After Use - Volvo Penta AD31L Instruction Book

General information, engine
Automatic fuse
An automatic fuse may have tripped if the engine
cannot be started or if the instruments display 0
readings. If this is the case, reset the fuse using
the button. Always investigate the cause of overloa-
ding.
Emergency stop
A diesel engine is not dependent on a power supply
for its operation. Should a serious electrical fault oc-
cur, the engine can continue to run but the normal
stop function of the ignition switch is inoperative.
Emergency stopping of the engine can always be
done by pulling the injection pump lever (1) back-
wards.
KAD42, KAMD42
The engine is equipped with a mechanical compres-
sor which provides powerful acceleration up to the
planing position. The compressor is engaged and
disengaged electronically depending on the speed.
Engagement is at approx. 1700 rpm depending on
the setting and disengagement takes place at ap-
prox. 2500 rpm.
The compressor also has a "kickdown" function
which engages the compressor at speeds from id-
ling to 3100 rpm.
When operating in the vicinity of the compressor's
engagement/disengagement speeds, the compres-
sor can be engaged/disengaged for brief periods. If
this is done, adapt the speed so that the compres-
sor is either constantly engaged or disengaged. The
engine sound changes when the compressor is en-
gaged. This is quite normal.
Sailing boats
During sailing the propeller may cause the propeller
shaft to rotate when the engine is stopped. This
rotation may be harmful to the reverse gear since
its oil pump is stationary when the engine is stop-
ped. When the engine is stopped, the propeller
shaft can be allowed to rotate for max 24 hours.
However, it is beneficial where possible to run the
engine every 8 hours to lubricate and cool the rever-
se gear. If the above cannot be accomplished, a
shaft brake must be fitted.

After use

9 After use and when the boat is tied up, it is im-
portant for the engine to run at idling for at least
1 minute to avoid subsequent boiling of the coo-
lant.
10 Trim the drive to the maximum trimmed position
to protect the trim cylinders' untreated surfaces
from fouling. The exception to this is when there
is a risk that the drive could run aground. The
drive then must be raised instead to the maxi-
mum position. Do not forget to lower the drive
before starting.
DPX double installation: Both drives must be
tilted at the same time and lowered at the same
time before starting.
Stop the engine using the ignition switch.
WARNING! Never switch off at the main
switch before stopping the engine. This
could damage the alternator.
11 Switch off the main switch.
12 Before you leave the boat check for leaks
around the engine and that everything else in the
engine compartment appears normal.
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