Disassembly
Assembly
IMPORTANT: To prevent damage when clamping
cylinderbarrelorrodinavise,clamponly onpivotal
ends.
1. Use a complete repair kit when rebuilding the cylin-
der. Put a coating of clean hydraulic oil on all new seals,
and O--rings.
1.
moving rod and piston 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 O--rings and PTFE seal to the piston rod
and new O--ring, U--cup, and wiper to gland.
3.
Lubricate shaft with clean hydraulic oil. Slide gland
2.
Mount cylinder in a vise so piston rod end of cylinder
and piston onto shaft. Install and tighten lock nut.
is tilted up slightly. Do not close vise so firmly that cylin-
der tube could become distorted. Loosen gland with
spanner wrench.
4.
Put a coating of clean hydraulic oil on all cylinder
parts to ease assembly.
5.
6.
Slide piston rod assembly into cylinder tube.
Install and tighten gland with spanner wrench.
3.
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.
4.
vise and remove lock nut. Remove piston and gland
from rod.
Securely mount piston, piston rod, and gland into
5.
6.
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.
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 piston rod and
piston for evidence of excessive scoring, pitting, or
wear. Replace any damaged parts.
Groundsmaster 4500--D/4700--D
Page 4 -- 117 Rev. C
Hydraulic System (Rev. A)
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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| Tags | Toro Groundsmaster 4500 D, Toro Groundsmaster 4700 D |
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| Document Type | Service Manual |
| Language | English |
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