APRILIA V990 Manual page 57

V990 engine
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Carefully read 0.5.1 (PRECAUTIONS AND GENERAL
INFORMATIONS).
N
Remove the drive gear (1) from the driving shaft.
N
Unscrew and remove the three M8 T.E. screws (2) and
detach the lock washers (3).
NOTE
The cylinder and the head are still fitted on the
engine. In order to remove the timing chain (10), the
chain tightener and camshaft gears must be removed,
see 3.5 (DISASSEMBLING REAR CYLINDER, HEAD
AND PISTON).
N
Remove the complete roller bearing flange (4) together
with the two calibrated bushes (5) and spacer bush (6).
N
Remove the chain tightener shoe (7), pulling it out from
above.
N
Remove the two roller bearings (8).
N
Remove the intermediate drive gear (9) and timing
chain (10), pulling both out together downwards.
NOTE
Mark the timing chain (10) with a coloured dot
so that you are sure to refit it with the same direction of
rotation.
N
Remove the washer (11).
Release 00/2001-06
DISASSEMBLING THE ENGINE
3 - 21
- 00