583R Pipelayer Machine Systems Caterpillar

Removal Procedure

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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 attachments have been lowered, 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.

1. Release the pressure in the hydraulic system by moving the hydraulic control levers to all positions. Remove the filler cap slowly. The filler cap is located on the top of the hydraulic oil tank.

2. Drain the oil from the hydraulic tank. Refer to Operation And Maintenance, SEBU7109. The tank capacity is approximately 82 L (21.7 US gal).

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Illustration 1	g00501465

Note: The photo of the control valve is shown from the bottom of the machine for better photo illustration. Remove the floorplate in order to obtain access to the control valve. Remove the control valve through this opening.

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NOTICE
Put identification marks on all of the hoses and the linkages as each one is disconnected from the control valve. Plug all openings as each oil line is disconnected in order to keep dirt and debris out of the hydraulic system. The hoses and the linkages must be reinstalled in the original positions in order to ensure proper machine operation.

3. Disconnect oil lines (1), (3) and (6) from counterweight control valve (4) .

4. Disconnect linkage (2) from control valve (4) .

5. Remove three bolts (5) and remove counterweight control valve (4) .