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Workman HD Series Page 9 − 59 Hydraulic System
Inspection
1. Wash all cylinder parts in clean solvent. Dry parts
with compressed air. Do not wipe parts dry with paper
towels or cloth. Lint in the hydraulic system will cause da-
mage.
2. Carefully inspect internal surface of barrel for dam-
age (deep scratches, out−of−round, etc.).
3. Inspect shaft and piston for evidence of excessive
scoring, pitting or wear.
4. Replace steering cylinder if internal components are
found to be worn or damaged.
Assembly (Fig. 45)
1. Use a new seal kit to replace all seals, O−rings and
wear ring to piston and heads. Apply clean Dexron III
ATF to all seal kit components before installing.
2. Install rear head with new seals onto rear shaft.
IMPORTANT: Make sure to not damage O−ring as
piston is installed over roll pin hole in rear shaft.
3. Install piston with new seals and back−ups onto rear
shaft.
IMPORTANT: When installing roll pin into front and
rear shafts, make sure that shaft surfaces are not
damaged.
4. Slide front shaft onto rear shaft and align roll pin holes
in shafts. Install the ⅛” x ⅞” roll pin to secure shafts.
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 steering cylinder in a vise equipped with soft
jaws by clamping on the barrel clevis.
6. Coat all cylinder components with clean Dexron III
ATF. Slide shaft assembly into barrel, being careful to not
damage seals during installation.
7. Insert front head assembly into the barrel being care-
ful to not damage head seals during installation.
8. Secure front and rear heads in barrel with retaining
rings.
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