Valve Cartridge Service
Make sure the entire outer surface of the manifold is
5. Clean cartridge valve using clean mineral spirits.
Submerge valve in clean mineral spirits to flush out con-
tamination.Particlesasfineastalcumpowdercanaffect
the operation of high pressure hydraulic valves. If car-
tridgedesignallows,useawoodorplasticprobetopush
the internal spool in and out 20 to 30 times to flush out
contamination. Be extremely careful to not damage car-
tridge. Use compressed air for cleaning.
1.
clean before removing the valve.
2.
ing solenoid coil to the cartridge valve. Carefully slide
solenoid coil off the valve.
If cartridge is solenoid operated, remove nut secur-
IMPORTANT: Use care when handling the valvecar-
tridge. Slight bending or distortion of the stem tube
can cause binding and malfunction.
6.
Reinstall the cartridge valve:
A. Lubricate new seal kit components with clean hy-
draulic oil and install on valve. The O--rings, sealing
ringsandbackupringsmustbearrangedproperlyon
the cartridge valve for proper operation and sealing.
3.
Remove cartridge valve with a deep socket wrench.
Note correct location for O--rings, sealing rings and
backup rings. Remove and discard seal kit.
IMPORTANT: Use care when handling the valve
cartridge. Slight bending or distortion of the
stem tube can cause binding and malfunction.
4.
Visually inspect the port in the manifold for damage
to the sealing surfaces, damaged threads and contami-
nation. Also, inspect cartridge valve for damaged seal-
ing surfaces and contamination.
B. Thread cartridge valve carefully into manifold
port. The valve should go in easily without binding.
A. Contamination may cause valves to stick or hang
up.Contaminationcanbecomelodgedinsmallvalve
orifices or seal areas causing malfunction.
C. Torquecartridgevalveusingadeepsockettoval-
ue identified in manifold illustration.
B. If valve sealing surfaces appear pitted or dam-
aged, the hydraulic system may be overheating or
there may be water in the system.
D. If cartridge is solenoid operated, carefully install
solenoid coil to the cartridge valve. Torque nut to val-
ue identified in manifold illustration. Over--tightening
may damage the solenoid or cause the valve to mal-
function.
CAUTION
7.
If problems still exist, remove valve and clean again
or replace valve.
Use eye protection such as goggles when using
compressed air.
Groundsmaster 5900/5910
Page 4 -- 89
Hydraulic System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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| Tags | Toro Groundsmaster 5900, Toro Groundsmaster 5910 |
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| Document Type | Service Manual |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
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