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The fan drivebelt is correctly tensioned when it
can be pushed down with rm thumb pressure
(10 kgf) 7 - 9 mm between the alternator and the
crankshaft. The drivebelt is tensioned by slack-
ening the screw on the tensioner bracket and
pushing forward the alternator. Lock the adjusting
screw when the correct tension has been obtained.
Check the fan drivebelt
tension once a week or after every 50 hours.
N.B. When the diesel engine starts, the charging
indicator shall go out. If the indicator does not go
out, the fan drivebelt may not be correctly tensio-
ned.
Battery
The battery is located to the right in front of the
engine. Check weekly that the battery electrolyte
level is about 10 mm above the plates. If the level
is too low, top up with distilled water. Check that
the cable shoes and terminal posts are clean, tigh-
tened and smeared with grease.
Check the state of charge of the battery with a hy-
drometer. During the winter it is particularly im-
portant that the battery is not discharged, since the
electrolyte in a discharged battery freezes and the
battery will be destroyed.
Disconnection of battery
The alternator system is sensitive to wrong con-
nection and therefore the following instructions
must be observed.
The battery and alternator leads must not be dis-
connected while the engine is running. A fault may
then occur in the alternator. Detach and isolate the
two battery cables before doing anything with the
alternator equipment.
Connection of the battery
The battery terminal posts must not be mixed up.
A + or - sign is punched on the respective ter-
minal post. If a wrong connection is made, the
alternator’s rectier will be destroyed.
When con-
necting up the battery, always connect the battery
cable to the chassis last.
Quick charging
Do not use a quick charging set when the alter-
nator is connected to the battery. The alternator’s
rectier may then be destroyed.
Alternator
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