Service Manual

Page 21
Planetary Spider Shaft
Inspect the planetary spider shaft for any signs of
wear, burrs, scratches or other damage to the
planetary pinion shafts. Inspect the splines where the
driver is mounted for signs of wear and the snap ring
groove for wear or burrs.
Wheel End Spindle
Inspect the planetary spindle for any damage or
scratches to the bearing journals. The face seal bore
should be inspected to review for scratches to the
seal bore. Light clean up is allowed with emery cloth,
fine file, India stone, or crocus cloth. The spindle bore
and threads should be checked for wear or any
damage for the nut locking system. The spindle
should also be reviewed in the lock plate mating tang
interfaces for any burrs, signs of damage or wear.
The spindle thread for the wheel bearing adjusting nut
should be reviewed for any damage to the threads
that will not allow the spindle adjusting nut to assem-
ble. Minor repair is allowed to this thread by using a
metric thread die or file to repair a damaged thread.
Driver
The driver should be inspected for any signs of wear,
burrs, or damage to the internal splines that attach
to the planetary spider shaft. Burrs may be removed
by use of a light file. Look for any rubbing marks
indicating contact with end of spindle. Any
interference should be removed by grinding
spindle’s tapered inside diameter.
Planetary Nut Lock System
Inspect the wheel bearing adjusting nut, lock plate,
and capscrews for any signs of wear or damage. The
capscrew thread should have the previously applied
thread-locker removed during cleaning, prior inspec-
tion. The capscrews should be replaced if any
damage is noted on the threads. Inspect the tangs
on the lock plate for any signs of wear or damage to
the lock plate capscrew holes.
Planetary Assembly O-Rings
Inspect each O-Ring for any signs of wear, being torn,
pinched, cut, nicked, or swelling. Replace if damage
is noted.
Axle Shafts
Inspect axle shafts for wear and cracks at the shaft
and splines. Replace the axle shafts, if required.
Inspect axle shaft snap ring groove for burrs. Clean
up is permitted by using a light file.
Axle Housing
Inspect the axle housing for any signs of cracks, or
damage from service usage, or stripped threaded
holes.
WARNING
Repair of axle housings by bending or straighten-
ing can cause poor or unsafe vehicle operation
and axle failure. Any axle housing bending or
straightening is Not allowed. Serious personal
injury and damage to components can result.
The housing material for PRC2715, PRC2725,
PRC2726, PROC2715 and PROC2725 axle families
is not suitable for welding. Do not attempt to repair
weld a drive axle. All threads should be cleaned
to remove previously applied thread-locker for
later reassembly.
Axle Trunnion Components
Inspection of both trunnion bracket assemblies
follows the same inspection procedures.
1. Inspect each trunnion bracket for any signs of
wear or scratches to the inner bore surface. Light
scratches may be repaired with emery cloth,
India stone, or crocus cloth.
2. Inspect each bushing for signs of wear or light
scratches on both the inner and outer diameter
surfaces. Light scratches may be repaired with
emery cloth, India stone, or crocus cloth.
3. Inspect each grease seal assembly for nicks, cuts,
torn material, or scratches on the seal lip material,
or any evidence that the seal lips are damaged or
worn. Inspect the seal assembly to check the
spring is not damaged and functions properly.
Inspect the seal guard for damage due to field
usage or disassembly. Should the grease seal
show any evidence that dirt or other contamination
has passed the seal lips, these seals should be
changed for new seal assemblies.
4. Inspect the trunnion adapter and trunnion shaft
components for light scratches to the bore and
journal surfaces. Light scratches may be repaired
with emery cloth, India stone, or crocus cloth.
5. Inspect the thrust washers for any burrs, scratches,
or wear to the flat faces. Light scratches may be
repaired with a fine file, emery cloth, India stone, or
crocus cloth.
6.
Inspect all capscrews and brush to remove
previously applied thread locker and check to
assure the threads are not damaged and the
capscrew heads are not worn.
Wet Brake Assembly Components
Inspect the wet brake components per the following
recommended procedures:
1. Inspect the friction and stationary brake discs for
flatness and wear. The friction disc lining should be
inspected to check for unusual wear. Measure the
thickness of the discs. Overall thickness should not
!
Section 3
Prepare Parts for Assembly