Caterpillar — Transmission Oil - Change

Maintenance

From a Caterpillar owner's manual — check it applies to your exact model before use.

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Procedure

1. Operate the engine in order to warm the transmission oil. Park on level ground. Lower the bucket and apply slight downward pressure.
2. Engage the parking brake. Stop the engine.
3. Remove the drain plug on the bottom of the transfer case.
4. Change the transmission oil filter.
5. Remove the four bolts, the cover and the seal that holds the magnets and the screen.
6. Remove the screen and the magnets from the transfer case housing.
7. Wash the screen in a clean, nonflammable solvent. Use a bristle brush or pressure air to clean the screen. Clean the magnets. Replace any damaged magnets.
8. Clean the cover. Inspect the cover seal. Replace the cover seal if damaged.
9. Insert the magnets and the screen into the transfer case housing. Install the seal, the cover and the four bolts.
10. Clean the transmission oil drain plug and install it.
11. Remove the oil filler cap on the left side of the machine and fill the transmission with oil.
12. Remove the breather from the top of the transfer case. Wash the breather in a clean, nonflammable solvent. Install the breather.
13. Start and run the engine at low idle. Inspect the machine for leaks. Slowly operate the transmission controls to circulate the oil.
14. Check the transmission oil level.

Source: Caterpillar owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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