Differential and Final Drive Oil - Change
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| NOTICE |
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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, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. |
- Operate the machine until the oil in the differential is warm.
- Park the machine on level ground. Slowly move the machine until drain plug (1) is at the lowest point on one of the final drives. Ensure that the parking brake is fully engaged. Stop the engine.
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| Illustration 1 | g00600965 |
- Wipe the area around drain plug (1) on the final drive before you remove the plug. Remove drain plug (1). Allow the oil to drain into a suitable container.
- Clean the final drive drain plug and inspect the O-ring seal for damage. Lubricate the O-ring seal with gear oil and install the plug.
Note: The plug is magnetic. Check the plug for ferrous particles that may indicate wear of the differential and final drive components.
- Start the engine and release the parking brake.
- Repeat Step 2 through Step 4 for the remaining final drives.
- Remove differential drain plug (2) from the front axle, and allow the oil to drain into a suitable container.
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| Illustration 2 | g00600967 |
- Clean the differential drain plug and inspect the O-ring seal for damage. Lubricate the O-ring seal with gear oil and install the plug.
Note: The plug is magnetic. Check the plug for ferrous particles that may indicate wear of the differential and final drive components.
- Start the engine.
- Slowly move the machine until "Oil Level" mark (4) on the front right final drive is horizontal. Ensure that the parking brake is fully engaged. Stop the engine.
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| Illustration 3 | g00601012 |
- Add oil to the final drive through plug hole (1) on the final drive. Refer to the Operation and Maintenance Manual, "Lubricant Viscosities and Refill Capacities". Maintain the oil level to the bottom of the plug hole. If necessary, add more oil. Allow the oil to flow along the axle housing and settle at a common level.
- The speed of filling can be increased by removing axle housing plug (3). Add oil through the plug hole in the axle housing. Add oil until the oil drips from the plug hole.
- Clean plug (1) and install the plug to the front right side final drive.
- Start the engine.
- Repeat Step 10 through Step 14 for the front left final drive.
- Operate the machine for a few minutes. Slowly move the machine until "Oil Level" mark (4) on the front right final drive is horizontal. Ensure that the parking brake is fully engaged. Stop the engine. Check the oil level at axle housing plug (3). Repeat for the front left side final drive.
- Repeat the procedure in order to change the oil in the center axle and the rear axle.
- Repeat Step 16 for the center final drives.
- Repeat Step 16 for the rear final drives.
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