Hydraulic Control Manifold Service: 4 Wheel Drive - Toro Groundsmaster 4100-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 (4WD)
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 Schematic to identify the
function of the hydraulic lines and cartridge valves at
each port).
NOTE: The Groundsmaster 4100--D four wheel drive
manifold uses several zero leak plugs. These plugs
have a tapered sealing surface on the plug head that is
designed to resist vibration induced plug loosening. The
zero leak plugs also have an o--ring as a secondary seal.
If zero leak plug removal is necessary, lightly rap the
plug head using a punch and hammer before using an
allen wrench to remove the plug: the impact will allow
plug removal with less chance of damage to the socket
Hydraulic System
19 18
18
19
12
13
17
1
18
19
16
17
16
17
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. Zero leak plug (#2)
13. O- -ring
14. Zero leak plug (#4)
15. O- -ring
16. Zero leak plug (#5)
16
15
(108 to 122 N- -m)
14
7
24
16
17
18
19
15
14
3
20
21
25 to 30 ft- -lb
(34 to 41 N- -m)
Loctite #242
Figure 54
head of the plug. When installing plugs, refer to manifold
illustration for plug installation torque.
NOTE: 4WD manifolds used on Groundsmaster
4000--D machines are either Eaton/Vickers (Fig. 54) or
JEM (Fig. 55).
Valve Cartridge Service
1. Make sure the entire outer surface of the manifold is
clean before removing the valve.
2. If cartridge is solenoid operated, remove nut secur-
ing solenoid to the cartridge valve. Carefully slide sole-
noid off the valve.
Rev. E
Page 4 - - 68
80 to 90 ft- -lb
20
21
18
19
17
16
13
12
13
13
12
17
15
16
14
13
12
21
PLUG TORQUE
#2: 41 to 49 in- -lb (4.6 to 5.6 N- -m)
#4: 6 to 10 ft- -lb (8 to 13 N- -m)
#5: 10 to 15 ft- -lb (13 to 20 N- -m)
#6: 15 to 20 ft- -lb (20 to 27 N- -m)
#10: 35 to 40 ft- -lb (48 to 54 N- -m)
17. O- -ring
18. Zero leak plug (#6)
19. O- -ring
20. Zero leak plug (#10)
21. O- -ring
22. Solenoid coil
23. Nut
24. Orifice plug
Groundsmaster 4100--D
6
7