MV Agusta 2008 F4 312RR 1078 Workshop Manual page 38

Cylinder kit
Phase sensor
The F4 1078 MVAgusta vehicle is equipped with a
phase sensor that transmits timing phase data to the
control unit. The discharge side of the camshaft fea-
C
tures a half-ring, the position of which is detected by a
sensor which sends information on its timing to the
central unit in real time. The sensor that sends infor-
mation to the central unit is screwed to the discharge
side of the guard on the central unit. Through a hole on
the guard, it monitors the movement of the half-ring on
the camshaft.
Removing the valve gear components
In order to facilitate the detachment of the stands use
a rubber hammer or delicately the end part of a flat scr-
ewdriver.
Slightly rotate without force the unloaded end of the
gearshaft shifting it from its slot; by doing so, the tensi-
on on the distribution chain will loosen.
Release the distribution chain.
First remove the unloaded end of the gearshaft. Fasten
the distribution chain with copper thread in order to
retrieve it during the following procedure..
Remove the inlet end of the camshaft.
Remove the first link block for the distribution chain by
using the tightening screws.
In case it should be necessary to substitute the distri-
bution chain at the expected mileage (see the pro-
grammed maintenance chart), it is advisable also to
substitute the gears on the camshaft (INLET
n°8000A7378 - EXHAUST n°8000A7379).
When refitting, thoroughly clean all surfaces.
Position the timing gear so that the side that has recei-
ved no thermal treatment (the one with no timing
marks) is in contact with the NL655-TYPE
NORDLOCK washers Part No. 8000A3486.
When refitting, always replace the washers and fit
them as shown in the figure. Apply the threadlocking
product STRONG THREAD BLOCKER on new screws
Part No. 8C0085071 and tighten at 21 N·m.
During the operation, take special care in ensuring that
the chain is not dislodged from its position.
NORDLOCK detail
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