538 LL GF Forest Machine Machine Systems Caterpillar

Removal Procedure

Start By:

1. Release the hydraulic system pressure.

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Personal injury can result from hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.

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Illustration 1	g02532717

1. Remove the cap from the hydraulic tank. Install Tooling (A) onto the hydraulic tank. Attach an air supply hose to Tooling (A). Apply 276 to 414 kPa (40 to 60 psi) of air. This procedure will pull vacuum on the hydraulic system.
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   Illustration 2	g06105940

2. Remove bolts (1) and plate assembly (2).
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   Illustration 3	g02138376

3. Disconnect hose assemblies (3) and harness assemblies (5).

4. Remove bolts (4) and control manifold (6).
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   Illustration 4	g06105956

5. Remove accumulator (7) from control manifold (6).

6. Remove bolts (8) and plate (9) from control manifold (6).

Installation Procedure

1. Install control manifold (6) in the reverse order of removal.

   1. If control manifold (6) is made of aluminum, tighten bolts (8) to a torque of 50 ± 10 N·m (37 ± 7 lb ft). All else, tighten bolts (8) to 100 ± 20 N·m (74 ± 15 lb ft).

   2. Check the hydraulic oil level. Refer to , "Hydraulic System Oil Level - Check".