Toro 08159SL Groundsmaster 5900 5910 Service Manual

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
Product Specification
CategoriesLawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals
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- 374 pages
Document TypeService Manual
LanguageEnglish
Product BrandToro. Customer Service Representatives are available by phone: Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
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Document File TypePDF
Publishertoro.com
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CopyrightAttribution Non-commercial
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