Toro Groundsmaster 4700-D Service Manual page 132

Deck Control Manifold Service (GM 4500- -D)
20 ft- -lb
(27.1 N- -m)
25 ft- -lb
(33.9 N- -m)
5
25 ft- -lb
(33.9 N- -m)
50 ft- -lb
9
(68 N- -m)
1. Manifold body
2. Proportional relief (PRV1 & PRV2)
3. Solenoid coil
NOTE: The ports on the manifold are marked for easy
identification of components (e.g. P1 is a gear pump
connection port and PRV1 is the location for a propor-
tional relief valve). See Hydraulic Schematics in Chap-
ter 9 -- Foldout Drawings to identify the function of the
hydraulic lines and cartridge valves at each port loca-
tion.
Hydraulic System
3
4
2
6
8
4. Relief valve (RV8 & RV9)
5. Logic valve (LC1 & LC2)
6. Pilot piston
7
Figure 81
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 also have an
O--ring as a secondary seal. If zero leak plug removal is
necessary, lightly rap the plug head using a pin 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 head of the plug.
Page 4 - - 98
5 ft- -lb
(6.8 N- -m)
3
25 ft- -lb
2
(33.9 N- -m)
4
(27.1 N- -m)
25 ft- -lb
5
(33.9 N- -m)
6
1
8
7. Nut
8. Zero leak plug (#6)
9. Zero leak plug (#8)
Groundsmaster 4500--D/4700--D
20 ft- -lb
UP
25 ft- -lb
(33.9 N- -m)