303 CR Mini Hydraulic Excavator Caterpillar


Hydraulic System Oil Filter (Return) - Replace

Usage:

303 DMA


NOTICE

Hot oil can cause personal injury. Remove the hydraulic oil filler cap only when the engine is stopped. Allow time for the hydraulic system to cool. Remove hydraulic oil filler cap slowly in order to relieve pressure.


The hydraulic oil tank is located under the access cover on the right side of the machine.

  1. Open the right access cover.

  2. Clean the area thoroughly in order to prevent dirt from entering the hydraulic oil tank.

  3. Slowly loosen the hydraulic oil filler cap in order to relieve the pressure in the hydraulic oil tank.


    Illustration 1g00846912

    Note: Refer to Operation and Maintenance Manual, "General Hazard Information" for information on Containing Fluid Spillage.

  4. Remove bolt (1), washer (2), and right cover (3).

  5. Remove spring (5), valve (6), and element (7) from the case.

  6. Inspect O-ring (4). Replace the O-ring if the O-ring is worn or damaged.

  7. Reverse steps 4 and 5 in order to install the new element.

  8. Tighten the hydraulic oil filler cap.

  9. Close the right access cover.

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