Product: WHEEL LOADER
Model: 972G WHEEL LOADER 4WW
Configuration: 972G Wheel Loader 4WW00001-UP (MACHINE) POWERED BY 3306 Engine
Operation and Maintenance Manual
966G and 972G Wheel Loaders Media Number -SEBU7035-05
Foreword
SMCS - 7494
Literature Information
Updated -01/03/2002
s00037320
This manual should be stored in the operator's compartment in the literature holder or seat back literature storage area.
This manual contains safety information, operation instructions, transportation information, lubrication information and maintenance information.
Some photographs or illustrations in this publication show details or attachments that can be different from your machine. Guards and covers might have been removed for illustrative purposes.
Continuing improvement and advancement of product design might have caused changes to your machine which are not included in this publication. Read, study and keep this manual with the machine.
Whenever a question arises regarding your machine, or this publication, please consult your Cat dealer for the latest available information.
Safety
The safety section lists basic safety precautions. In addition, this section identifies the text and locations of warning signs and labels used on the machine.
Read and understand the basic precautions listed in the safety section before operating or performing lubrication, maintenance and repair on this machine.
Operation
The operation section is a reference for the new operator and a refresher for the experienced operator. This section includes a discussion of gauges, switches, machine controls, attachment controls, transportation and towing information.
Photographs and illustrations guide the operator through correct procedures of checking, starting, operating and stopping the machine.
Operating techniques outlined in this publication are basic. Skill and techniques develop as the operator gains knowledge of the machine and its capabilities.
Maintenance
The maintenance section is a guide to equipment care. The Maintenance Interval Schedule (MIS) lists the items to be maintained at a specific service interval. Items without specific intervals are listed under the "When Required" service interval. The Maintenance Interval Schedule lists the page number for the step-by-step instructions required to accomplish the scheduled maintenance. Use the Maintenance Interval Schedule as an index or "one safe source" for all maintenance procedures.
Maintenance Intervals
Use the service hour meter to determine servicing intervals. Calendar intervals shown (daily, weekly, monthly, etc.) can be used instead of service hour meter intervals if they provide more convenient servicing schedules and approximate the indicated service hour meter reading. Recommended service should always be performed at the interval that occurs first.
Under extremely severe, dusty or wet operating conditions, more frequent lubrication than is specified in the maintenance intervals chart might be necessary.
Perform service on items at multiples of the original requirement. For example, at every 500 service hours or 3 months, also service those items listed under every 250 service hours or monthly and every 10 service hours or daily.
California Proposition 65 Warning
Diesel engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects, and other reproductive harm.
Battery posts, terminals and related accessories contain lead and lead compounds. Wash hands after handling.
Certified Engine Maintenance
Proper maintenance and repair is essential to keep the engine and machine systems operating correctly. As the heavy duty off-road diesel engine owner, you are responsible for the performance of the required maintenance listed in the Owner Manual, Operation and Maintenance Manual, and Service Manual.
It is prohibited for any person engaged in the business of repairing, servicing, selling, leasing, or trading engines or machines to remove, alter, or render inoperative any emission related device or element of design installed on or in an engine or machine that is in compliance with the regulations (40 CFR Part 89). Certain elements of the machine and engine such as the exhaust system, fuel system, electrical system, intake air system and cooling system may be emission related and should not be altered unless approved by Caterpillar.
Machine Capacity
Additional attachments or modifications may exceed machine design capacity which can adversely affect performance characteristics. Included would be stability and system certifications such as brakes, steering, and rollover protective structures (ROPS). Contact your Cat dealer for further information.
Cat Product Identification Number
Effective First Quarter 2001 the Cat Product Identification Number (PIN) has changed from 8 to 17 characters. In an effort to provide uniform equipment identification, Caterpillar and other construction equipment manufacturers are moving to comply with the latest version of the product identification numbering standard. Non-road machine PINs are defined by ISO 10261. The new PIN format will apply to all Cat machines and generator sets. The PIN plates and frame marking will display the 17 character PIN. The new format will look like the following:
Illustration 1 g00751314
Where:
1. Caterpillar's World Manufacturing Code (characters 1-3)
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2. Machine Descriptor (characters 4-8)
3. Check Character (character 9)
4. Machine Indicator Section (MIS) or Product Sequence Number (characters 10-17). These were previously referred to as the Serial Number.
Machines and generator sets produced before First Quarter 2001 will maintain their 8 character PIN format.
Components such as engines, transmissions, axles, etc. and work tools will continue to use an 8 character Serial Number (S/N).
Copyright 1993 - 2025 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees.
