APRILIA TUONO R FACTORY 2007 Service Station Manual page 29

TUONO R_FACTORY
Check countershaft for wear:
•
main bushings (engine crankcase)
area (17);
wear limits Min. diam. 31.980 mm (1.25905 in).
•
supporting bushing areas (clutch cov-
er) (18);
wear limits Min. diam. 19.990 mm (0.78701 in).
IF THIS MAX. RADIAL CLEARANCE ALLOWED IS EXCEE-
DED, REPLACE THE WORN OUT COMPONENT.
Measure the radial clearance between the (engine
crankcase) main bushings and the related coun-
tershaft (18) areas.
Min. radial clearance allowed 0.060 mm
(0.00236 in).
Radial clearance is derived from the following
values:the maximum inside diameter value of the
(engine crankcase) main bushings minus the di-
ameter value of the related main bushings (18)
areas on the countershaft. Measure the main
bushings (engine crankcase) inside diameter.
IF THIS MAX. RADIAL CLEARANCE ALLOWED IS EXCEE-
DED, REPLACE THE WORN OUT COMPONENT.
Measure the radial clearance between the supporting bushings (clutch cover) and the related counter-
shaft (18) area.
Min. radial clearance allowed 0.060 mm (0.00236 in). Radial clearance is derived from the fol-
lowing values:
the maximum inside diameter value of the (clutch cover) supporting bushings minus the diameter value
of the related supporting bushing (18) area on the countershaft. Measure the supporting bushings
(clutch cover) inside diameter.
CAUTION
AFTER COUPLING THE CRANKCASE HALVES CHECK THE AXIAL CLEARANCE OF THE COUN-
TERSHAFT WITH A COMPARATOR.
Characteristics
CHAR - 29