Section 11: REAR AXLES
PA1553
7
NOTE
Refer to Section 16, "Suspension", for proper
torque tightening of the longitudinal radius rod
support nuts.
NOTE
When the drive alignment is changed, the tag
alignment must also be adjusted.
1.12 AXLE SHAFT SEALING METHOD
The following method is to be used to ensure
that axle shaft installation is fluid-tight:
FIGURE 9: AXLE SHAFT INSTALLATION 11003
1 ................................................... Silicone sealant*
2 .............................................................. Axle shaft
3 ...................................................................Gasket
4 .............................................................Wheel hub
1. Clean the mounting surfaces of both the axle
shaft flange and wheel hub where silicone
sealant will be applied. Remove all old
silicone sealant, oil, grease, dirt and moisture.
Dry both surfaces.
2. Apply a continuous thin bead of silicone
sealant* (Prévost P/N 680053) on the
mounting surfaces and around the edge of all
fastener holes of both the axle shaft flange
and wheel hub.
*
GENERAL ELECTRIC Silicone Rubber Adhesive Sealant
RTV 103 Black.
WARNING
Carefully read cautions and instructions on the
tube of silicone sealant and its packing.
3. Assemble components immediately to permit
the silicone sealant to compress evenly
between parts.
a. Place a new gasket, then install the axle
shaft into the wheel hub and differential
carrier. The gasket and flange of the axle
shaft must fit flat against the wheel hub.
b. Install the tapered dowels at each stud
and into the flange of the axle shaft. Use
a punch or drift and hammer if needed.
c. Install the lock washers and nuts on the
studs. Tighten nuts to the correct torque
value.
NOTE
Torque values are for fasteners that have a
light application of oil on the threads (refer to
Meritor Maintenance Manual).
9/16-18 plain nut: 110 - 165 lbf-ft (149 -224 Nm)
5/8-18 plain nut: 150 - 230 lbf-ft (203 - 312 Nm)
FIGURE 10: TORQUE SPECIFICATION 11030
2. TAG AXLE
The tag axle is located behind the drive axle. It
carries a single wheel and tire on each side.
2.1 RETRACTING TAG AXLE
The standard tag axle retraction system is
controlled by a valve located on the right lateral
console and enables unloading and raising the
tag axle (refer to the "OWNER'S MANUAL" for
location of controls). This system has been
designed for the following purposes:
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