4WD Manifold Service (Fig. 75)
Makesurethemanifoldiscleanbeforeremovingany
7. The 4WD manifold includes three (3) orifice fittings
(items 9 and 12). The 0.030 orifice (item 9) is positioned
in the SV port under the solenoid cartridge valve. The
1.
of the cartridge valves.
0.050
orifices (item 12) thread into the manifold in ports
OR1 and OR2. Before removing or installing the orifice
in OR1, removal of the #6 plug in the bottom of the man-
ifold is necessary.
2.
securing solenoid to the cartridge valve. Carefully slide
solenoid off the valve.
If cartridge valve is solenoid operated, remove nut
8.
Reinstall the cartridge valve:
IMPORTANT: Use care when removing cartridge
valves. Slight bending or distortion of the stem tube
can cause binding and malfunction. Make sure that
deep well socket fully engages the valve base.
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 well socket.
Note correct location for O--rings, sealing rings and
backup rings. Remove and discard seal kit.
IMPORTANT: Use care when installing cartridge
valves. Slight bending or distortion of the stem
tube can cause binding and malfunction. Make
sure that deep well socket fully engages the
valve base.
4.
Visually inspect the port in the manifold for damage
tothesealingsurfaces,damagedthreads orcontamina-
tion.
B. Lubricate threads of cartridge with clean hydrau-
lic oil. Thread cartridge valve carefully into manifold
port. The valve should go in easily without binding.
5.
surfaces and contamination.
Visually inspect cartridge valve for damaged sealing
A. Contamination may cause valves to stick or hang
up.Contaminationcanbecomelodgedinsmallvalve
orifices or seal areas causing malfunction.
C. Torque cartridge valve using a deep well socket
to value identified in manifold illustration.
D. If cartridge is solenoid operated, carefully install
solenoid coil to the cartridge valve. Torque nut to val-
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.
9.
If problems still exist, remove valve and clean again
or replace valve.
CAUTION
Use eye protection such as goggles when using
compressed air.
6.
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 not to damage car-
tridge. Use compressed air for cleaning.
Groundsmaster 4000--D/4010--D
Page 4 -- 99
Hydraulic System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro Groundsmaster 10176SL, Toro Groundsmaster 30446, Toro Groundsmaster 30448, Toro Groundsmaster 4010 D |
| Download File |
|
| Document Type | Catalog |
| Language | English |
| Product Brand | Toro. 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)
Canada 1-888-225-4886 USA 1-888-384-9939, Lawn Mower |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
(0 votes, average: 0 out of 5)