5831
9
AIR SHUTTERS ADJUSTMENTS
The adjustment of the air shutters shall be set each time, with reference to the nozzles deliveries and the combustion
chamber pressurization.
Fig. 2 shows the positioning of the air shutters.
Fig. 3 shows the positioning of the cams of the motor.
Air shutters adjustments
1
st
stage: manual regulation carried out by acting on the sector
A
(fig. 2).
2
nd
-3
rd
stage: carried out by acting on the coloured lever of the motor (fig. 3).
Blue lever: adjustment not necessary.
Positioned by the factory on the vertical of the motor axis. It maintains the shutters of 2
nd
- and 3
rd
stage
closed during the 1st stage operation and in the stop periods.
Do not turn clockwise (-) the lever to avoid crawlings of the air shutters, turning the lever anticlockwise
(+) the motor will be in different position during the passage from 2nd to 1st stage or during the stop.
Orange lever: for 2
nd
stage air shutters adjustment, it is adjustable both in opening and in closing position.
Red lever: for 3
rd
stage air shutters adjustment, it is adjustable both in opening and closing position.
Black lever: it controls the opening of the 2
nd
stage oil valve. It has always to anticipate the orange lever.
The control of the 3
rd
stage valve is automatic through one of the cam next to the red lever.
Fig. 2
Fig. 3
