MV Agusta 2008 F4 312RR 1078, Workshop Manual

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D
Crankcase
Disassembling connecting rod
Remove the driveshaft following the suggested proce-
dure.
Position the shaft with the connecting rod downwards.
Work on each connecting rod separately.
Loosen the two screws that tighten the cap of the con-
necting rod and the head of the rod.
Remove the two screws that sustain the connecting
rod stem. Move the two motor drive shaft parts away.
Reassemble each connecting rod before
working on the next one.
Removing semi bearings
Disassemble the connecting rod following the sug-
gested procedure.
Unscrew the screws and remove the semi bearings
from the cap and head of the connecting rod.
Coupling semi bearings-connecting rod pin
If no substitutions have been made it is sufficient to
verify the connecting rod measurement and its pins
and refer to the chart included, choose the semi bear-
ings according to the colour.
The measurement has to be carried out on the princi-
pal axle of the stem, after having tightened at 35 N·m.
If substitution of one or more parts is necessary, it is
sufficient to follow the indications of the letter indicat-
ing the class that the connecting rod and bushing
belong to, indicated on them.
Assembling semi bearings
Insert the semi bearings onto the head of the connect-
ing rod.
• Degrease the screws and the connecting rod.
• Apply oil only to the internal thread.
• Tighten, ensuring that the screw is elongated by 0.20
to 0.22 mm with a minimum torque of 50 Nom.
• Only use worked screws with measuring area sup-
plied as spares.
Always use new screws, even with the used con-
necting rod.
Ensure that the comparator feelers only come into
contact with the worked surfaces.
NOTE
SELECTION TABLE FOR F4 CONNECTIN ROD
FUNCTIONING PLAY 0,036/0,061
CONNECTING ROD HEAD DIAMETER
A
38,114
B
38,123
38,122 38,130
CONNECTIN
G ROD PIN
DIAMETER
A 34,981 1,540/1,545 1,544/1,549
34,988 BLUE YELLOW
B 34,989 1,536/1,541 1,540/1,545
34,997 RED BLUE
Worked surfaces
to be measured