349F and 352F Excavators Machine Systems Shuttle Valve - Remove and Install - Straight Travel 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	g02137495

1. Remove bolts (2) and plate assembly (1).
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   Illustration 2	g02137533

2. Disconnect hose assemblies (3) from shuttle valve (4).

3. Remove bolts (5) and shuttle valve (4).
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   Illustration 3	g02137554

4. Remove fitting (7), O-ring seal (8), and ball (9). Repeat for the remaining fittings (6).

Installation Procedure

1. Install shuttle valve (4) in the reverse order of removal.

   1. Apply Tooling (A) to the threads of bolts (2).