Lift Control Manifold Service (Gm4500-D) - Toro Groundsmaster 4500-D Series Service Manual

Lift Control Manifold Service (GM4500-D)

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1. Manifold body
2. Proportional relief valve (port TS)
3. Solenoid valve (port S6)
4. Solenoid coil (2 used)
5. Check valve (port CV)
6. Orifice (0.080)
Hydraulic System: Service and Repairs
7. Zero leak plug (#4)
8. Nut
9. Straight fitting
10. O-ring
11. Nut
12. O–ring
Note: The ports on the lift control manifold are marked for easy identification
of components (e.g. P is the supply connection port and R7 is the location for
the lift relief valve). See
hydraulic lines and cartridge valves at each port location.
Note: The lift control manifold includes several zero leak plugs. These plugs
have a tapered sealing surface on the plug head that is designed to resist
vibration induced 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 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.
Figure 145
13.
14.
15.
16.
Appendix A (page A–1)
Page 5–158
Relief valve (port RV)
Solenoid coil
Nut
Solenoid valve (port S5)
to identify the function of the
Groundsmaster ® 4500-D/4700-D
19245SL Rev A