D11R Track-Type Tractor Hydraulic System Return Screen - Clean Caterpillar


Hydraulic System Return Screen - Clean
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D11R Track-Type Tractor [SEBU7185]
HYDRAULIC SYSTEM
TANK GP
D11R Track-Type Tractor Hydraulic System Oil Sample - Obtain
D11R Track-Type Tractor Hydraulic System Return Screen - Clean

The screen should be cleaned especially when one of the following situations have occurred:

  • Failure of the Implement Pump

  • Failure of the Fan Pump

  • Failure of the Fan Motor

  • Cleaning of the Hydraulic Tank

  • PCR (Engine Overhaul)

  1. Park the machine on a level surface. Lower the work tool to the ground. Engage the parking brake.

  2. Turn the engine start switch key to ON.

  3. Move the hydraulic control levers through all of the positions in order to release pressure.

  4. Turn the engine start switch key to OFF.

    ------ WARNING! ------

    At operating temperature, the hydraulic tank is hot and under pressure.

    Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin.

    Before removing the filler cap, press the valve relief button on the hydraulic tank in order to relieve the tank pressure.

    Remove the filler cap only when the engine is stopped and the filler cap is cool enough to touch with your bare hand. Remove the filler cap slowly in order to relieve any remaining pressure.




    Illustration 1g00910203
    Top View of the Hydraulic Tank

  5. Press button (1) on the breaker relief valve in order to relieve any tank pressure. Slowly remove filler cap (2).


    Illustration 2g01068953
    Bottom View of Hydraulic Tank
    (3) Hydraulic Oil Tank
    (4) Return Screen
    (5) Block
    (6) Suction for Implement Pump
    (7) Suction for Fan Drive Pump

  6. Drain hydraulic oil tank (3).

    Reference: For the correct procedure, refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change".

  7. Disconnect the drain lines.

  8. Unbolt block (5).

  9. Remove return screen (4). Clean the screen with a clean, nonflammable solvent.

  10. Inspect the O-ring seal. If the seal is damaged, replace the seal.

  11. Replace return screen (4).

  12. Replace block (5).

  13. Assemble the drain lines.

  14. Fill the hydraulic tank.

    Reference: For the correct procedure, refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change".

  15. Replace filler cap (2).

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