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Groundsmaster 4500--D/4700--DHydraulic System Page 4 -- 100
Deck Control Manifold Service (GM 4700--D)
1. Manifold body
2. Nut (4 used)
3. Zero leak plug (#6)
4. Zero leak plug (#8)
5. Zero leak plug (#4)
6. Proportional relief (PRV2 & PRV2)
7. Relief valve (RV8, RV9, RV10 & RV11)
8. Solenoid valve (SV1 & SV2)
9. Logic valve (LC1, LC2, LC3 & LC4)
10. Solenoid coil (4 used)
11. Pilot piston (4 used)
Figure 83
UP
1
3
4
5
7
9
10
8
2
8
10
10
11
11
7
7
7
9
3
3
3
2
3
6
6
5 ft--lb
(6.8 N--m)
25 ft--lb
(33.9 N--m)
20 ft--lb
(27.1 N--m)
20 ft--lb
(27.1 N--m)
25 ft--lb
(33.9 N--m)
5 ft--lb
(6.8 N--m)
25 ft--lb
(33.9 N--m)
20 ft--lb
(27.1 N--m)
25 ft--lb
(33.9 N--m)
20 ft--lb
(27.1 N--m)
25 ft--lb
(33.9 N--m)
25 ft--lb
(33.9 N--m)
25 ft--lb
(33.9 N--m)
20 ft--lb
(27.1 N--m)
25 ft--lb
(33.9 N--m)
50 ft--lb
(68 N--m)
NOTE: The ports on the manifold are marked for easy
identification of components (e.g. P1 is a gear pump
connection port and RV8 is the location for a relief
valve). See Hydraulic Schematics in Chapter 9 -- Fold-
out Drawings to identify the function of the hydraulic
lines and cartridge valves at each port location.
NOTE: The deck control manifold uses several zero
leak plugs. These plugs have a tapered sealing surface
on the plug head that is designed to resist vibration in-
duced plug loosening.The zero leak plugs alsohave 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 impactwill allowplug removalwith lesschance
of damage to the head of the plug.