APRILIA RSV4 Factory a-PRC 2009 Service Station Manual page 428

FINAL DRIVE UNIT BEARINGS

Carry out the check with the bearings fitted on the

final drive unit.

ROTATION CHECK

Remove the left spacer (3).

Remove the right spacer (4).

Manually rotate the inside ring of each

bearing. Rotation must be constant,

smooth and noiseless.

If one or both bearings do not fall within the control

Replace both bearings of the final drive

RADIAL AND AXIAL CLEARANCE CHECK

Check the radial and axial clearance. Axial clearance: a minimum axial clearance is allowed.

Radial clearance: none.

If one or both bearings do not fall within the control parameters:

Replace both bearings of the final drive unit.

FLEXIBLE COUPLING

Check that the flexible couplings (5) are not dam-

aged or excessively worn.

Fit the entire final drive unit (6) to the

Manually rotate the sprocket (7) to right

and left, and check the clearance be-

tween the flexible couplings (5) and

their holder (8).

If there is excessive clearance:

Replace all the flexible couplings (5).

ALWAYS REPLACE ALL THE FLEXIBLE COUPLINGS

WITH OTHERS OF THE SAME TYPE.

RSV4 Factory a-PRC