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Groundsmaster 4000--D/4010--D Hydraulic SystemPage 4 -- 93
Removal (Fig. 66)
1. Park machine on a level surface, lower cutting
decks, stop engine, apply park ing brake and remove
key from the ignition switch.
2. Drain lubricant from rear axle gearbox.
3. Read the General Precautions for Removing and
Installing Hydraulic System Components at the begin-
ning of the Service and Repairs section of this chapter.
4. To prevent contamination of hydraulic system during
axle motor removal, thoroughly clean exterior of motor
and fittings.
5. Disconnect wire harness connector from temperat-
ure sender (item 6) on rear axle motor.
NOTE: To ease installation, label the hydraulic lines to
show their correct position on the axle motor.
6. Disconnect hydraulic lines from motor. Put caps or
plugs on motor fittings and hydraulic line openings to
prevent contamination.
IMPORTANT: Before loosening fasteners that se-
cure rear axle motor, support motor to prevent it
from falling during removal.
7. Remove motor from rear axle using Figure 66 as a
guide.
8. If hydraulic fittings are to be removed from motor,
mark fitting orientation to allow correct assembly. Re-
move fittings from motor and discard O--rings.
9. If necessary, remove temperature sender (item 6)
from r ear axle motor.
10.If necessary, remove pinion gear (item 11) from rear
axle motor shaft.
Installation (Fig. 66)
IMPORTANT: Refer to Traction Circuit Component
Failure in the General Information section of this
chapter forinformation regarding the importance of
removing contamination from the traction circuit.
1. If fittings were removed from axle motor, lubricate
and place new O--rings onto fittings. Install fittings into
port openings using marks made during the removal
process to properly orientate fittings. Tighten fittings
(see Hydraulic Fitting Installation in the General Infor-
mation section of this chapter).
2. If temperature sender (item 6) was removed from
rear axle motor, thread sender into motor port. Torque
sender from 9to11ft--lb(12.3to14.9N--m).
3. If removed,install piniong ear (item 11) toaxle motor.
Make sure that retaining rings are fully seated into the
grooves of the motor shaft.
4. Install O--ring (item 9) onto motor. Position motor to
rearaxle assemblyandalign gearteeth.Slide motorinto
place.
5. Secure motor to axle with cap screws and flat wash-
ers.
6. Remove plugs from motor fittings and hydraulic line
openings. Using labels placed during motor removal,
correctly attach hydrauliclines toaxle motor fittings(see
Hydraulic Hose and Tube Installation in the General In-
formation section of this chapter).
7. Secure wire harness connector to temperature
sender (item 6) on rear axle motor.
8. Fill rear axle gearbox with SAE 85W--140 weight
gear lube. Gearbox capacity is approximately 16 fl. oz.
(0.47 liters).
9. Fill reservoir with hydraulic fluid as required.
10.Properly fill hydraulic system (see Charge Hydraulic
System in this section).
11.After assembly is completed, verify that hydraulic
lines and fittings do not contact anything.
Hydraulic
System