Disassembly (Figs. 82 and 83)
Assembly (Figs. 82 and 83)
IMPORTANT: To prevent damage when clamping
cylinder barrel inavise,clamp only on pivot end.Do
not clamp the vise jaws against the shaft surface.
1. Use a complete repair kit when rebuilding the cylin-
der. Put a coating of clean hydraulic oil on all new seals,
back--up rings, and O--rings.
1.
moving rod in and out of cylinder bore. Plug ports and
clean outside of cylinder.
Pump oil out of cylinder into a drain pan by slowly
2. Install new u--cup, rod wiper, back up ring, and O--
ring ontoeach head.Position O--ring(s),piston ring,and
both wear rings to the piston.
2.
mounting location of cylinder. Do not close vise so firmly
that cylinder barrel could become distorted.
Mount cylinder in a vise by clamping vise on center
3. For serial numbers below 260999999, lubricate
shaft and piston with clean hydraulic oil. Carefully slide
piston onto shaft. Install thread locker on set screw
threads and tighten two set screws to secure piston to
shaft.
3.
Remove the heads from the barrel:
A. For serial numbers below 260999999, loosen
setscrews andremovethreaded capfromeachend
of the cylinder barrel.
4.
draulic oil and carefully slide shaft assembly into cylin-
der barrel.
Lubricate shaft and piston assembly with clean hy-
B. For serial numbers above 270000000, use a
spanner wrench to rotate head clockwise until the
edge of the retaining ring appears in the barrel
opening. Insert a screwdriver under the beveled
edge of the retaining ring to start the retaining ring
through the opening. Rotate the head counter--
clockwise to remove retaining ring from barrel and
head.
5.
and carefully slide them onto shaft and into barrel.
Lubricate head assemblies with clean hydraulic oil
6. Secure heads to barrel:
A. For serial numbers below 260999999, install
andtightenthreadedcaps.Securebothcapstobar-
rel with set screws.
B. For serial numbers above 270000000, align re-
taining ring hole in the head with the access slot in
thebarrel.Inserttheretainingringhookintothehole
and rotate head clockwise until the retaining ring is
completely pulled into the barrel and the ring ends
are covered. Apply silicone sealer to barrel access
slot.
C. Grasp end of rod and use a twisting and pulling
motion to carefully extract rod assembly and head
from cylinder barrel. Remove head from other end
of barrel.
4.
For serial numbers below 260999999, loosen set
screws that secure piston to shaft and carefully remove
piston. Slide head and threaded cap from shaft. Piston
for serial numbers above 270000000 is not removable
from shaft.
5.
Remove and discard all seals, back--up rings,and
O--rings from both heads and piston.
CAUTION
Use eye protection such as goggles when using
compressed air to dry cylinder parts.
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-
7.
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, both
heads,andpistonforevidenceofexcessive scoring,pit-
ting, or wear. Replace any damaged parts.
Greensmaster 3250--D
Page 4 -- 115
Hydraulic System (Rev. I)
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| Tags | Toro Greensmaster 3250 D |
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| Document Type | Service Manual |
| Language | English |
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