Inspecting Camshafts; Camshaft Toothed Wheel Check; Camshaft Lobes - APRILIA DORSODURO 1200 ABS - ATC Service Station Manual

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Engine
•
Remove the cap from flywheel cover.
•
Turn the crankshaft until the front cyl-
inder piston reaches the TDC (com-
bustion).
•
Unscrew and remove the eight cam
tower screws working in a diagonal se-
quence and in stages.
•
Remove the cam tower.
•
Remove the camshafts with the gears.

Inspecting camshafts

CAMSHAFT TOOTHED WHEEL CHECK

•
Check that the camshaft gear works properly: if it is damaged or does not move smoothly,
replace the timing chain and the camshaft gear.

CAMSHAFT LOBES

•
Check that they do not show blue colouring, cracks or scratches; otherwise, replace the
camshaft, gear and chain.
•
Remove the exhaust camshaft.
•
Position the camshaft on a vice featur-
ing protective shoes.
•
Unscrew and remove the screw and
collect the washer.
ENG - 242
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DORSODURO 1200 ABS - ATC