Disassembly (Fig. 87)
Removeoilfromliftcylinderintoadrainpanbyslowly
Assembly (Fig. 87)
1.
1. Make sure all parts are clean before reassembly.
pumping the cylinder shaft. Plug both ports and clean
the outside of the cylinder.
2.
back--up ring and dust seal with clean hydraulic oil.
Coat new O--rings, piston seal, wear ring, shaft seal,
IMPORTANT: Prevent damage when clamping the
cylinder’s barrel into a vise; clamp on the clevis
only. Do not close vise on barrel.
A. Install piston seal and O--ring to the piston.
B. Install back--up ring, O--ring, wear ring, shaft seal
and dust seal to the head.
2.
Mount lift cylinder in a vise equipped with soft jaws
by clamping on the barrel clevis.
IMPORTANT: When securingshaftinvise,clampon
shaft clevis only. Do not clamp vise jaws against the
shaft surface.
3.
Remove retaining ring that secures head in barrel.
A. Use a spanner wrench to rotate head clockwise
until the edge ofthe retaining ring appears in the bar-
rel opening.
3.
Mount shaft securely in a vise equipped with soft
jaws by clamping on the shaft clevis.
A. Coat shaft with clean hydraulic oil.
B. Slide head and piston onto the shaft.
B. Insert a screwdriver under the beveled edge of
the retaining ring to start the retaining ring through
the opening.
C. Secure piston to shaft with lock nut. Torque lock
nut to 130 ft--lb (176 N--m).
C. Rotatetheheadcounter--clockwisetoremovere-
taining ring from barrel and head.
4.
Slide shaft assembly carefully into cylinder barrel.
Lubricate head and piston with clean hydraulic oil.
4.
ing and pulling on the shaft.
Extract shaft with head and piston by carefully twist-
IMPORTANT: Prevent damage when clamping the
cylinder’s barrel into a vise; clamp on the clevis
only. Do not close vise on barrel.
IMPORTANT: When securingshaftinvise,clampon
shaft clevis only. Do not clamp vise jaws against the
shaft surface.
5.
by clamping on the barrel clevis.
Mount lift cylinder in a vise equipped with soft jaws
5.
vis of the shaft. Remove lock nut and piston from the
shaft. Slide head from the shaft.
Mountshaftsecurelyinavisebyclampingonthecle-
6.
Secure head in barrel with retaining ring.
6.
move O--ring, back--up ring, wear ring, dust seal and
shaft seal from the head.
Remove piston seal and O--ring from the piston. Re-
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.
7.
pressed air. Do not wipe parts dry with paper towels or
cloth. Lint in the hydraulic system will cause damage.
Wash parts in clean solvent. Dry parts with com-
8.
Carefully inspect internal surface of barrel for dam-
age (deep scratches, out--of--round, etc.). Replace en-
tire cylinder if barrel is damaged. Inspect shaft and
piston for evidence ofexcessive scoring, pitting or wear.
Replace any damaged parts.
Groundsmaster 5900/5910
Page 4 -- 119
Hydraulic System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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| Language | English |
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