ENGINE
18
-
Change the shift drum.
-
Check the seating of the shift drum in the grooved ball bearings@).
If the shift drum is not correctly seated:
-
Change the shift drum and/or the grooved ball bearing.
-
Check grooved ball bearing @) for smooth operation and wear.
If the grooved ball bearings are stiff or worn:
-
Change the grooved ball bearing.
-
Check the shift rollers for damage and wear.
If there is damage or wear:
-
Change the shift rollers.
-
Check the springs of shift rails
If the spring is damaged or worn:
-
Change the spring of the shift rail.
8
-
Check the shift rails
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 scoring or wear is present or of the shift fork is stiff:
-
Change the shift rail.
0
-
Check sliding plate
for wear on contact areas
If the sliding plate is worn:
-
Change the sliding plate.
ti)
-
Check return surface
If there is severe grooving:
-
Change the sliding plate.
-
Check guide bolts 4) for firm seating and wear.
If the guide bolts are loose or worn:
-
Change the sliding plate.
18.4.36
Preassembling the shift shaft
8
for damage and wear.
0.
on the sliding plate for wear.
-
Preassemble the shift shaft. (,... p. 163)
-
Check clearance
Shift shaft - sliding plate/shift quad
rant clearance
If the measured value does not meet specifications:
-
-
Secure the short end of the shift shaft in the bench vise.
I
Guideline
Use soft jaws.
-
Mount sliding plate
on the shift quadrant.
-
Mount pressure spring
-
Slide on spring guide @), push return spring
upward, over the spring guide and lift the offset end over abutment bolt (3.
305010-10
-
Mount washer (D.
O
between the sliding plate and the shift quadrant.
Change the sliding plate.
O
with the guide pin facing downward and put the guide pin
8.
0.40 ... 0.80 mm (0.0157 ... 0.0315 in)
8,
with the offset end facing
163