Hydraulic Control Manifold Service: 4 Wheel Drive - Toro Groundsmaster 4000-D Service Manual

Hydraulic Control Manifold Service: 4 Wheel Drive

EATON/VICKERS MANIFOLD
80 to 90 ft- -lb
(108 to 122 N- -m)
5
4
11
60 to 70 ft- -lb
10
(81 to 95 N- -m)
35 to 40 ft- -lb
(47 to 54 N- -m)
1. Manifold body
2. Solenoid valve (port 2)
3. Seal kit
4. Check valve (port 3)
5. Seal kit
6. Control valve (ports 5A & 5B)
7. Seal kit
8. Relief valve (port 7)
NOTE: The ports on the manifold are marked for easy
identification of components. Example: P1 is a piston
pump connection port and 2 is the location for the sole-
noid valve (See Hydraulic Schematics to identify the
function of the hydraulic lines and cartridge valves at
each port).
NOTE: 4WD manifolds used on Groundsmaster
4000--D machines are either Eaton/Vickers (Fig. 50) or
JEM (Fig. 51).
Valve Cartridge Service
1. Make sure the manifold is clean before removing the
valve.
Hydraulic System (Rev. B)
18
19
12
13
1
17
16
17
16
9
8
2
22
4 to 6 ft- -lb
23
(5 to 8 N- -m)
9. Seal kit
10. Reducing valve (port 8)
11. Seal kit
12. Plug (SAE #2)
13. O- -ring
14. Plug (SAE #4)
15. O- -ring
16. Plug (SAE #5)
(108 to 122 N- -m)
7
16
17
3
20
25 to 30 ft- -lb
(34 to 41 N- -m)
Figure 50
2. If cartridge is solenoid operated, remove nut secur-
ing solenoid to the cartridge valve. Carefully slide sole-
noid off the valve.
IMPORTANT: Use care when handling the valve car-
tridge. Slight bending or distortion of the stem tube
can cause binding and malfunction.
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.
4. Visually inspect the port in the manifold for damage
to the sealing surfaces, damaged threads, and contami-
nation.
Rev. E
Page 4 - - 68
80 to 90 ft- -lb
20
21
18
19
17
16
12
13
17
15
16
14
13
12
21
17. O- -ring
18. Plug (SAE #6)
19. O- -ring
20. Plug (SAE #10)
21. O- -ring
22. Solenoid coil
23. Nut
Groundsmaster 4000--D
6
7