446B Backhoe Loader Caterpillar

Operate the machine for a few minutes in order to warm the transmission oil.

The machine should be level. Lower the bucket to the ground and apply slight downward pressure. Engage the parking brake and stop the engine.

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1. Remove the transmission drain plug. Allow the transmission oil to drain into a suitable container. Clean the transmission drain plug and install the transmission drain plug.

2. Change the transmission oil filter element. Refer to Operation and Maintenance Manual, "Transmission Oil Filter - Replace".

3. Clean the transmission magnetic screen. Refer to Operation and Maintenance Manual, "Transmission Magnetic Screen - Clean".

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Illustration 2	g00105081

4. Remove the engine access door on the left side of the machine.

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Illustration 3	g00107039

5. Remove the dipstick/fill cap and fill the transmission with transmission oil. Refer to Operation and Maintenance Manual, "Lubricant Viscosities" and Operation and Maintenance Manual, "Refill Capacities".

6. Start the engine and run the engine at low idle. Apply the service brake. Slowly operate the transmission controls in order to circulate the oil.

7. Move the transmission control lever to NEUTRAL and engage the parking brake. Inspect the transmission for leaks.

8. Maintain the transmission oil level between the "ADD" mark and the "FULL" mark on the dipstick when the transmission is warm. Add transmission oil through the transmission filler tube, if necessary.

9. Install the dipstick/fill cap and install the engine access door.

10. Stop the engine.