5.
Visually inspect cartridge valve for damaged sealing
7. Reinstall the cartridge valve:
surfaces and contamination.
A. Lubricate new seal kit components with clean hy-
draulic oil and install on valve. The o--rings, sealing
rings, and backup rings must be arranged properly
on the cartridge valve for proper operation and seal-
ing.
A. Contamination may cause valves to stick or hang
up.Contaminationcanbecomelodgedinsmallvalve
orifices or seal areas causing malfunction.
B. If valve sealing surfaces appear pitted or dam-
aged, the hydraulic system may be overheating or
there may be water in the system.
IMPORTANT: Use care when handling the valvecar-
tridge. Slight bending or distortion of the stem tube
can cause binding and malfunction.
CAUTION
B. Thread cartridge valve carefully into manifold
port. The valve should go in easily without binding.
C. Torquecartridgevalveusingadeepsockettoval-
ue identified in manifold illustration.
Use eye protection such as goggles when using
compressed air.
D. If cartridge is solenoid operated, carefully install
solenoid coil to the cartridge valve. Apply “Loctite
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.
242”
or equivalent to the threads ofthe valve. Torque
nut to value identified in manifold illustration.
8.
If problems still exist, remove valve and clean again
or replace valve.
JEM MANIFOLD
10
13
35
ft--lb
13
REAR
DOWN
(47
N--m)
11
6
50
ft--lb
25
(34
ft--lb
N--m)
(67 N--m)
1
0
1
4
10
11
8
7
1
13
13
9
2
10
UP
FRONT
3
5
11
20
(27
ft--lb
N--m)
PLUG TORQUE
10
5
(6.7
ft--lb
#4 Zero Leak: 20 ft--lb (27 N--m)
#6 Zero Leak: 25 ft--lb (34 N--m)
N--m)
11
#8
Zero Leak: 50 ft--lb (67 N--m)
12
Figure 51
1.
2.
3.
4.
5.
Manifold body
Solenoid valve (port SV)
Solenoid coil
Check valve (port CV)
Nut
6.
7.
8.
9.
Directional valve (ports PD1 & PD2)
Pressure reducing valve (port PR)
Relief valve (port RV)
10. #4 zero leak plug with O--ring
11. #6 zero leak plug with O--ring
12. Orifice (.050)
Orifice (.030)
13. #8 zero leak plug with O--ring
Groundsmaster 4000--D
Page 4 -- 69 Rev. E
Hydraulic System (Rev. B)
| Categories | Lawn Mower Manual, Toro Lawn Mower Manual |
|---|---|
| Tags | Toro Groundsmaster 4000 D |
| Download File |
|
| Document Type | Service Manual |
| Language | English |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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