6 Cam Brake Assembly and Installation
ArvinMeritor Maintenance Manual MM-0361 (Revised 04-10)
3. For service instructions for ABS braking systems, refer to
Maintenance Manual 28, Anti-Lock Braking Systems (ABS) for
Trucks, Tractors and Buses, For C Version ECUs; and
Maintenance Manual 30, Anti-Lock Braking Systems (ABS) for
Trucks, Tractors and Buses, For D Version ECUs. To obtain
these publications, refer to the Service Notes page on the front
inside cover of this manual.
Drum and Drive Flange
When you apply some silicone gasket materials, a small
amount of acid vapor is present. To prevent serious personal
injury, ensure that the work area is well-ventilated. Read the
manufacturer’s instructions before using a silicone gasket
material, then carefully follow the instructions. If a silicone
gasket material gets into your eyes, follow the manufacturer’s
emergency procedures. Have your eyes checked by a
physician as soon as possible.
1. Install the drum over the hub pilot. If a flat-head capscrew is
used for retention, fasten the drum to the hub with the
flat-head capscrews. Tighten the capscrews to the correct
torque. Refer to Section 8.
2. Install a felt seal and retainer onto the drive flange.
3. Apply a layer of silicone gasket material to the hub mounting
surface of the drive flange only. Refer to Section 5.
4. Apply Meritor specification number O-617-A or O-617-B wheel
bearing grease to the inside splines of the drive flange and the
splines of the drive shaft.
5. Install the drive flange on the hub and fasten with washers and
capscrews. Tighten the capscrews to the correct torque. Refer
to Section 8.
6. If previously removed, install the hubcap, if used, to the drive
flange. Apply a 0.125-inch (3.18 mm) continuous bead of
silicone gasket material around either the mounting surface of
the hubcap or the drive flange. Refer to Section 5. Tighten the
capscrews to the correct torque. Refer to Section 8.
Cross Tube to the Knuckle
1. Assemble the cross tube end assembly and clamp if these
parts were disassembled. Tighten the locknuts to the correct
torque. Refer to Section 8.
2. Push the stud of the tie rod end through the bottom of the bore
in the knuckle arm tapered hole. Tighten the cross tube nut to
the correct torque. Refer to Section 8.
3. Install the slotted nut and cotter pin assembly.
A. Tighten the nut to the initial torque specified.
B. Advance the nut, do not back it off, to align the cotter pin.
C. Final installed torque must not exceed the maximum
If the final torque exceeds the maximum: Remove
the nut and reinstall it to the correct specification.
If the minimum torque is not met: Check if the stud
taper is showing. If necessary, shim with a 0.125-inch
(3.18 mm) washer.
4. Install the cotter pin.
5. Assemble the wheel, tire and rim, to the drum. Tighten the
wheel nuts to the manufacturer’s specifications.
Steering Stop Setting
All Meritor front drive steer axles are shipped with the steering stop
screws preset at the factory according to the manufacturer’s
specifications. Additional adjustments can be made by the vehicle
manufacturer or end user to accommodate a specific chassis design
or tire size as long as the maximum angle does not exceed the
U-joint capability.
NOTE: Check the adjustments of both axle steering stops and
power steering units every time part of the steering system is
Maximum Turn Angle Setting
NOTE: Do not adjust the turn angle beyond the specifications set by
the vehicle manufacturer.
The maximum turn angle of the U-joint is 35 degrees.
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