caution - Toro

Disassembly (Figs. 92 and 93)
1. Remove oil from lift cylinder into a drain pan by slowly
pumping the cylinder shaft. Plug both ports and clean
the outside of the cylinder.
IMPORTANT: Prevent damage when clamping the
cylinder in a vise; clamp on the clevis only. Do not
close vise enough to distort the barrel.
2. Mount lift cylinder securely in a vise by clamping on
the clevis end of the barrel. Use of a vise with soft jaws
is recommended.
3. Loosen head from barrel:
A. Use a spanner wrench to rotate head clockwise
until the edge of the retaining ring appears in the barrel
opening.
B. Insert a screwdriver under the beveled edge of
the retaining ring to start the retaining ring through
the opening.
C. Rotate the head counter--clockwise to remove retaining
ring from barrel and head.
4. Extract shaft with head and piston by carefully twisting
and pulling on the shaft.
IMPORTANT: Do not clamp vise jaws against the
shaft surface. Protect shaft surface before mounting
in a vise.
5. Mount shaft securely in a vise by clamping on the clevis
of the shaft. Remove lock nut and piston from the
shaft. Slide head off the shaft.
6. Remove and discard all seals and O--rings from the
piston and the head.
7. Wash parts in clean solvent. Dry parts with compressed
air. Do not wipe parts dry with paper towels or
cloth. Lint in a hydraulic system will cause damage.
8. Carefully inspect internal surface of barrel for damage
(deep scratches, out--of--round, etc.). Replace entire
cylinder if barrel is damaged. Inspect piston rod and
piston for evidence of excessive scoring, pitting or wear.
Replace any damaged parts.
Assembly (Figs. 92 and 93)
1. Make sure all cylinder components are clean before
assembly.
2. Coat new seal kit components with clean hydraulic
oil.
A. Install new seals and O--rings to the piston.
B. Install new seals, O--ring and back--up ring to the
head.
IMPORTANT: Do not clamp vise jaws against the
shaft surface. Protect shaft surface before mounting
in a vise.
3. Mount shaft securely in a vise by clamping on the clevis
of the shaft.
A. Coat shaft with clean hydraulic oil.
B. Carefully slide head and piston onto the shaft.
Secure piston to shaft with lock nut.
C. Torque lock nut to specification in Figure 92 (front
deck cylinder) or Figure 93 (wing cylinder).
4. Lubricate head and piston with hydraulic oil. Carefully
slide shaft assembly into cylinder barrel.
IMPORTANT: Prevent damage when clamping the
cylinder’s barrel into a vise; clamp on the clevis
only. Do not close vise enough to distort the barrel.
5. Mount lift cylinder in a vise with soft jaws. Secure
head in barrel:
A. Align retaining ring hole in the head with the access
slot in the barrel.
B. Insert the retaining ring hook into the hole and rotate
head clockwise until the retaining ring is completely
pulled into the barrel and the ring ends are
covered.
C. Apply silicone sealer to barrel access slot.
Hydraulic
System
Groundsmaster 4100--D
Page 4 - 133
Hydraulic System