4WD Manifold Service
10
13
35
(47
ft--lb
N--m)
13
6
REAR
DOWN
50
ft--lb
11
(67 N--m)
25
(34
ft--lb
N--m)
10
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 75
1.
2.
3.
4.
5.
4WD manifold body
Solenoid valve (port SV)
Solenoid coil
Check valve (port CV)
Nut
6.
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 (0.050) (ports OR1 & OR2)
13. #8 zero leak plug with O--ring
7.
8.
9.
Orifice (0.030) (port SV)
NOTE: The ports on the 4WD manifold are marked for
easy identification of components. Example: P1 is apis-
ton pump connection port and SV is the location for the
solenoid valve (see Hydraulic Schematic in Chapter 10
NOTE: The 4WD manifold uses several zero leak
plugs. These plugs have a tapered sealing surface on
theplugheadthatisdesigned toresistvibrationinduced
plugloosening.ThezeroleakplugsalsohaveanO--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.
--
FoldoutDrawingstoidentifythefunctionofthehydrau-
lic lines and cartridge valves at each port).
Hydraulic System
Page 4 -- 98
Groundsmaster 4000--D/4010--D
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