Chapter 2- Drive System: CVT and Transfer Case
48
4b. Check the forward / neutral / reverse shift
collar groove for wear: Use a .035”
(.889mm) feeler-gauge as a go / no-go
tool. If the feeler gauge can be inserted to
the base of the groove in the shift collar,
and the shift yoke is good, replace the
shift collar. See Figure 2.113.
4c. Inspect the shift shaft for wear on the mat-
ing and seal surfaces.
4d. Check that the snap rings are seated in
their grooves. If removed, replace with
new ones.
NOTE: If the shift yoke and collar show wear
from a constant thrust load on the shift shaft
(wear, scoring, or discoloration) the cause of the
damage must be corrected. It may be operator
abuse by applying force to the Hurst gear selec-
tor while the vehicle is in motion, or it may be an
issue with the linkage.
5. The forward, reverse, and low range gears spin
on the middle shaft. Check the bearing contact
surfaces on the middle shaft for wear.
See Figure 2.114.
• Any scratch big enough to catch a fingernail in
indicates that the shaft should be polished or
replaced.
• Replace the shaft if metal transfer, eruption, or
discoloration are evident on any of the bearing
surfaces
• All surfaces should be checked at three spots
and in two directions to confirm that the shaft is
straight and round.
• Check the bearing surfaces with a micrometer
(preferably) or calipers. Wear beyond the speci-
fied measurement may break-through the heat-
treated layer of metal.
Figure 2.113
Checking the F-N-R
shift collar
Figure 2.114
Bearing contact areas
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