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