6 Cam Brake Assembly and Installation
ArvinMeritor Maintenance Manual MM-0361 (Revised 04-10)
Figure 6.21
21. Connect the air lines to the brake chambers.
Wheel Bearings Into the Hubs
1. If the wheel studs were removed from the hub, place the hub
into a press with the drum side at the bottom. Align the
grooves on the studs with the grooves in the stud holes in the
hub. Press the studs into position. If a press is not available,
use a brass hammer.
2. Install the inner and outer bearing cups into the hub. Use a
press and sleeve.
3. Fill the bearing cones and hub cavity with the correct grease
until it is level with the inside diameter of the bearing cones.
Refer to Section 7.
4. Install the inner bearing cone into its cup inside the hub.
5. Install a new inner oil seal. Apply a layer of non-hardening
sealing compound to the outside of the seal. Install the seal
into its correct position against the bore. Do not force or hit the
seal after it has touched the bottom of the bore. The seal can
be damaged.
6. On units equipped for ABS, use a suitable driver to install the
ABS tooth wheel onto the hub. Damage to the teeth on the ABS
tooth ring can create an error signal during testing and
operation of the ABS system.
7. Install the oil sleeve onto the spindle with a driver.
8. Install the hub assembly onto the spindle. Be careful the oil
seal is not damaged during installation. Press the hub until the
inner bearing is flat against the face of the spindle.
9. Install the outer bearing cone onto the spindle and push it into
its cup inside the hub.
10. Check the axle lubricant level and fill if required. Refer to
Section 7 for lubricant specifications.
You must manually adjust the brake after you perform
maintenance or service. Do not depend on the automatic
adjusters to remove the excessive clearance created when you
back off the brake during service. The automatic adjusters are
designed to compensate for normal lining wear. Damage to
components and serious personal injury can occur.
Refer to Maintenance Manual 4, Cam Brakes, for complete brake
adjustment procedures. To obtain this publication, refer to the
Service Notes page on the front inside cover of this manual.
Wheel Bearings
When you adjust a wheel bearing, always use the correct
socket wrench to loosen the adjusting nut. Use a torque
wrench to tighten it to the correct specification. Do not attempt
to tighten or loosen an adjusting nut by striking it with a
hammer. Do not place a chisel or drift next to the adjusting nut
and strike the chisel with a hammer.
Damage to the adjusting nut can result, which can prevent you
from obtaining the correct wheel bearing adjustment. An
incorrect adjustment can cause a wheel to separate from the
vehicle during operation. Serious personal injury and damage
to components can result.
1. Use a torque wrench to tighten the adjusting nut to 100 Ib-ft
(136 Nm). Figure 6.22. @
Figure 6.21
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