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