Timing Drive Assembly - APRILIA RSV mille 956X Service And Repair Manual

ENGINE

3.6.22 TIMING DRIVE ASSEMBLY

a
CAUTION
Set the cylinder "1" and "2" timing drive assemblies
aside in distinct groups so that you are sure to refit
the parts in the same housing when it comes to reas-
sembly.
Check the sides of the timing gear (1), drive gears (2)
and intermediate drive gears (3) for broken materials or
distortion.
Check the slots of the idler gears (3) for wear.
Wear limit (4) max. 20.015 mm.
Check the roller bearings (5) for wear.
Check the two bearing flanges (6) for wear around the
sliding area of the roller bearings (5).
Wear limit (7) max. 15.98 mm.
Check the chain guide shoe (8), chain tightener shoe
(9), chain guide (10) and chain guide bracket (11) for
any traces of rolling.
Max. depth of the rolling traces: 1.2 mm.
Check the teeth of the two timing chains (12) for any
signs of distortion.
Check the length of the timing chain (13) over a dis-
tance of 20 pins.
Wear limit max. 166.2 mm.
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