Wd Manifold Service - Toro Groundsmaster 4000-D Service Manual

4WD Manifold Service

35 ft- -lb
(47 N- -m)
25 ft- -lb
10
(34 N- -m)
4
8
7
3
5
20 ft- -lb
(27 N- -m)
5 ft- -lb
(6.7 N- -m)
1. 4WD manifold body
2. Solenoid valve (port SV)
3. Solenoid coil
4. Check valve (port CV)
5. Nut
NOTE: The ports on the 4WD manifold are marked for
easy identification of components. Example: P1 is a pis-
ton pump connection port and SV is the location for the
solenoid valve (see Hydraulic Schematic in Chapter 10
-- Foldout Drawings to identify the function of the hydrau-
lic lines and cartridge valves at each port).
Hydraulic System
10
13
9
2
10
6. Directional valve (ports PD1 & PD2)
7. Pressure reducing valve (port PR)
8. Relief valve (port RV)
9. Orifice (0.030) (port SV)
13
11
1
11
13
13
UP
FRONT
PLUG TORQUE
#4 Zero Leak: 20 ft- -lb (27 N- -m)
#6 Zero Leak: 25 ft- -lb (34 N- -m)
#8 Zero Leak: 50 ft- -lb (67 N- -m)
Figure 75
NOTE: The 4WD 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 neces-
sary, lightly rap the plug head using a punch and ham-
mer before using an allen wrench to remove the plug:
the impact will allow plug removal with less chance of
damage to the socket head of the plug.
Page 4 - - 98
6
REAR
(67 N- -m)
DOWN
11
12
10. #4 zero leak plug with O- -ring
11. #6 zero leak plug with O- -ring
12. Orifice (0.050) (ports OR1 & OR2)
13. #8 zero leak plug with O- -ring
Groundsmaster 4000--D/4010--D
50 ft- -lb
10
1
11
10