- Track-Type Tractor:
- D8T (S/N: J8B1-UP; MLN1-UP; FCT1-UP; KPZ1-UP)
ReferenceDisassembly and Assembly, RENR7480, "D8T Track-Type Tractor Machine Systems", "Hydraulic System Pressure Release"
ReferenceDisassembly and Assembly, RENR7480, "D8T Track-Type Tractor Machine Systems", "Piston Motor (Hydraulic Fan - Remove"
ReferenceDisassembly and Assembly, RENR7480, "D8T Track-Type Tractor Machine Systems", "Piston Motor (Hydraulic Fan) - Install"
ReferenceDisassembly and Assembly, KENR8934, "D8T Track-Type Tractor Machine Systems", "Hydraulic System Pressure Release"
ReferenceDisassembly and Assembly, KENR8934, "D8T Track-Type Tractor Machine Systems", "Piston Motor (Hydraulic Fan) - Remove and Install"
The improved waste handling arrangements (if equipped) contain one new 365-5074 Guard As. The new guard assembly prevents debris from wrapping around the shaft of the fan motor. The guard assembly will improve the service life of the fan motor in the field.
The new 365-5074 Guard As is now part of the 233-9782 Waste Handling Ar (if equipped), and the 341-1555 Waste Handling Ar (if equipped).
The new 365-5074 Guard As is adaptable to machines FCT1-UP, J8B1-UP, KPZ1-UP, and MLN1-417.
The new 365-5074 Guard As became available in production with the machines MLN418-UP.
Use the following procedure to update the earlier machines with the new 365-5074 Guard As.
| Needed Parts | |||
| Item | Qty | Part Number | Description |
| 1 | 1 | 365-5074 | Guard As |
| 2 | 4 | 8T-4195 | Bolts |
| 3 | 12 | 8T-4121 | Hard Washers |
| 4 | 4 | 264-3637 | Bolts |
| 5 | 4 | 8T-0389 | Locknuts |
- Release the hydraulic pressure in your machine. Refer to the above listed documents for the correct procedure for machine on which you are working.
- Apply vacuum pressure to the hydraulic tank. For the correct procedure, refer to the first step in removal process for the hydraulic fan piston motor in the above listed documents.
- Remove the retaining bolts from the grill doors. Open the grill doors. Save the bolts.
- Remove the top left debris guard (6) and the top center debris guards (7) .
 | |
| Illustration 1 | g02691062 |
- Use a suitable lifting device to support the fan spider. The approximate weight of the fan spider is 34 kg (75 lb). Remove the eight bolts (8) that attach the fan spider to the fan adapter. Place the fan spider out of the way. Discard the hardware.
 | |
| Illustration 2 | g02691238 |
- Remove the two hoses that are connected to the hydraulic fan piston motor. Cap the two hoses and the two connections on the hydraulic fan piston motor.
| NOTICE |
|---|
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products. Dispose of all fluids according to local regulations and mandates. |
- Use a suitable lifting device to support the hydraulic fan piston motor. The weight of the hydraulic fan piston motor is approximately 29 kg (64 lb).
- Remove the four bolts (9) and four washers (10) that attach the hydraulic fan piston motor, the fan adapter, and the spacer block to the machine. Remove the hydraulic fan piston motor from the machine. Save the bolts and washers.
 | |
| Illustration 3 | g02691299 |
- Remove the bolt (11) and retainer (12) that attach the fan adapter (13) to the hydraulic fan piston motor. Save the bolt and retainer.
 | |
| Illustration 4 | g02691336 |
- Use a puller to remove the fan adapter from the hydraulic fan piston motor. Refer to the above listed removal process for the hydraulic fan piston motor for the required tooling.
- Slide guard assembly (1) onto the pump shaft and housing.
 | |
| Illustration 5 | g02691377 |
- Install the fan adapter (13) onto the pump shaft and the guard assembly (1). Refer to Illustration 4. Use bolt (11) and retainer (12) that were saved in Step 9 to attach adapter (13) to the pump shaft.
 | |
| Illustration 6 | g02691416 |
- Use a suitable lifting device to install the hydraulic fan piston motor into the machine. The weight of the hydraulic fan piston motor is approximately 29 kg (64 lb). Use the four bolts (9) and four washers (10) that were saved in Step 8 to attach the hydraulic fan piston motor to the machine.
 | |
| Illustration 7 | g02691436 |
- Use a suitable lifting device to position the fan spider to the hydraulic fan piston motor. The approximate weight of the fan spider is 34 kg (75 lb). Use four bolts (2) and four hard washers (3) to attach the fan spider to the adapter. Install the bolts and hard washers in the positions shown in the illustration.
 | |
| Illustration 8 | g02691478 |
- Install four bolts (4) and four hard washers (3) to the fan spider in the remaining four holes. Rotate the fan guard so the bolts align with the fan guard holes. Ensure that the bolts are tightened to the adapter.
 | |
| Illustration 9 | g02691536 |
- Install four hard washers (3) and four locknuts (5) to the four bolts (4) that extend through guard assembly (1). Hold the bolt head and torque the nuts to 55 ± 10 N·m (41 ± 7 lb ft).
 | |
| Illustration 10 | g02691644 |
- Attach the hydraulic hoses to the hydraulic fan piston motor.
- Install the top left debris guard (6) and the top center debris guards (7) that were removed in Step 4.
| | |
| Illustration 11 | g02691062 |
- Close the grill doors. Install the bolts that were saved in Step 3.
- Remove the vacuum pressure from the hydraulic tank. For the correct procedure, refer to the last step in the installation process for the hydraulic fan piston motor in the above listed documents.