APRILIA 8140172, Service And Repair Manual

Page: 181 / 279

ENGINE
RSV mille
3 - 98
◆
Insert the two locating dowels (9) in the cylinder.
a
CAUTION
Use a new head gasket.
◆ Fit the head gasket (10) in place.
◆ Place the preassembled head in the cylinder and tight-
en it on with the four shouldered T.E. screws (11).
– Non-painted cylinder version
Driving torque of screws (11):
28-30 Nm (2.8-3.0 kgm)
– Painted cylinder version
Driving torque of screws (11):
25-28 Nm (2.5-2.8 kgm)
◆ Apply a coat of LOCTITE
®
574 on the casing around
the gasket surface of the cylinder base gasket in the
area of the line separating the two sections of the cas-
ing.
◆ Apply the cylinder base gasket on the casing.
◆ Oil the piston and the respective piston rings.
◆ Turn the piston rings so that the meeting ends of the
three rings are staggered by approx. 120°.
NOTE
Have the appropriate special tool
&
(12) to
hand (cod. 8140186 - piston ring compression tool).
◆ Lower the ring compressor (12) or piston ring pliers
over the piston to preload the piston rings.
◆ Place the chain tightener shoe (13) in the chain com-
partment of the cylinder (14) and push the cylinder over
the piston so that the ring compressor is pushed down.
◆ Remove the ring compressor (12).
◆ Insert the timing chain (15) through the cylinders chain
compartment.
NOTE
The timing chain can be guided inside using an
O-ring or similar device to aid assembly.
◆ Place the cylinder (14) on the engine casing, pushing it
in all the way.
◆ Oil the thread of the stud bolts (2) and the contact sur-
faces.
NOTE
Screw on the M10 T.E. nuts (16) and M6 T.C.E.I.
screws (17) evenly and gradually, working in a crisscross
pattern.
◆ Secure the cylinder together with the head with the four
M10 T.E. nuts (16) and two M6 T.C.E.I. screws (17).
Non-painted head version:
– four M10 T.E. nuts (16), driving torque 58 Nm (5.8
kgm);
– two M6 T.C.E.I. screws (17), driving torque 12 Nm
(1.2 kgm).
Painted head version:
– two M10 T.E. nuts (16), external, driving torque 50-
55 Nm (5.0-5.5 kgm);
– two M10 T.E. nuts (16), chain compartment side,
driving torque 58 Nm (5.8 kgm);
– two M6 T.C.E.I. screws (17), driving torque 12 Nm
(1.2 kgm).