Hydraulic Gear Pump - Toro Greensmaster 3200 Service Manual

Hydraulic Gear Pump

1. Pump inlet hose
2. Gear pump
3. Hydraulic fitting
4. Hydraulic fitting
5. Hydraulic T–fitting
Removal (Fig. 49)
1. Before removing any parts from the hydraulic sys-
tem, park machine on a level surface, engage parking
brake, lower cutting units, and stop engine.
Operate all hydraulic controls to relieve sys-
tem pressure and avoid injury from pressur-
ized hydraulic oil. Controls must be oper-
ated with the ignition switch in RUN and the
engine OFF. Return ignition switch to OFF
when pressure has been relieved. Remove
key from the ignition switch.
2. Clamp pump inlet hose to prevent draining the hy-
draulic tank.
Hydraulic System
1
7
2
10
3
8
5
11
6. Hose assembly
7. Hose clamp
8. O–ring
9. O–ring
10. O–ring
CAUTION
4
9
6
Figure 49
3. Clean gear pump, hydraulic fittings, and hose as-
sembly connection. Label all hose connections for reas-
sembly purposes. Put caps or plugs on any hose
connections left open or exposed.
4. Loosen hose clamp, and remove pump inlet hose
from the gear pump. Allow hydraulic oil to drain from
hose into a suitable container.
5. Remove hose assembly, hydraulic T–fitting, and O–
rings from hydraulic fittings. Allow hydraulic oil to drain
from hoses into a suitable container.
6. Note position hydraulic fittings for reassembly pur-
poses. Remove hydraulic fittings and O–rings from the
gear pump.
7. Support gear pump. Separate gear pump from the
hydrostat by removing both hex socket head screws and
flat washers. Remove O–ring from between the gear
pump and hydrostat.
Page 5 – 62
13
14
15
12
11. O–ring
12. Hydrostat
13. Hex socket screw
14. Flat washer
15. O–ring
Greensmaster 3200/3200–D