Toro Greensmaster 3250-D 04383 Service Manual page 100

9. Pull gear pump (28) and connected hoses assem-
blies (27 and 38) away from the hydrostat (45) and se-
cure.
10. Remove hose assemblies (25, 26, and 29) and O--
rings (6 and 16) from the hydraulic fittings (3 and 17). Al-
low hoses to drain into a suitable container.
11. Remove hydraulic fittings (3 and 17) and O--rings (2
and 20) from the hydrostat (45).
12. Loosen both set screws (5) on the pump hub (4)
enough to allow the hydrostat (45) shaft to be removed.
CAUTION
Support the hydrostat when removing its sup-
porting fasteners to prevent it from falling and
causing personal injury.
13. Remove both lock nuts (14), cap screws (15), and
flat washers (19) from the hydrostat (45) flange and
pump plate (46).
14. Separate hydrostat (45) from the pump plate (46)
and pump hub (4). Remove key (47) from the hydrostat
shaft.
Installation (Fig. 30)
1. Make sure the inside of the pump hub (4) is clean.
Apply antiseize lubricant to both the hydrostat (45) shaft
and the inside of the pump hub.
2. Coat key (47) with petroleum jelly and insert it into
the hydrostat (45) shaft. Position hydrostat to the pump
plate (46) and pump hub (4). Slide the shaft into the hub
with the key.
3. Secure the hydrostat (45) to the pump plate (46)
with both cap screws (15), flat washers (19), and lock
nuts (14).
4. Apply Loctite #242 (or equivalent) to threads of both
square head screws (5). Install screws (5) in pump hub
(4) to secure hub to pump shaft. Torque screws from 90
to 110 in- -lb (10.2 to 12.4 N- -m).
5. Lubricate all new O--rings with clean hydraulic fluid.
6. Install new O--rings (2 and 20) and hydraulic fittings
(3 and 17) to the hydrostat.
7. Inspect threads and sealing surfaces of hydraulic fit-
tings and hydraulic hose connectors. Replace any dam-
aged or worn fittings or connectors.
Hydraulic System (Rev. I)
SUCTION PORT
8. Install O--rings (6 and 16) and hose assemblies (25,
26, and 29) to the hydrostat (45) and hydraulic fittings (3
and 17).
IMPORTANT: Failure to remove the plug will cause
excessive pressure in the hydrostat and damage
seals.
9. Remove plug from the suction port on the gear
pump (Fig. 34).
10. Install gear pump to the hydrostat (see Hydraulic
Gear Pump Installation).
11. Remove clamp from pump inlet hose (24).
12. Position neutral system assembly to the hydrostat
(45). Secure assembly to the hydrostat by securing the
cable support to the hydrostat with both cap screws (Fig.
33).
13. Fasten and tighten cap screw and pivot washer to
the camplate shaft of the hydrostat. Connect extension
spring to the neutral arm (Fig. 32).
14. Connect extension spring with dampener to the
spring bracket (Fig. 31).
15. Check neutral position of the traction pedal. If ad-
justment is required, see Adjust Transmission for Neu-
tral.
Page 4 - - 62
Figure 34
Greensmaster 3250--D