Operation and maintenance manual

4
SM 2147 Rev 1 10-03
Rear Axle Group - Axle Group (Hub)
Section 160-0030
8. Similarly with hub (38), outer face down on bench, fit
seal assembly (37). Ensure that oil seal mounting
diameter in hub (38) is free from dirt and that all edges
in seal mating bore are radiused.
9. Assemble two parts of oil seal (37), i.e. 'O' ring and
metal ring, then fit service tool 15500012 in place on
seal (37) assembly, clamping on metal ring.
10. Fit seal (37) into its bore in hub (38) using even
pressure on service tool 15500012, thus ensuring that
seal is fitted parallel in bore.
Note: To aid in assembly, moisten bore and 'O' ring
with a weak spirit/water mixture.
Ring Gear Unit - Sub Assembly
1. Place hub ring gear (12) on bench, large diameter
face down. Slide outer bearing (10) cone onto hub ring
gear (12), tapping into position with mild steel drift and
hammer.
2. Put planet ring gear (13) on bench, retainer (11)
upward.
3. Using suitable lifting gear, position hub ring gear (12)
over centre of planet ring gear (13). Lower hub ring gear
(12) into open top of planet ring gear (13).
4. Insert retainer (11) into groove in planet ring gear
(13) to retain hub ring gear (12). Ensure it is seated
correctly in groove.
Planet Carrier Unit - Sub Assembly
1. Place planet carrier (19) on bench, large diameter
face uppermost, so that planet gear (5) access hole
faces forward.
2. Insert washer (6) into planet carrier (19), ensuring
lock tab is located in slot cut in planet carrier (19).
3. Smear clean grease into bore of one planet gear (5).
4. Carefully position planet gear (5) on top of previously
located washer (6).
5. Fit other washer (4) onto top of planet gear (5)
locating lock tab on washer into slot cut in planet
carrier (19).
6. Lightly oil 'O' ring (23) and 'O' ring groove in planet
pin (22) with clean gear oil then fit 'O' ring into groove.
7. Carefully insert planet pin (22), 'O' ring uppermost,
work surface for inspection.
4. Clean any residual sealant from faces of axle stub
(29) and axle housing (41).
ASSEMBLY AND INSTALLATION
Numbers in parentheses refer to Fig. 1, unless
otherwise specified.
Note: Prior to assembly, lightly lubricate all parts in
clean gear oil as specified in Section 300-0020,
LUBRICATION SYSTEM, except where other
instructions are given. Pack taper bearings with grease
(Shell Retinax LX or equivalent).
WARNINGS
To prevent personal injury and property
damage, be sure wheel blocks, blocking
materials and lifting equipment are properly
secured and of adequate capacity to do the job
safely.
When necessary to drive on components
during assembly, be sure to use a soft drift to
prevent property damage and personal injury
from flying chips.
Hub Unit - Sub Assembly
1. Place hub (38), small diameter face downward on
clean floor.
2. Position outer bearing (10) cup into hub (38).
3. With suitable lifting equipment, turn hub (38)
completely over so that small diameter face is up.
4. Similarly fit inner bearing (27) cup into hub (38) bore
followed by inner bearing (27) cone.
5. Ensure that oil seal mounting diameter in hub (38) is
free from dirt and that all edges in seal mating bore are
radiused.
6. Assemble two parts of hub/stub face seal (28), i.e.
'O' ring and metal ring, then fit service tool 15500013 in
place on seal assembly (28), clamping on metal ring.
7. Fit seal (28) into its bore in hub (38) using even
pressure on service tool 15500013, thus ensuring that
seal is fitted parallel in bore.
Note: To aid in assembly, moisten bore and 'O' ring
with a weak spirit/water mixture.