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APRILIA RSV4 ABS 2009 Manual page 343

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RSV4 ABS
Check the number engraved on the U
bolts, which must correspond with the
one engraved on the head.
If the U bolts between the two heads
are inverted, camshaft seizure may oc-
cur
IT IS NOT POSSIBLE TO REPLACE ONLY ONE U BOLT, IF
NECESSARY: REPLACE THE ENTIRE HEAD.
Fit the U bolts with the nine O rings and
locator pins.
Install the oil pipe.
Fit the new washers under the screws
(2) near the spark plug holes only.
Tighten the ten screws (1 - 2) working
in stages and diagonally.
Cut the clamp that binds the chain to
the gear.
Position the gear on the camshaft so
that the timing hole and the gear fixing
screw hole are centred with the gear
slot.
Insert the specific timing pin.
Specific tooling
020851Y Camshaft timing pin
Apply Loctite 243 thread lock on the
thread of the timing gear fastener
screw. This screw must be replaced at
each reassembly.
Apply and loosely tighten the gear fix-
ing screw on the camshaft.
Engine
ENG - 343

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