Disassembly (Figs. 49 and 50)
Remove the oil from the cylinder by slowly pumping
Reassembly (Figs. 49 and 50)
1.
1. Make sure all parts are clean before reassembly.
the cylinder shaft while holding the cylinder over a drain
pan. Plug both ports and clean the outside of the cylin-
der.
2.
and dust seal with clean hydraulic oil.
Coat new O--rings, T--ring, rod seal, back--up ring,
A. Install T--ring and O--ring on the piston.
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.
B. Install O--ring, back--up ring, and dust seal on the
head.
2.
with a spanner wrench.
Mount lift cylinder in a vice. Remove internal collar
IMPORTANT: Do not clamp vise jaws against the
shaft surface. Protect shaft surface before mount-
ing in a vice.
3.
Extract shaft, head, and piston by carefully twisting
and pulling on the shaft.
3.
Mountshaftsecurelyinavisebyclampingonthecle-
vis or eye of the shaft.
IMPORTANT: Do not clamp vise jaws against the
shaft surface. Protect shaft surface before mount-
ing in a vice.
A. Coat shaft with clean hydraulic oil.
B. Slide head onto the shaft. Install rod seal onto
shaft and into head.
4.
vis or eye of the shaft. Remove lock nut and piston from
the shaft. Slide head off the shaft.
Mountshaftsecurelyinavisebyclampingonthecle-
C. Install piston and nut onto the shaft. Torque nut
from 24 to 30 ft--lb (33 to 41 Nm).
5.
Remove T--ringand O--ringfrom thepiston. Remove
O--ring, back--up ring, rod seal, and dust seal from the
head.
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.
CAUTION
4.
5.
draulic oil. Slide piston, shaft, and head assembly into
the barrel being careful not to damage the seals.
Mount barrel in a vice.
Use eye protection such as goggles when using
compressed air to dry cylinder parts.
Coat all internal parts with a light coat of clean hy-
6.
pressed air. Do not wipe parts dry with paper towels or
cloth. Lint in a hydraulic system will cause damage.
Wash parts in clean solvent. Dry parts with com-
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.
7.
Carefully inspect internal surface of barrel for dam-
age (deep scratches, out--of--round, etc.). Inspect shaft,
head, and piston for evidence of excessive scoring, pit-
ting, or wear. Replace entire cylinder if internal compo-
nents are found to be worn or damaged.
Greensmaster 3150
Page 4 -- 75
Hydraulic System (Rev. E)
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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| Document Type | Service Manual |
| Language | English |
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| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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