420D and 430D Backhoe Loaders Caterpillar


Hydraulic System Oil Filter - Replace

Usage:

420D BKC


Illustration 1g00723507

  1. Pull the hood release lever (1) in order to open the engine access door (2) on the top of the machine.


    Illustration 2g00724530

  2. Remove the hydraulic tank filler cap that is located under the access panel on the top of the engine compartment.


    Illustration 3g00724532

  3. The hydraulic oil filter is located on the left side of the machine.


    Illustration 4g00290851

  4. Remove the filter element with a strap type wrench.

  5. Clean the filter element mounting base. Remove any part of the filter element gasket that remains on the filter element mounting base.

  6. Apply a light coat of oil to the gasket of the new filter element.

  7. Install the new filter element by hand. When the gasket contacts the filter element mounting base, tighten the filter element for an additional three quarters of a turn.

  8. Remove the hydraulic tank breather. Replace the old breather with a new breather.


    Illustration 5g00724596

  9. Maintain the hydraulic oil level in the sight gauge between the "MIN" mark and the "MAX" mark. Add oil, if necessary.

  10. Inspect the gasket on the hydraulic tank filler cap for damage. Replace the gasket, if necessary.

  11. Install the hydraulic tank filler cap.

  12. Close the access door.

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