Changing Hydraulic Oil

CQ280167-UN-29FEB08

CM023500042-UN-07FEB05

1. Remove hydraulic tank vent cap (A) to allow venting.

2. Remove drain cap (B) located at the bottom rear of hydraulic tank.

   NOTE: Allow oil to drain into a container. Dispose of oil according to employer and government guidelines.

3. While oil is draining into a container, replace the hydraulic filters. See "Changing Hydraulic Filters" in this section.

   NOTE: Be sure to replace tank cover with seal to maintain cleanliness of the system. Tighten bolts to 35 N˙m (25 Lb-Ft).

4. After oil has finished draining, remove access cover (C) and clean tank inner surface.

5. Clean and replace cover O-ring and install access cover. Torque bolts to 35 N˙m (25 Lb-Ft).

6. Install vent and drain plugs.

7. Fill hydraulic tank. See "Adding Hydraulic Oil" in this section.

8. Prime hydraulic system by cranking engine ten seconds. If engine starts before the ten seconds, turn off ignition switch to stop engine and crank engine again.

9. Start engine and run for 5 minutes. Shut off engine.

10. Check for leaks. Check sight gauges for oil level. Add additional oil if necessary.