NOTE: Theplanetarywheeldriveassemblycanbeser-
viced with the planetary installed to machine. If the
spindle(item1)needstoberemovedfrommachine,see
Planetary Wheel Drive Assembly in this section.
Disassembly (Figs. 11 and 12)
1.
If planetary wheel drive assembly is installed on ma-
chine:
A. Park machine on a level surface, lower cutting
decks, stop engine and remove key from the ignition
switch.
B. Drain oil from planetary wheel drive/brake as-
sembly.
C. Chock rear wheels and jack up front of machine
(see Jacking Instructions in Chapter 1 -- Safety).
Support machine with jack stands.
D. Remove front wheel assembly.
2.
3.
thrust washer (item 22) usually remain in end cap bore
and should be removed for cleaning and inspection.
Remove retaining ring (item 17).
Figure 12
Assembly (Figs. 11 and 12)
Thoroughlycleanpartsinsolventanddrycompletely
after cleaning. Inspect parts for damage or excessive
wear and replace as necessary.
Remove endcap(item20).Thrustplug(item21)and
1.
4.
Remove drive shaft assembly (items 23, 24 and 25)
If necessary, remove retaining ring and primary gear
from shaft.
2.
install new studs into housing. Make sure that stud
shoulder is fully pressed against housing surface.
If any wheel studs were removed, use a press to
5.
Remove primary carrier (item 26), secondary gear
(item 27) and secondary carrier (item 28).
NOTE: Use new seal and shim kits when assembling
NOTE: Steps 6 through 10 are necessary only if in-
planetary wheel drive.
specting or replacing bearings and/or seals.
3.
If spindle and housing were separated:
IMPORTANT: Do not reuse retaining ring (item 10)
after it has been removed.
A. Press bearing cups (items 5 and 11) into housing
(item 9). Cups should be pressed fully to shoulder of
the housing bore.
6.
Remove retaining ring (item 15) and thrust washer
(item 14). Discard retaining ring.
B. Set inner bearing cone (item 4) into inner bearing
cup.
7.
Carefully remove housing (item 9) from spindle (item
Remove outer bearing cone (item 12).
1).
C. Make sure that seal bore in housing is thoroughly
cleaned. If OD of seal (item 3) is not rubber or does
not have a sealant coating, apply light coating of sili-
cone sealant to seal bore in housing. Install seal into
housing so it is flush with housing face. Lightly
grease seal lips.
8.
rings (item 13) from housing.
Remove and discard seals (items 2 and 3) and O--
9.
necessary, remove bearing cups (items 5 and 11) from
housing.
Remove inner bearing cone (item 4) from housing. If
D. Pack boot seal (item 2) with grease and install on
housing.
10.If
press to extract stud(s) from housing.
wheel stud (item 6) removal is necessary, use
E. If ring gear was removed from housing, place
dowel pins (item 10) in housing. Secure ring gear to
housing with lock washers (item 8) and socket head
screws (item 7). Torque socket head screws from
118 to 144 in--lb (13.3 to 16.3 N--m).
11.
If necessary, remove socket head screws (item 7)
withlockwashers(item8)thatsecureringgear(item16)
to housing. Remove ring gear and two (2) dowel pins
(item 10) from housing.
Groundsmaster 5900/5910
Page 6 -- 15
Axles, Planetaries and Brakes
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