HATZ Diesel 1D90 - Manual (Page 36)

7. Work on the electrical system
Batteries generate explosive gases.
Keep them away from naked flame
and sparks which could cause them to ignite.
Do not smoke. Protect the eyes, skin and
clothing against battery acid. Pour clear water
over acid splashes immediately. In case of
emergency call doctor.
Do not place any tools on top of the battery.
Always disconnect the negative (–) pole of the
battery before working on the electric device.
– The positive (+) and negative (–) battery ter-
minals must not be accidentally interchanged.
– When installing the battery, connect the posi-
tive lead first, followed by the negative lead.
Negative pole to earth (ground) on engine
block.
– When removing the battery, disconnect the
negative lead first, followed by the positive
lead.
– In all circumstances, avoid short circuits and
shorts to earth (ground) at live cables.
– If electrical faults occur, first check for good
contact at the cable connections.
– Replace a failed indicator light without delay.
– Do not take the key out while the engine is
running.
– Never disconnect the battery while the engine
is running. Electric voltage peaks can cause
damage to electrical components.
– In case of an emergency start in manual
mode, leave the battery (which might be dis-
charged) connected to the engine.
– For emergency operation without battery,
make sure that the plug-and-socket connector
to the instrument box is disconnected addi-
tionally before the engine is started.
– Do not splash electrical device with water jet
or pressure jet during engine cleaning.
– When carrying out welding work on the en-
gine or attached equipment, attach the earth
(ground) clip as near as possible to the weld-
ing point, and disconnect the battery.
If an alternator is fitted, separate the plug con-
nector leading to the voltage regulator.
The relevant circuit diagrams are supplied with
engines which have an electrical system.
Additional copies of circuit diagrams can be
obtained on request.
HATZ assumes no liability for electrical systems
which was not carried out acc. HATZ circuit dia-
grams.
8. Protective treatment
A new engine can normally be stored for up to
12 months in a dry place.
If atmospheric humidity is high (or if exposed
to sea air), protection is sufficient for about
6 months’ storage.
If the engine is to be stored for a longer period,
or laid up out of use, please consult the nearest
HATZ service point.
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