Product: WHEEL LOADER
Model: 972G WHEEL LOADER 4WW
Configuration: 972G Wheel Loader 4WW00001-UP (MACHINE) POWERED BY 3306 Engine
Operation and Maintenance Manual
966G and 972G Wheel Loaders
Media Number -SEBU7035-06
Publication Date -01/09/2002
Articulation Bearings - Lubricate
SMCS - 7057-086-BD; 7065-086-BD; 7066-086-BD
Wipe off the fittings before any lubricant is applied.
Illustration 1 g00885520
Apply lubricant through one fitting on the upper hitch.
Date Updated -11/02/2019
i01722752
2
Apply lubricant through one fitting on the lower hitch.
Copyright 1993 - 2025 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees.
Tue Jan 7 22:35:14 UTC+0530 2025
Product: WHEEL LOADER
Model: 972G WHEEL LOADER 4WW
Configuration: 972G Wheel Loader 4WW00001-UP (MACHINE) POWERED BY 3306 Engine
Operation and Maintenance Manual
966G and 972G Wheel Loaders
Media Number -SEBU7035-06
Publication Date -01/09/2002
Axle Oscillation Bearings - Lubricate
SMCS - 3268-086-BD; 3278-086-BD
Date Updated -11/02/2019
Crushing Hazard. Insure that the machine ignition switch is in the OFF position and that the parking brake is engaged before entering the articulation area. Failure to do so could result in serious injury or death.
Illustration 1 g01007809
Open the rear access panel that is located on the left side of the machine in order to gain access to the remote grease fittings.
i02405745
Illustration 2 g00881949
Wipe all fittings before lubricating.
The top remote grease fitting will lubricate the axle pivot bearing that is on the front of the rear axle. The bottom remote grease fitting will lubricate the axle pivot bearing that is on the rear of the rear axle.
Note: 5P-0960 Molybdenum Grease is preferred. 1P-0808 Multipurpose Grease grease may be used.
Copyright 1993 - 2025 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees. Tue Jan 7 22:35:28 UTC+0530 2025
Product: WHEEL LOADER
Model: 972G WHEEL LOADER 4WW
Configuration: 972G Wheel Loader 4WW00001-UP (MACHINE) POWERED BY 3306 Engine
Operation and Maintenance Manual
966G and 972G Wheel Loaders
Media Number -SEBU7035-06 Publication Date -01/09/2002
Backup Alarm - Test - If Equipped
SMCS - 7406-081
Date Updated -11/02/2019
Turn the engine start switch to the ON position in order to perform the test.
Apply the service brake. Place the transmission into REVERSE.
The backup alarm should sound immediately. The backup alarm will continue to sound until the transmission is placed into NEUTRAL or into FORWARD.
Illustration 1 g00881968
A three-position switch on the backup alarm regulates the volume of the alarm.
The backup alarm is set for the highest sound level when the machine is shipped from the factory. The setting should remain on HIGH unless the job site requires a lower sound level.
i01897507
Copyright 1993 - 2025 Caterpillar Inc.
Product: WHEEL LOADER
Model: 972G WHEEL LOADER 4WW
Configuration: 972G Wheel Loader 4WW00001-UP (MACHINE) POWERED BY 3306 Engine
Operation and Maintenance Manual
966G and 972G Wheel Loaders
Media Number -SEBU7035-06
Battery - Clean
SMCS - 1401-070
Publication Date -01/09/2002
Date Updated -11/02/2019
i01897517
Illustration 1 g00987179
Open the battery compartment on the left rear side of the machine. Remove the battery hold-down. Clean the battery terminals and the surfaces of the batteries with a clean cloth. Coat the battery terminals with petroleum jelly. Make sure that the battery cables are installed securely.
Replace the battery hold-down. Refer to Operation and Maintenance Manual, "Battery HoldDown - Tighten" for the correct torque. Close the battery compartment.
Copyright 1993 - 2025 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees.
Tue Jan 7 22:35:57 UTC+0530 2025
Product: WHEEL LOADER
Model: 972G WHEEL LOADER 4WW
Configuration: 972G Wheel Loader 4WW00001-UP (MACHINE) POWERED BY 3306 Engine
Operation and Maintenance Manual
966G and 972G Wheel Loaders
Media Number -SEBU7035-06 Publication Date -01/09/2002 Date Updated -11/02/2019
Battery - Recycle
SMCS - 1401-561
Always recycle a battery. Never discard a battery.
