5.
RearWheelRemovalintheServiceandRepairssection
of Chapter 6 -- Chassis).
Removerearwheelassemblyfromthemachine(see
3. Remove plugs from disconnected hydraulic hoses
and wheel motor ports.
4.
Lubricate and install new O--rings to hydraulic fit-
IMPORTANT: DO NOT hit wheel hub, wheel hub
pullerorwheelmotorwithahammerduringremoval
or installation. Hammering may cause damage to
the wheel motor.
tings. Install fittings into wheel motor ports (see Hydrau-
lic Fitting Installation in the General Information section
of this chapter).
5.
Remove caps or plugs placed during removal to pre-
6.
Make sure that hex nut (item 10) that secures wheel
vent contamination.
hub to wheel motor is loosened at least two (2) turns.
Use hub puller (see Special Tools) to loosen wheel hub
from wheel motor.
6.
Using labels placed during the removal process,
properly connect hydraulic hoses to wheel motor fittings
(see Hydraulic Hose and Tube Installation in the Gener-
al Information section of this chapter).
7.
Removeloosenedhexnutandwheelhubfrommotor
shaft. Locate and retrieve square key from wheel motor
shaft.
7.
wheel hub are thoroughly clean.
Make sure that tapers of wheel motor shaft and
8.
rear wheel motor to prevent hydraulic system contami-
nation.
Thoroughlycleanhydraulichoseendsandfittingson
8.
Position square key to keyslot in wheel motor shaft.
IMPORTANT: Do not reuse hex nut that secures
wheelhubtowheelmotorafterithasbeenremoved.
9.
Label all hydraulic hoses for assembly purposes.
Remove hydraulic hoses from fittings on wheel motor.
Allow hoses to drain into a suitable container.
9.
hex nut (item 10).
Place wheel hub on motor shaft and secure with new
10.Remove
move and discard O--rings from fittings.
hydraulic fittings from wheel motor. Re-
10.Install
with six (6) lug nuts.
wheel assembly to the machine and secure
11.
wheel motor ports to prevent system contamination.
Putclean plugs in disconnected hydraulic hoses and
11.
Lower the machine to the ground.
12.Support
ing removal.
thewheelmotortopreventitfromfallingdur-
WARNING
13.Remove
secure wheel motor to the steering spindle.
four (4) cap screws and lock washers that
Failure to properly tighten nut that secures
wheel hub or wheel lug nuts could result in fail-
ure or loss of wheel and may result in personal
injury.
14.Remove
wheel motor from frame.
Installation (Fig. 59)
12.Torque
to 522 N--m).
hex nut (item 10) from 315 to 385 ft--lb (428
IMPORTANT: Because of internal differences in
rear wheel motors, DO NOT interchange rear wheel
motors on machine (i.e. do not put right side motor
on left side of machine). The left side wheel motor
has a yellow identification mark on the motor hous-
ing. If necessary, use parts catalog and part number
on wheel motor to identify RH and LH motors.
13.Torque
N--m).
wheel lug nuts from 70 to 90 ft--lb (95 to 122
14.Make surehydraulic tankisfull.Addcorrectoilifnec-
essary.
1.
sure that ports in wheel motor are facing toward the rear
of the machine.
Position rear wheel motor to steering spindle. Make
15.After assembly is completed, verify that hydraulic
hoses and fittings do not contact anything through full
range of axle motion. Also, check for any hydraulic
leaks.
2.
Secure wheel motor to spindle with four (4) cap
screws and lock washers. Torque screws from 67 to 83
ft--lb (91 to 112 N--m).
Groundsmaster 5900/5910
Page 4 -- 83
Hydraulic System
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