Hydraulic Control Manifold Service: Deck Drive (GM 4700--D)
8
4
(5.4
to 5 ft--lb
to 6.8 N--m)
20 ft--lb
20
(27.1
ft--lb
N--m)
(
27.1 N--m)
7
8
5
5
25
ft--lb
(33.9
N--m)
3
7
25
(33.9
ft--lb
N--m)
4
198
(22.4
in--lb
N--m)
9
9
25
(33.9
ft--lb
N--m)
2
198
(22.4
in--lb
N--m)
9
6
10
75 ft--lb
1
(101.7
N--m)
120
(13.6
in--lb
N--m)
12
9
198 in--lb
(22.4 N--m)
11
165
(18.6
in--lb
N--m)
Figure 72
1.
2.
3.
4.
Manifold body
5.
6.
7.
8.
Relief valve (RV8 and RV9)
Pilot piston
Solenoid coil
Nut
9. Zero leak plug (#6)
10. Zero leak plug (#12)
11. Plug (SAE #4)
Proportional relief solenoid (PRV2)
Solenoid valve (SV2)
Logic valve (LC1 and LC2)
12. Zero leak plug (#4)
NOTE: The ports on the manifold are marked for easy
identification of components. Example: P1 is the gear
pump connection port. (See Hydraulic Schematics to
identify the function of the hydraulic lines and cartridge
valves at each port location).
NOTE: The Groundsmaster 4700--D deck drive man-
ifold uses several zero leak plugs. These plugs have a
tapered sealing surface on the plug head that is de-
signed to resist vibration induced plug loosening. The
zeroleakplugsalsohaveano--ringasasecondaryseal.
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
head of the plug.
For solenoid and control valve service procedures, see
Hydraulic Control Manifold Service: 2 Wheel/4 Wheel
Drive Control in this section. Refer to Figure 72 for car-
tridge valve installation torque.
Groundsmaster 4500--D/4700--D
Page 4 -- 81
Hydraulic System (Rev. A)
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