16 ENGINE 146
–
Check the seat of the shift drum in bearings
.
» If the shift drum is not seated correctly:
– Change the shift drum and/or the bearing.
–
Check bearing
for stiffness and wear.
» If the bearings do not move freely or are worn:
– Change the bearings.
–
Check needle bushing
for stiffness and wear.
» If the needle bushing does not move freely or is worn:
– Change the needle bushing.
–
Check shift rail
on a flat surface for run-out.
» If there is run-out:
– Change the shift rail.
– Check the shift rail for scoring, signs of corrosion, and stiffness in the shift forks.
» If there is scoring or corrosion, or if the shift fork is stiff:
– Change the shift rail.
–
Check sliding plate
in contact areas
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
for looseness and wear.
» If the guide pin is loose and/or worn:
– Change the sliding plate.
– Preassemble the shift shaft. ( p. 146)
305598-10
–
Check play
between the sliding plate and the shift quadrant.
Shift shaft - play in sliding plate/shift
quadrant
0.40… 0.80 mm (0.0157…
0.0315 in)
» If the measured value does not equal the specified value:
– Change the sliding plate.
16.4.33 Preassembling the shift shaft
305599-10
– Fix the short end of the shift shaft in a vise.
Guideline
Use soft jaws.
–
Mount sliding plate
with the guide pin facing down and attach the guide pin to
the shift quadrant.
–
Mount pressure spring
.
–
Push on spring guide
, push return spring
over the spring guide with the
offset end facing upward and lift the offset end over abutment bolt
.
–
Mount stop disk
.
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