Disassembly
2. Install new O--rings and PTFE seal to the piston rod
and new O--ring, U--cup, and wiper to gland.
1.
Pump oil out of cylinder into a drain pan by SLOWLY
moving rod and piston in and out of cylinder bore. Plug
ports and clean outside of cylinder.
3. Lubricate shaft with clean hydraulic oil. Slide gland
and piston onto shaft. Install and tighten lock nut.
IMPORTANT: To prevent damage when clamping
cylinderbarrelorrodinavise,clamponly onpivotal
ends. Use of a vise with soft jaws is recommended.
4. Put a coating of clean hydraulic oil on all cylinder
parts to ease assembly.
5.
6.
Slide piston rod assembly into cylinder tube.
2.
Mount cylinder in a vise so piston rod end of cylinder
is tilted up slightly. Do not close vise so firmly that cylin-
der tube could become distorted.
Mount lift cylinder in a vise with soft jaws. Secure
gland (head) in barrel:
A. On cylinders without a retaining ring slot in the
barrel (Fig. 82), use a spanner wrench to tighten
gland into barrel.
3.
Loosen gland (head) from barrel:
A. On cylinders without a retaining ring slot in the
barrel (Fig. 82), use a spanner wrench to loosen and
remove gland from barrel.
B. On cylinders with a retaining ring (Fig. 83), align
retaining ring hole in the head with the access slot in
the barrel. Insert the retaining ring hook into the hole
and rotate head clockwise until the retaining ring is
completely pulled into the barrel and the ring ends
are covered.
B. On cylinders with a retaining ring (Fig. 83), use a
spanner wrench to rotate head clockwise until the
edge of the retaining ring appears in the barrel open-
ing. 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.
1
4.
ing motion to carefully extract piston, piston rod, and
gland from cylinder tube.
Grasp end of piston rod and use a twisting and pull-
IMPORTANT: Do not clamp vise jaws against
smooth piston rod surface; the piston rod will be-
come damaged.
5.
vise and remove lock nut. Remove piston and gland
from rod.
Securely mount piston, piston rod, and gland into
3
2
6.
7.
pressed air. Do not wipe parts dry with paper towels or
cloth. Lint in a hydraulic system will cause damage.
Remove all seals and O--rings.
Figure 83
Wash parts in clean solvent. Dry parts with com-
1.
2.
Barrel
Gland (head)
3.
Retaining ring
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 piston rod and
piston for evidence of excessive scoring, pitting, or
wear. Replace any damaged parts.
Assembly
1.
der. Put a coating of clean hydraulic oil on all new seals,
and O--rings.
Use a complete repair kit when rebuilding the cylin-
Groundsmaster 4000--D
Page 4 -- 107 Rev. E
Hydraulic System (Rev. B)
| Categories | Lawn Mower Manual, Toro Lawn Mower Manual |
|---|---|
| Tags | Toro Groundsmaster 4000 D |
| Download File |
|
| Document Type | Service Manual |
| Language | English |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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