Disassembly
IMPORTANT: Do not clamp vise jaws against the
shaft surface. Protect shaft surface before mount-
ing in a vice.
1.
pumping the cylinder shaft. Plug both ports and clean
the outside of the cylinder.
Removeoilfromliftcylinderintoadrainpanbyslowly
3. Mountshaftsecurelyinavisebyclampingonthecle-
vis of the shaft.
IMPORTANT: Prevent damage when clamping the
hydraulic cylinder into a vise; clamp on the clevis
only.
A. Coat shaft with with clean hydraulic oil.
B. Slide head onto the shaft. Install rod seal onto
shaft and into head.
2.
Mount lift cylinder in a vice. Remove internal collar
with a spanner wrench.
C. Install piston and nut onto the shaft. Torque nut
from 24 to 30 ft--lb (33 to 41 N--m).
3.
Remove plugs from ports. Extract shaft, head, and
piston by carefully twisting and pulling on the shaft.
D. Remove shaft from the vise.
IMPORTANT: Do not clamp vise jaws against the
shaft surface. Protect shaft surface before mount-
ing in a vice.
IMPORTANT: Prevent damage when clamping the
hydraulic cylinder into a vise; clamp on the clevis
only.
4.
vis of the shaft. Remove lock nut and piston from the
shaft. Slide head off the shaft.
Mountshaftsecurelyinavisebyclampingonthecle-
4.
5.
Mount barrel in a vice.
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.
5.
move o--ring, back--up ring, rod seal, and dust seal from
the head.
Remove Uni--ring and o--ring from the piston. Re-
6.
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.
Assembly
1.
2.
Make sure all parts are clean before assembly.
Coat new o--rings, Uni--ring, rod seal, back--up ring,
7.
Ifcleviswasremovedfromcylindershaft,fullyretract
cylinder shaft and thread jam nut and clevis onto shaft.
Adjust center to center length to dimension shown in
Figure 85 before tightening jam nut.
and dust seal with with clean hydraulic oil.
A. Install Uni--ring and o--ring to the piston.
B. Install rod seal, o--ring, back--up ring, and dust
seal to the head.
10.125”
to 10.500”
(25.72
to 26.67 cm)
Figure 85
Groundsmaster 3500--D
Page 4 -- 117
Hydraulic System (Rev. D)
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