17 ENGINE
If the bearings do not move freely or are worn:
-
Change the bearings.
-
Check the shift rollers for damage and wear.
If there is damage or wear:
-
Change the shift rollers.
-
Check shift rails
8
for run-out on a flat surface.
If there is run-out:
-
Change the shift rail.
-
Check the shift rails for scoring, wear and smooth operation in the shift forks.
If there is scoring or corrosion, or if the shift fork is stiff:
-
Change the shift rail.
-
Check sliding plate
0
in contact areas
(9
for wear.
If the sliding plate is worn:
-
Change the sliding plate.
-
Check return surface
@)
on the sliding plate for wear.
If deep notches are present:
-
Change the sliding plate.
-
Check guide pin 4) for looseness and wear.
If the guide pin is loose and/or worn:
-
Change the sliding plate.
-
Preassemble the shift shaft. (
a
p. 207)
310356-10
17.4.35 Preassembling the shift shaft
I
/
8
0
/
-='
-
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CD
• ✓
/
9
tf
310355-10
-
Check clearance
O
between the sliding plate and the shift
quadrant.
Shift shaft - sliding
plate/shift quadrant
clearance
0.40 ... 0.80 mm (0.0157
... 0.0315 in)
If the measured value does not meet specifications:
-
Change the sliding plate.
-
Secure the short end of the shift shaft in the bench vise.
Guideline
I
Use soft jaws.
-
Mount sliding plate
O
with the guide pin facing downward
and put the guide pin on the shift quadrant .
-
Mount pressure spring (!}.
-
Slide on spring guide 6), push return spring
8,
with the
offset end facing upward, over the spring guide and lift the
offset end over abutment bolt
0.
-
Mount washer 0).
4
207
