APRILIA 8140172, Service And Repair Manual

Page: 104 / 279

ENGINE
3 - 21
RSV mille
◆
Use a size 14 bent hexagon-head driver to turn the driv-
ing shaft anticlockwise (11) until the piston “1” is at TDC
(ignition).
NOTE
At the TDC (ignition), the reference marks “IN”
(12) and “EX” (13) of the two gears prove parallel to the
head uncoupling surface, and face each other.
NOTE
Have the appropriate special tool
&
(14) to
hand, (cod. 0240 880 threaded pin for retaining the driv-
ing shaft at TDC).
◆ Screw the special tool (14) into the slot previously occu-
pied by the M8 T.C.E.I. screw (9) by hand so that you
can feel it fit perfectly inside the driving shaft fastening
slot.
NOTE
Turn the driving shaft both ways to make sure
that the threaded bolt is engaged perfectly.
The bolt should not be overtightened:
max. 5 Nm (0.5 kgm).
◆ Unscrew and remove the closing screw (15) complete
with seal (16) and remove the complete chain tightener
(17).
◆ Unscrew and remove the two M6 spacer screws (18)
and remove the chain guide bracket (19).
◆ Unscrew and remove the three M6x10 T.C.E.I. screws
(20).
a
WARNING
Before removal, the three T.C.E.I. M6 x 14 screws
(20A) must be marked so that they are refitted in the
right place; danger of major engine damage and
physical injury.
◆
Unscrew and remove the three M6 x 14 T.C.E.I. screws
(20A).
◆ Remove the two gears (21).
◆ Let the timing chain (22) drop into the cylinders chain
compartment.
◆ Pull the chain guide shoe (23) out from above.