Whirlpool TU 4100 Owner's Manual download pdf (Page 24)

Repair Guide - Hydraulic Module Overhaul

Stretch a parabolic backup ring into each o-ring boss

groove on the head and base manifolds. The cupped

surface should face toward the inside of the barrel.

Wipe oil onto the o-rings. If they are not oiled the o-rings

could be damaged when the barrel is slid over the o-ring

boss.

Wipe oil onto the transfer tube o-rings and then insert

them into the transfer tube grooves in the head and base

manifolds.

Use the poppet seat tool and a hammer to form the seat

for the poppet to seal against.

Fold the wear rings and insert them into the wide groove

in the shaft holes.

Use the rod seal insertion tool to fold the shaft seal as

shown. Insert the seal into the next groove up from the

wear ring in the shaft holes. Orient the seal so that the

wiper lip is toward the barrels.

Then stretch an o-ring into the grooves so that the o-ring

will be furthest toward the inside of the barrel. Be sure

that the o-ring is sitting down in the groove all the way

and not resting on the backup ring.

Before installing any seal be sure to inspect the seal

and sealing surface/groove and remove any debris

or rough surface.

O-Ring

Backup

Doc # 99-5846-A

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Whirlpool TU 4100 Owner's Manual Page 24