Groundsmaster 4100--D/4110--DHydraulic System Page 4 -- 100
4WD Manifold Service
1. Manifold body
2. Solenoid valve (port SV)
3. Solenoid coil
4. Check valve (port CV)
5. Nut
6. Directional valve (ports PD1 & PD2)
7. Pressure reducing valve (port PR)
8. Relief valve (port RV)
9. Orifice (0.030) (port SV)
10. #4 zero leak plug with O--ring
11. #6 zero leak plug with O--ring
12. Orifice (0.050) (ports OR1 and OR2)
13. #8 zero leak plug with O--ring
Figure 69
25 ft--lb
(34 N--m)
35 ft--lb
(47 N--m)
20 ft--lb
(27 N--m)
50 ft--lb
(67 N--m)
5 ft--lb
(6.7 N--m)
FRONT
UP
7
13
10
8
2
3
1
11
9
4
5
13
13
11
10
10
6
12
11
13
10
1
11
10
PLUG TORQUE
#4 Zero Leak: 2 0 ft--lb (27 N --m)
#6 Zero Leak: 2 5 ft--lb (34 N --m)
#8 Zero Leak: 5 0 ft--lb (67 N --m)
DOWN
REAR
NOTE: The ports on the manifold are marked for easy
identification of components. Example: P1 is a piston
pumpconnectionportandSVisthelocationforthesole-
noid valve (see Hydraulic Schematic in Chapter 10 --
FoldoutDrawingstoidentifythefunctionofthehydraulic
lines and cartridge valves at each port).
NOTE: The 4WD manifold uses several zero leak
plugs. These plugs have a tapered sealing surface on
theplugheadthatisdesignedtoresistvibrationinduced
plugloosening.ThezeroleakplugsalsohaveanO--ring
as asecondary seal.Ifzero 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.
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