Groundsmaster 4500--D/4700--D Page 6 -- 11 Axles, Planetaries and Brakes
NOTE: Theplanetaryw heeldriveassemblycanbeser-
viced with the planetary installed to machine. If the
spindle(item1)needstoberemovedfrommachine,see
Planetary Wheel Drive Assembly in this section.
Disassembly (Figs. 7 and 8)
1. Ifplanetarywheeldriveassemblyisinstalledonma-
chine:
A. Park machine on a level surface, lower cutting
decks,stop engine andremovekeyfromtheignition
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. Remove retaining ring (item 17).
3. Removeendcap(item20).Thrustplug(item21)and
thrust washer (item 22) usually remain in end cap bore
and should be r emoved for cleaning and inspection.
4. Remove drive shaft assembly (items 23, 24 and 25)
If necessary, remove r etaining ring and primary gear
from shaft.
5. Remove primary carrier (item 26), secondary gear
(item 27) and secondary carrier (item 28).
NOTE: Steps 6 through 10 are necessary only if in-
specting or replacing bearings and/or seals.
IMPORTANT: Do not reuse retaining ring (item 10)
after it has been removed.
6. Remove retaining ring (item 15) and thrust washer
(item 14). Discard retaining ring.
7. Carefullyremovehousing(item9)fromspindle(item
1). Remove outer bearing cone (item 12).
8. Remove and discard seals (items 2 and 3) and O--
rings (item 13) from housing.
9. Removeinnerbearingcone(item4)fromhousing.If
necessary, remove bearing cups (items 5 and 11) from
housing.
10.If wheel stud (item 6) removal is necessary, use
press to extract stud(s) from housing.
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.
Figure 8
Assembly (Figs. 7 and 8)
1. Thoroughlycleanpartsinsolventanddrycompletely
after cleaning. Inspect parts for damage or excessive
wear and replace as necessary.
2. If any wheel studs were removed, use a press to
install new studs into housing. Make sure that stud
shoulder is fully pressed against housing surface.
NOTE: Use new seal and shim kits when assembling
planetary wheel drive.
3. If spindle and housing were separated:
A. Press bearingcups(items5and11) into housing
(item9).Cups should be pressed fullyto shoulder of
the housing bore.
B. Set innerbearingcone(item 4)intoinnerbearing
cup.
C. Makesurethatsealboreinhousingisthoroughly
cleaned. If OD of seal (item 3) is not rubber or does
nothave a sealant coating, apply light coating of sili-
conesealanttosealboreinhousing.Install sealinto
housing so it is flush with housing face. Lightly
grease seal lips.
D. Packbootseal (item2)withgreaseand installon
housing.
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).
Axles, Planetaries
and Brakes
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