Whirlpool TU 4100 Owner's Manual download pdf (Page 29)

Doc # 99-5846-A

Repair Guide - Control Valve Overhaul

Remove the cap screw and lock washer which attach

the valve handle to the spool. Note: If the spool

turns so that the screw cannot be removed, hold the

end of the spool at the opposite end beyond the

retaining ring with locking pliers or similar. Do not

grip the area which slides in the valve body.

Replace the two o-rings in the valve body with new

o-rings. Lubricate the o-rings with hydraulic fluid

before installing them.

The control valve can be overhauled to correct external

leakage only. If the valve has excessive internal bypass,

it will need to be replaced entirely.

Prior to reassembly inspect all components for wear and

damage. Do not reinstall defective components.

Disassembling the Control Valve

Reassembling the Control Valve

Remove the spacer collar (one-way only).

Remove the spool by sliding it toward the retaining

ring side. Note that the retaining ring does not have

to be removed.

Remove the two o-rings from the valve body.

Install the retaining ring on the spool, if it was

removed.

Lubricate the spool with hydraulic fluid and insert it

into the valve body.

Attach the valve handle with the cap screw and lock

washer.

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Whirlpool TU 4100 Owner's Manual Page 29