Installation Procedure for the Conversion of the Fan Drive System on Certain Track-Type Loaders {1359} Caterpillar

Track-Type Loader

973C (S/N: LDX1-UP)

973D (S/N: LCP1-UP)

Introduction

This Special Instruction contains the needed procedure for installing the 500-5015 Fan Drive Gp, 500-5856 Fan Drive Gp, or 500-5857 Fan Drive Gp to replace the 251-3600 Fan Clutch Gp.

The procedure is broken up into three groups. Group 1 contains the parts and instructions for installing 500-5015 Fan Drive Gp on 973C. Group 2 contains the parts and instructions for installing 500-5856 Fan Drive Gp on 973D with a standard fan. Group 3 contains the parts and instructions for installing 500-5857 Fan Drive Gp on 973D with a Flexxaire fan.

Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.

Safety Section

Do not perform any procedure in this special instruction until you have read this special instruction and you understand this information. Use only proper tools and observe all precautions that pertain to the use of those tools. Failure to follow these procedures can result in personal injury. The following procedures should also be observed.

Work safely. Most accidents that involve product operation, maintenance, and repair are caused by failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs.

A person must be alert to potential hazards. This person should also have the necessary training, skills, and tools to perform these functions properly.

Safety precautions and warnings are provided in this instruction and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons. Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard.

Therefore, the warnings in this publication and the warnings that are on the product are not all inclusive. If the tools, the procedure, the work method, or your actions are not recommended by Caterpillar, ensure that the tools and your actions are safe for you and for others.

Ensure that the product will not be damaged or the product will be made unsafe by the operation, lubrication, maintenance, or the repair procedures.

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Personal injury or death can result from sudden machine movement. Sudden movement of the machine can cause injury to persons on or near the machine. To prevent injury or death, make sure that the area around the machine is clear of personnel and obstructions before operating the machine.

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Do not attempt to assemble this machine until you read and you understand the assembly instructions. Improper assembly procedures could result in injury or death.

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Personal injury or death can result from improper lifting or blocking. When a hoist or jack is used to lift any part or component, stand clear of the area. Be sure the hoist or jack has the correct capacity to lift a component. Install blocks or stands before performance of any work under a heavy component. Approximate weights of the components are shown. Clean all surfaces where parts are to be installed.

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Personal injury can result from hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the attachments have been lowered, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.

Reference Section

Reference: Disassembly and Assembly , RENR9579 , "Fan Drive - Remove "

Reference: Disassembly and Assembly , RENR9579 , "Vibration Damper and Pulley - Remove and Install "

Reference: Disassembly and Assembly , RENR9579 , " Fan Drive - Install"

Reference: Operation and Maintenance Manual , SEBU8029 , " Belt - Inspect/Replace"

Reference: Disassembly and Assembly , KENR6523 , "Fan - Remove and Install "

Reference: Disassembly and Assembly , KENR6523 , "Fan Drive - Remove "

Reference: Disassembly and Assembly , KENR6523 , " Fan Drive - Install"

Reference: Disassembly and Assembly, RENR9579

Required Parts

Installation Procedure for Group 1 (973C)

1. Shut off the engine. Lower all machine implements to the ground and purge all hydraulic systems of remaining pressure.
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   Illustration 1	g06037038

2. Remove the fan and fan drive.
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   Illustration 2	g06037046

3. Remove compressor belt (26) and pulley (27).

4. Replace the crack shaft pulley with pulley (7).
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   Illustration 3	g06037062

5. Install pulley (4) using the following hardware:
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   Table 5

   Item	Qty	Part Number	Description
   12	1	5M-9735	Lip Type Seal
   13	2	6B-1124	Ball Bearing
   14	1	1L-8545	Spacer
   15	1	7C-8370	Dust Cap
   16	1	222-9151	Hard Washer
   17	1	6V-4248	Bolt
   18	1	198-0308	Lubricant

6. Pack bearing with lubricant (18). 8 gram (0.28 ounce) in the seal cavity, 14 gram (0.49 ounce) in the cavity between the bearings, and 32 gram (1.12 ounce) in the front cavity.
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   Illustration 4	g06037077

7. Bolt adapter (3) onto fan (28) using existing bolts (29) and washers (30).
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   Illustration 5	g06037083

   Note: Fan drive assembly (5) is approximately 53 kg (117 lb)

8. Use a suitable lifting device to position fan drive assembly (5). Attach fan drive assembly (5) using bolts (10) and washers (11).
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   Illustration 6	g06037086

9. Replace the existing fitting and elbow with elbow (21), O-ring seals (19) and (20), fitting (22), and O-ring seal (23) on the clutch.
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   Illustration 7	g06037095

10. Install pulley (6) with bolts (9), belt set (2), and belt (1).
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    Illustration 8	g06037099

11. Connect the fan assembly to fan drive assembly (5) with bolts (8) and washers (11).

12. Flash software (25) onto the machine.

Installation Procedure for Group 2 & 3 (973D)

1. Shut off the engine. Lower all machine implements to the ground and purge all hydraulic systems of remaining pressure.
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   Illustration 9	g06042582

2. Measure the distance between the finger guard and the fan plate mounting on the engine. If the distance is greater than 255 mm (10.039 inch), remove the two inner rings of the finger guard to provide clearance with the new fan clutch.

3. Remove the fan assembly.

4. Remove fan drive.
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   Illustration 10	g06042588

5. Disconnect spacer (18) from new fan drive (1).
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   Illustration 11	g06042617

   Note: Only perform this step for machines from group 2.

6. Connect new spacer (18) to the fan with bolts (10) and washers (11).

   Note: Only perform this step for machines from group 3.

7. Connect adapter (13) to 377-9782 Adapter with bolts (16) and washers (17).
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   Illustration 12	g06042645

8. Reposition the fan assembly.
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   Illustration 13	g06042655

   Note: Fan drive assembly (1) is approximately 53 kg (117 lb)

9. Use a suitable lifting device to position fan drive assembly (1). Attach fan drive assembly (1) using bolts (8) and washers (9).
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   Illustration 14	g06042696

10. Replace the existing fitting and elbow with elbow (4), O-ring seals (3) and (2), fitting (5), and O-ring seal (6) on the clutch.

11. Connect the fan assembly to fan drive (1).

    Note: Only perform this step for machines from group 2.

    1. Use bolts (7) and washers (9).
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       Illustration 15	g06042719

       Note: Only perform this step for machines from group 3.

    2. Install stud (14) on fan drive (1) first, then washers (9) and nuts (15). Engage the nuts on the studs before putting the fan in the final position to allow enough clearance when inserting the nuts.

    3. Flash software (12) onto the machine.