Chapter 2- Drive System: CVT and Transfer Case
47
3. Check the forward / reverse shift yoke (fork) and
shift collar groove for wear:
3a. Check the thickness of the shift yoke pad
that contacts the shift collar using a
micrometer (preferably) or calipers.
See Figure 2.110.
• The minimum pad thickness on the shift yoke
that moves the forward / reverse shift collar
should be .230” (5.842mm). If it is worn further
there is some chance that the case hardening
will soon be worn through.
3b. Check the forward / 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 2.111.
Figure 2.110
Checking F-N-R
shift yoke
Figure 2.111
Checking F-N-R
shift collar
3c. Inspect the shift shaft for wear on the mat-
ing and seal surfaces.
3d. Check that the snap rings are seated in
their grooves. If removed, replace the
snap rings 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 a 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.
4. Check the low gear shift yoke (fork) and shift col-
lar groove for wear:
4a. Check the thickness of the shift yoke pad
that contacts the shift collar using a
micrometer (preferably) or calipers.
See Figure 2.112.
• The minimum pad thickness on the shift yoke
that moves the forward / reverse shift collar
should be .2225” (5.715mm). If it is worn further
there is some chance that the case hardening
will soon be worn through.
Figure 2.112
Checking low-range shift yoke
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