Always return used batteries to one of the following locations:
• A battery supplier
• An authorized battery collection facility
• Recycling facility
Copyright 1993 - 2025 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees.
i07746330
Tue Jan 7 22:36:11 UTC+0530 2025
Product: WHEEL LOADER
Model: 972G WHEEL LOADER 4WW
Configuration: 972G Wheel Loader 4WW00001-UP (MACHINE) POWERED BY 3306 Engine
Operation and Maintenance Manual
966G and 972G Wheel Loaders
Media Number -SEBU7035-06
Publication Date -01/09/2002
Battery Hold-Down - Tighten
SMCS - 7257-527
Date Updated -11/02/2019
i01897534
Illustration 1 g00882014
Open the battery compartment on the left rear side of the machine.
Over time, the vibration of an operating machine can cause the battery hold-down to loosen. To help to prevent loose batteries and the possibility of loose cable connections, tighten the locknut in the center of the hold-down to a torque of 14 ± 3 N·m (10 ± 2 lb ft).
Copyright 1993 - 2025 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Tue Jan 7 22:36:26 UTC+0530 2025
Product: WHEEL LOADER
Model: 972G WHEEL LOADER 4WW
Configuration: 972G Wheel Loader 4WW00001-UP (MACHINE) POWERED BY 3306 Engine
Operation and Maintenance Manual
966G and 972G Wheel Loaders
Media Number -SEBU7035-06 Publication Date -01/09/2002 Date Updated -11/02/2019
Battery or Battery Cable - Inspect/Replace
SMCS - 1401-510; 1401-040; 1402-040; 1402-510
Personal injury may occur from failure to properly service the batteries.
Batteries give off flammable fumes that can explode. Electrolyte is an acid and can cause personal injury if it contacts the skin or eyes.
Prevent sparks near the batteries. Sparks could cause vapors to explode. Do not allow jumper cable ends to contact each other or the engine. Improper jumper cable connections can cause an explosion.
Always wear protective glasses when working with batteries.
1. Prepare the machine for maintenance. Refer to Operation and Maintenance Manual, Prepare the Machine for Maintenance.
2. Turn the engine start switch key OFF. Turn all of the switches OFF.
3. Turn the battery disconnect switch OFF. Remove the key.
4. Disconnect the negative battery cable from the disconnect switch.
Note: Do not allow the disconnected battery cable to contact the disconnect switch.
5. Disconnect the negative battery cable at the battery.
6. Disconnect the positive battery cable at the battery.
7. Inspect the battery terminals for corrosion. Inspect the battery cables for wear or damage.
i08185587
8. Make any necessary repairs. If necessary, replace the battery cables or the battery.
9. Connect the positive battery cable at the battery.
10. Connect the negative battery cable at the battery.
11. Connect the battery cable at the battery disconnect switch.
12. Install the key and turn the battery disconnect switch ON.
Recycle the Battery
Always recycle a battery. Never discard a battery.
Always return used batteries to one of the following locations:
• A battery supplier
• An authorized battery collection facility
• Recycling facility
Product: WHEEL LOADER
Model: 972G WHEEL LOADER 4WW
Configuration: 972G Wheel Loader 4WW00001-UP (MACHINE) POWERED BY 3306 Engine
Operation and Maintenance Manual
966G and 972G Wheel Loaders
Media Number -SEBU7035-06 Publication Date -01/09/2002 Date Updated -11/02/2019
Belts - Inspect/Adjust/Replace
SMCS - 1357-040; 1357-510; 1357-025
Alternator Belt
Illustration 1
i01488615
g00285126
1. Stop the engine. Open the engine hood. The alternator is on the left side of the machine.
2. Inspect the condition of the alternator belt. If the belt is cracked or frayed, replace the belt.
3. Use a BT-33-72C Borroughs Gauge to check the tension of the alternator belt.
The tension of a used alternator belt with more than 30 minutes of operation at rated speed should be 400 ± 44 N (90 ± 10 lb). The tension of a new alternator belt with 30 minutes of operation or less at rated speed should be 534 ± 22 N (120 ± 5 lb).
Adjusting the Tension of the Alternator Belt
Illustration 2 g00284980
1. Loosen one mounting bolt (1) and adjusting nuts (3) and (4).
2. Turn adjusting nuts (3) and (4) counterclockwise in order to rotate alternator (2) outward until the correct belt tension is reached. Tighten the adjusting nuts.
3. Tighten mounting bolt (1).
4. Recheck the tension of belt (5). If the tension of the belt is incorrect, repeat the adjustment procedure.
Air Conditioner Belt
Illustration 3
g00285119
1. Stop the engine. Open the engine hood. The air conditioner compressor is on the left side of the machine.
2. Inspect the condition of the air conditioner belt. If the belt is cracked or frayed, replace the belt.
3. Use a BT-33-72C Borroughs Gauge to check the tension of the air conditioner belt.
The tension of a used air conditioner belt with more than 30 minutes of operation at rated speed should be 400 ± 44 N (90 ± 10 lb). The tension of a new air conditioner belt with 30 minutes of operation or less at rated speed should be 534 ± 22 N (120 ± 5 lb).
