- Off-Highway Truck/Tractor
- 777G (S/N: GT71-182; T5A1-123; TNM1-749; RDR1-507; T4Y1-191)
Reference: Special Instruction, M0085106, "Procedure to Install an Improved Fan Drive Assembly on Certain 777G Off-Highway Trucks"
Description Of Change: An improved fan drive assembly is now used on the machines listed above if equipped with variable speed fan. The new fan drive assembly uses ball bearing to increase service life of the fan drive assembly.
Adaptable To:
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| Illustration 1 | g06238678 |
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(1) | |
New 513-9274 Fan Drive Gp (1) replaces the former 341-8061 Fan Drive Gp in the 295-5199 Fan Drive Gp in the fan drive arrangement.
New fan drive group (1) is adaptable to machines within the listed serial numbers, and is effective with all the machines with a variable speed fan after the listed serial numbers.
New fan drive group (1) is adaptable to 777G (S/N: RDR1-507; T5A1-123) machines and 777G machines equipped with variable speed fan (S/N: TNM1-749; T4Y1-191; GT71-182).
Refer to Table 1 for the list of parts required to install new fan drive group.
| Parts List | |
| Qty | Part |
| 3 | 448-1522 Taperlock Stud |
| 3 | 5P-1076 Hard Washer |
| 1 | 3J-7354 O-Ring Seal |
| 1 | 3K-0360 O-Ring Seal |
| 2 | 5K-9090 O-Ring Seal |
| 1 | 214-7568 O-Ring Seal |
| 1 | 4J-5477 O-Ring Seal |
| 1 | 228-7089 O-Ring Seal |
| 8 | 8T-6466 Bolt |
The special instruction can be found on Caterpillar Service Information System (SIS) and through the normal literature system.