Toro Greensmaster 3150 Service Manual page 89

Disassembly
1. Remove the oil from the cylinder by slowly pumping
the cylinder shaft while holding the cylinder over a drain
pan. Plug both ports and clean the outside of the cylin-
der.
IMPORTANT: Prevent damage when clamping the
hydraulic cylinder into a vise; clamp on the cap end
only. Do not close vise enough to distort the barrel.
2. Mount lift cylinder in a vice. Remove internal collar
with a spanner wrench.
3. Extract shaft, 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 mount-
ing in a vice.
4. Mount shaft securely in a vise by clamping on the cle-
vis or eye of the shaft. Remove lock nut and piston from
the shaft. Slide head off the shaft.
5. Remove T–ring and O–ring from the piston. Remove
O–ring, back–up ring, rod seal, and dust seal from the
head.
Reassembly
1. Make sure all parts are clean before reassembly.
2. Coat new O–rings, T–ring, rod seal, back–up ring,
and dust seal with clean hydraulic oil.
A. Install T–ring and O–ring on the piston.
B. Install O–ring, back–up ring, and dust seal on the
head.
Greensmaster 3150
IMPORTANT: Do not clamp vise jaws against the
shaft surface. Protect shaft surface before mount-
ing in a vice.
3. Mount shaft securely in a vise by clamping on the cle-
vis or eye of the shaft.
A. Coat shaft with clean hydraulic oil.
B. Slide head onto the shaft. Install rod seal onto
shaft and into head.
C. Install piston and nut onto the shaft. Torque nut
from 24 to 30 ft–lb (33 to 41 Nm).
D. Remove shaft from the vise.
IMPORTANT: Prevent damage when clamping the
hydraulic cylinder into a vise; clamp on the cap end
only. Do not close vise enough to distort the barrel.
4. Mount barrel in a vice.
5. Coat all internal parts with a light coat of clean hy-
draulic oil. Slide piston, shaft, and head assembly into
the barrel being careful not to damage the seals.
6. Clean threads of internal collar and threads in cylin-
der barrel. Apply medium strength thread locking com-
pound (e.g. Loctite #242) to threads of internal collar.
Secure head in the barrel with internal collar using a
spanner wrench. Tighten collar until snug and the outer
end of the collar is flush with end of the barrel.
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Hydraulic System