600 lbs
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WLL for Chain Hooks
Clevis Grab Hook Size
Unmarked Grab Hooks
Grab Hooks Gr. 70 Steel
7 mm 1/4 in
Do NOT use 1,431 kgs 3,150 lbs
8 mm 5/16 in
Do NOT use 2,136 kgs 4,700 lbs
10 mm 3/8 in
Do NOT use 3,000 kgs 6,600 lbs
11 mm 7/16 in
Do NOT use 4,000 kgs 8,800 lbs
13 mm 1/2 in
Do NOT use 5,136 kgs 11,300 lbs