Toro Groundsmaster 5900 Series Service Manual page 195

Piston (Traction) Pump Removal
Groundsmaster ® 5900 & 5910
16227SL Rev B
(Figure
3. Remove drain plug from the hydraulic reservoir and drain reservoir into
a suitable container.
4. To prevent contamination of hydraulic system during removal, thoroughly
clean exterior of pump assembly.
g287906
1. Piston pump
2. Forward solenoid coil (S1)
5. Label wire harness connectors that attach to the two (2) solenoid coils on
left side of piston pump
solenoid coils on piston pump.
6. Read the General Precautions for Removing and Installing Hydraulic System
Components (page
7. For installation purposes, label all hydraulic lines that connect to gear pump
and piston pump.
8. Put a drain pan below the pump assembly. Remove hydraulic hoses
connected to piston and gear pump fittings. Put plugs or caps on
disconnected hydraulic hoses and fittings to prevent contamination of the
system.
9. Remove gear pump from machine (see
Make sure piston pump is properly supported before removing
the pump mounting screws. Piston pump assembly weighs
approximately 51 kg (110 lb).
10. Attach hoist to piston pump to support pump and allow safe removal of
pump from machine.
11. Remove four (4) cap screws and washers retaining pump assembly to engine
flywheel plate. Carefully pull pump assembly from flywheel plate and pump
adapter plate (coupler), then lower the pump out of the machine.
87) (continued)
1
Figure 88
3. Reverse solenoid coil (S2)
(Figure 88). Disconnect harness connectors from
5–73).
Gear Pump (page
CAUTION
Page 5–95
2
3
5–86)).
Hydraulic System: Service and Repairs