Clutch unit: primary gears
Fit the driving gear (B) onto the crankshaft with oil pump control sprocket facing the casing.
Temporarily lock with the washer (6) and the ring nut (5).
Caution
If a new primary driving gear (B) is fitted, check its meshing play.
To check the meshing clearance, temporarily fit the clutch housing (
1
) together with inner spacer (
4
), driven gear
(
A
), roller bearing (
3
) and inner ring (
2
), onto the gearbox primary shaft. Fix a dial gauge to the engine casing and
place pointer tip in contact with a gear tooth.
Turn the driven gear (
A
) to match teething and check with the dial gauge that play ranges between
0.05
and
0.07
mm.
Repeat measurement at 16 positions of the driven gear.
If taken values are outside the allowed tolerance, change the position of the driven gear (
A
) onto the primary shaft
leaving the driving gear (B) on the crankshaft untouched. If play is still outside the limits, change the primary drive
gear pair (
1
).
When finished, fit bush part no.
88713.2422
to a torque wrench, hold sprocket (B) with wrench part no.
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