973 Track-Type Loader Caterpillar

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Use caution when changing oil or changing filters. Hot oil or components can cause burns if they contact skin.

The machine should be parked on a level surface. All attachments should be lowered to the ground. The transmission lock lever should be in the LOCKED position. The engine should be OFF.

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Illustration 1	g00513569

1. Remove the crankcase drain access cover, which is in the crankcase guard.

2. Pull the drain line out of the opening.

3. Remove the drain plug from the end of the hose.

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Illustration 2	g00520826

4. Open both access doors on the left side of the machine.

5. Open the drain valve that is located below the transmission oil filter. Drain the oil into a suitable container.

6. Close the drain valve. Replace the drain plug in the drain line.

7. Put the drain hose back into the opening. Install the access cover.

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Illustration 3	g00520832

8. Remove the transmission oil filter.

9. Remove the used filter element and the housing from the filter base. Inspect the seal on the top of the housing. Replace the seal if the seal is cut or damaged.

10. Clean the filter housing with a clean, dry cloth.

11. Install a new filter element into the filter housing. Install the cover assembly into the housing.

12. Fill the transmission with oil. Refer to Operation and Maintenance Manual, "Refill Capacities" for the oil capacity of the transmission.

13. Close the access doors.