PL72 Pipelayers Power Train Caterpillar

Removal Procedure

Start By:

1. Remove the rear bottom guard.

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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	g03863266

1. Remove bolts (6). Remove tube assembly (5) and harness assembly (1).

2. Remove bolts (3) and (4). Remove torque converter outlet relief valve (2).
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   Illustration 2	g02867642

3. Remove bolts (7), washers (8), cover (9), O-ring seal (10), spring (11), spring (12), shim (13), and spool (14) from body (15).

4. Remove plug (17) and O-ring seal (16).

5. Remove bolts (21), washers (20), cover (19), and O-ring seal (18).

Installation Procedure

1. Install torque converter outlet relief valve (2) in the reverse order of removal.

   1. Tighten bolts (3) and (4) to a torque of 48 ± 4 N·m (35 ± 3 lb ft).