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18
ENGINE
18.4.35 Checking the shift mechanism
-
Check shift forks
at leaf
for wear.
Shift fork
Thickness at leaf
•
If the measured value does not meet specifications:
-
Change the shift fork.
-
Check shift grooves
of shift drum
for wear.
•
If the shift groove is worn:
-
Change the shift drum.
-
Check the seat of the shift drum in grooved ball bearing
•
If the shift drum is not correctly seated:
-
Change the shift drum andlor the grooved ball bearing.
-
Check grooved ball bearing
for smooth operation and wear.
•
If the grooved ball bearing does not move easily or is worn:
-
Change the grooved ball beari ng.
-
Check shift rollers
for surface damage and cracking.
•
If the shift roller exhibits surface damage or cracking:
-
Change the shift drum.
-
Check springs
of the shift rails for damage and wear.
•
If the spring is damaged or worn:
-
Change the spring of the shift rail.
-
Check shift rails
on a flat surface for run-<lut.
•
If there is run-<lut:
-
Change the shift rail.
304687-10
14.85 ... 4.95 mm (0.1909 ... 0.1949 in)
-
Check the shift rails for scoring, seizure marks, and stiffness in the shift fork.
•
If the shift rail has scoring, seizure marks, or does not move easily in the shift fork:
-
Change the shift rail.
-
Check sliding plate
for wear on contact areas
•
If the sliding plate is worn:
-
Change the sliding plate.
-
Check return surface
on the sliding plate for wear.
•
If there is severe grooving:
-
Change the sliding plate.
-
Check guide bolts
for firm seating and wear.
172
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