forks, sliding clutch sleeves, and washers. Replace worn components as needed.
Figure 8-29
illustrated the checks that should be made to a transfer case planetary gear
assembly. Examine the gears for
worn, cracked, or chipped teeth.
Damaged gears should be
replaced. Check for wear between
gear bushings and the shafts.
Look for wear or damage to the
splines on the shafts and to the
planetary housings. Splines can
strip off so cleanly that splined
surfaces appear to be machined
smooth. This makes it very
important to compare these parts
to specifications.
If used, check the transfer case
blocking rings of the sliding clutch
assembly for wear on the outer
teeth. Also, inspect the areas
where the inner cone ridges
contact the gear cone. Replace
blocking rings showing signs of
wear or damage.
It may be necessary to
disassemble the mainshaft to
inspect the shaft-mounted
components. In the service
manual there may a sectional
view similar to the one shown in
Figure 8-30
which is helpful in
guiding you through the proper
steps in disassembling and
reassembling the mainshaft
without damage or incorrect
assembly.
Check the sliding clutch sleeves
where the shift forks ride. If the
shift forks are equipped with
separate pads at the riding
surfaces as illustrated in
Figure 8-
31
, the pad should be replaced
whenever the transfer case is
disassembled. Replace the entire
shift fork if it is bent or worn.
Seals used in areas where the
shift forks or levers pass through
the case should be replaced.
If the transfer case uses a
Figure 8-30 -
Assembly details of a
transfer case mainshaft.
Figure 8-31 - Checking shift fork for wear.
differential assembly or a viscous coupling, it should be checked for wear and damage.
Always follow the inspection procedures outlined in the factory service manual.
NAVEDTRA 14050A
8-39