Lift Control Manifold Service (Gm4700-D) - Toro Groundsmaster 4500-D Series Service Manual

Lift Control Manifold Service (GM4700-D)

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1. Manifold body
2. Nut
3. Zero leak plug (#4)
4. Relief valve (port R1)
Hydraulic System: Service and Repairs
5. Proportional relief valve (port TS)
6. Solenoid valve (ports S2, S3, S7,
S8)
7. Solenoid valve (port S1)
8. Solenoid valve (ports S4, S6, S9)
Note: The ports on the lift control manifold are marked for easy identification of
components (e.g. P is the gear pump connection port and R1 is the relief valve
port). See Appendix A (page A–1)
and cartridge valves at each port location.
Note: The lift control manifold uses 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 146
10.
11.
12.
to identify the function of the hydraulic lines
Page 5–160
9. Solenoid valve (port S5)
Solenoid coil (5 used)
Solenoid coil (5 used)
Nut
Groundsmaster ®
19245SL Rev A
4500-D/4700-D