Camshaft And Camshaft Bushes - APRILIA RSV mille 956X Service And Repair Manual

RSV mille

3.6.25 CAMSHAFT AND CAMSHAFT BUSHES

Carefully read 0.2.1 (PRECAUTIONS AND GENERAL
INFORMATIONS).
Check the cams (1) for broken material, signs of distor-
tion or wear and, where necessary, replace the cam-
shaft.
Measure the play of the camshafts:
Place the camshafts in the head.
Apply a plastic gauge (2) on the bearing housings of the
camshafts.
Apply the U bolts according to which shaft they are as-
signed to and fasten them with the M6 T.C.E.I. screws.
Driving torque: 10 Nm (1.0 kgm).
Remove the T.C.E.I. screws and the U bolts.
Measure the maximum width of the pressed plastic
gauge with the corresponding graduated scale (3).
Wear limit: max. 0.060 mm.
If the wear limit is exceeded, the bush housings on the
camshafts and on the head must be measured, and the
worn part replaced.
– Camshaft bush housings:
wear limit (4): min. Ø 23.950 mm;
– Head bush housings:
wear limit: max. Ø 24.040 mm;
Insert the intake and exhaust camshafts in the respec-
tive housings in the head and measure the end play
with a comparator.
– End play of the camshafts:
wear limit: max. 0.40 mm.
If the wear limit is exceeded, the axial contact surfaces,
both of the camshafts and in the head, must be meas-
ured and the worn part replaced.
– Axial contact surfaces, (6) camshafts:
wear limit: max. 27.77 mm;
– Axial contact surfaces, (7) head:
wear limit: min. 27.10 mm.
NOTE
If the camshaft is replaced, the buckets must
also be changed.
ENGINE
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