SECTION 13: WHEELS, HUBS & TIRES
DOB 2490-2789 | X3-45 Commuter PA1605 Maintenance Manual (Final Version
‒
Rev.2 April 2016)
13
7.
Check the bearing end play as described in
8.1 FRONT AXLE Hub Bearing Inspection
8.
Stake the hub nut by deforming with a round
nosed chisel.
9. Clean hub bearing, rotor and hub flange
clamping surfaces using EFX degreaser.
FIGURE 21: CLEANING HUB BEARING, ROTOR AND
HUB FLANGE CLAMPING SURFACES
10.
Install rotor onto hub bearing.
11. Add some grease (25-50 ml) (Fuchs
Renolite LX PEP-2) (Prevost #685325) into
the bottom of the hub flange cap. Mount hub
flange onto rotor.
12.
Secure hub flange and rotor to unitized hub
bearing using 14 hub flange cap screws.
Torque to 183±9 lbf-ft. Refer to FIGURE 23
for tightening sequence.
NOTE: discard
bolts that start to show signs of
deformation in the threaded area or
beneath the head of the bolt.
13. Once the hub flange has been correctly
fitted; it is necessary to check the axial run
out of the brake disc. Refer to page No.B29
of the following manual: included on your
vehicle Technical Publications CD in PDF
format to complete this step:
Dana Parts & Service Instructions S84U
Steer Axle HUB BEARING REWORK_
Manual NO 1963 A+B iss A
FIGURE 22: HUB FLANGE HEX CAP SCREW
FIGURE 23: HUB FLANGE HEX CAP SCREW
TIGHTENING SEQUENCE
14.
Mount the wheel over studs, being careful
not to damage stud threads.
15.
Screw in the hex stud nuts (refer to Figure 2
for sequence) so that wheel will position
itself concentrically with hub. This is
important, otherwise wheel may be eccentric
with hub and will not run straight. In this
initial step, slightly tighten the nuts to
correctly position the wheel.
16.
Tighten stud nuts progressively as shown in
Erreur ! Source du renvoi introuvable.
.
The final tightening should be done with a
torque wrench. Tighten stud nuts to
450 - 500 lbf-ft (610 - 680 Nm) for aluminum
as well as steel wheel.
9. DRIVE AXLE WHEEL HUBS
Drive axle wheels hubs feature a compact
bearing design. (Figure 24)
FIGURE 24: COMPACT BEARING
1 = Hub
