Toro Greensmaster 3250-D 04383, Руководство по обслуживанию

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Greensmaster 3250--D Hydraulic System (Rev. I) Page 4 -- 73
Installation
1. Lubricate new O--rings with clean hydraulic fluid.
Install O--rings and hydraulic fittings to the valve body.
2. Secure valve body to the mounting plate with cap
screws, flat washers, and lock nuts.
3. Install O--rings and hose assemblies to hydraulic fit-
tings. Tighten hose connections.
Disassembly
1. Unscrew relief valve cartridge from the relief valve
body. Remove O--rings and back--up ring.
2. Inspect ports of the relief valve body for damaged
sealing surfaces and threads and contamination.
3. Inspect relief valve cartridge for damaged sealing
surfaces and contamination.
A. Contamination may cause valves to stick or
hang up. Contamination can become lodged in
small valve orifices or seal areas causing malfunc-
tion.
B. If sealing surfaces appear pitted or damaged,
the hydraulic system may be over heating or there
may be water in the system.
CAUTION
Use eye protection such as goggles when using
compressed air.
4. Clean relief valve cartridge using clean mineral spir-
its to flush out any contamination. Submerge cartridge
in clean mineral spirits to flush out contamination. Par-
ticles as fine as talcum powder can affect the operation
of high pressure hydraulic valves. Use compressed air
for cleaning.
Reassembly
1. Lubricate new O--rings and back--up ring with clean
hydraulic fluid. Install O--rings and back--up ring to the
relief valve cartridge.
2. Screw relief valve cartridge into the relief valve
body. Torque cartridge to 20 ft--lb (27 N--m) .
3. Lubricate new O--rings with clean hydraulic fluid.
Connect hydraulic fittings and O--rings to the relief valve
body.
Hydraulic System