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Workman HD Series Page 9 − 63 Hydraulic System
Assembly (Fig. 47)
1. Make sure all parts are clean before assembly.
2. Coat new O−rings, piston seal, wear ring, shaft seal,
back−up ring and dust seal with clean Dexron III ATF.
A. Install piston seal, O−rings and wear ring to the
piston.
B. Install O−ring, back−up seal, seal and wiper to the
head.
IMPORTANT: When securing shaft in vise, clamp on
shaft clevis only. Do not clamp vise jaws against the
shaft surface.
3. Mount shaft securely in a vise equipped with soft jaws
by clamping on the shaft clevis.
A. Coat shaft with clean Dexron III ATF.
B. Slide head and piston onto the shaft.
C. Secure piston to shaft with lock nut. Torque lock
nut from 60 to 75 ft−lb (81 to 102 N−m).
4. Lubricate head and piston with clean Dexron III ATF.
Slide shaft assembly carefully into cylinder barrel.
IMPORTANT: Prevent damage when clamping the
cylinder’s barrel into a vise; clamp on the clevis
only. Do not close vise on barrel.
5. Mount lift cylinder in a vise equipped with soft jaws by
clamping on the barrel clevis.
6. Secure head in barrel with retaining ring.
A. Align retaining ring hole in the head with the ac-
cess slot in the barrel.
B. Insert the retaining ring hook into the hole and ro-
tate head clockwise until the retaining ring is com-
pletely pulled into the barrel and the ring ends are
covered.
C. Apply silicone sealer to tube access slot.
Hydraulic
System