Adjusting the Tension of the Air Conditioner Belt
Illustration 4 g00284981
1. Loosen compressor bracket mounting bolt (1) and adjustment bolt (4).
2. Insert a ratchet with a square drive into the square hole in mounting bracket (3). Use the ratchet as a lever in order to rotate compressor (2) outward. Rotate the compressor until the correct belt tension is reached.
3. Tighten compressor bracket mounting bolt (1) and adjustment bolt (4).
4. Recheck the tension of belt (5). If the tension of the belt is incorrect, repeat the adjustment procedure. Copyright 1993 - 2025 Caterpillar Inc. All Rights Reserved.
Product: WHEEL LOADER
Model: 972G WHEEL LOADER 4WW
Configuration: 972G Wheel Loader 4WW00001-UP (MACHINE) POWERED BY 3306 Engine
Operation and Maintenance Manual
966G and 972G Wheel Loaders
Media Number -SEBU7035-06
Publication Date -01/09/2002
Brake Accumulator - Check
SMCS - 4263-535
Date Updated -11/02/2019
i05092713
Illustration 1 g00882020
1. Turn the engine start switch to the ON position. The alert indicator for brake oil pressure should come on if the braking system is not at normal operating pressure.
2. Start the engine. Run the engine at half speed for 2 minutes in order to increase the accumulator pressure. The alert indicator for brake oil pressure should go off.
3. Stop the engine by turning the machine start switch to off. Wait 5 seconds then turn machine start switch to on, but do not start the engine. Wait for the display monitor to go through startup, key on level checks, and operator selection. Apply the service brakes (fully depress the pedal) for a duration of one second. Release the pedal for a duration of one second. Repeat the application and release process until the alert indicator for brake oil
presure comes on. This will decrease the accumulator pressure. A minimum of five applications of the service brake pedal are required.
4. If the alert indicator comes on after less than five applications of the brake, measure the accumulator precharge pressure. An authorized Caterpillar dealer can measure the nitrogen gas pressure in the accumulator. Use only dry nitrogen gas for recharging.
Copyright 1993 - 2025 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees. Tue Jan 7 22:37:10 UTC+0530 2025
Product: WHEEL LOADER
Model: 972G WHEEL LOADER 4WW
Configuration: 972G Wheel Loader 4WW00001-UP (MACHINE) POWERED BY 3306 Engine
Operation and Maintenance Manual
966G and 972G Wheel Loaders
Media Number -SEBU7035-06
Braking System - Test
SMCS - 4251-081; 4267-081
Publication Date -01/09/2002
Date Updated -11/02/2019
In order to test the braking system, refer to theTesting and Adjusting Service Manual of the braking system for your machine or consult your Caterpillar dealer.
Copyright 1993 - 2025 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees. Tue Jan 7 22:37:23 UTC+0530 2025
i02056278
Product: WHEEL LOADER
Model: 972G WHEEL LOADER 4WW
Configuration: 972G Wheel Loader 4WW00001-UP (MACHINE) POWERED BY 3306 Engine
Operation and Maintenance Manual
966G and 972G Wheel Loaders
Media Number -SEBU7035-06
Publication Date -01/09/2002
Bucket Cutting Edges - Inspect/Replace
SMCS - 6801-510; 6801-040
Date Updated -11/02/2019
Personal injury or death can result from bucket falling.
Block the bucket before changing bucket cutting edges.
Illustration 1 g00764365
(1) Bolts for Cutting Edge (2) Cutting Edge
i03657238
Check the cutting edges and the end bits for wear and for damage. Use the following procedure to service the cutting edges and the end bits:
1. Raise the bucket and place blocking under the bucket.
2. Lower the bucket onto the blocking. Stop the engine.
3. Remove bolts (1), cutting edge (2) and the end bits.
4. Clean all contact surfaces.
5. If the opposite side of the cutting edge is not worn, use the opposite side of the cutting edge. The end bits are not reversible.
If both sides are worn, install a new cutting edge.
6. Install bolts (1). Tighten the bolts to the specified torque.
Reference: Refer to Specifications, SENR3130, "Ground Engaging Tool (G.E.T.) Fasteners".
7. Start the engine. Raise the bucket and remove the blocking. Lower the bucket to the ground.
8. After a few hours of operation, check the bolts for proper torque.
Bucket Wear Plates
Personal injury or death can result from the bucket falling. Block the bucket before changing bucket wear plates.
Illustration 2 g00879740
Inspect the wear plates. Replace the wear plates before damage to the bottom of the bucket occurs. Consult your Caterpillar dealer for replacement of wear plates.
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