Service and maintenance
Electrical system
60
© 2007
6
Regulations for working on the electrical
system
Do not touch the voltage conducting parts,
faulty warning lamps should be immediate-
ly replaced.
Pay attention to correct polarity of the con-
nections.
Cover electrical/electronic parts and con-
nections before cleaning the engine (e.g.
control units, generator, solenoid valves
etc.) Do not aim the water/steam jet directly
at them. Run the engine warm afterwards
to evaporate moisture residues.
Touching a lead against the frame to check
whether it is live must not, under any cir-
cumstances, be carried out.
For electrical welding work, the ground ter-
minal of the welding gear must be clamped
directly to the part being welded.
Three-phase current generator: Never dis-
connect the cables between battery, gener-
ator and regulator while the engine is
running.
Battery
Electronically stored data could be lost if
the battery is disconnected.
Keep battery clean and dry.
Make sure the battery is fitted correctly and
securely.
Dispose of old batteries in an environmen-
tally friendly way.
Danger of explosion! The gases emitted by
the battery are explosive!
Fire, sparks, smoking and naked lights are
prohibited!
Danger of acid burns! Wear protective
gloves and glasses! Avoid contact with skin
and clothing!
Danger of short circuit! Do not rest tools on
the battery!
Check acid level
z
Unscrew caps.
z
Note the manufacturer’s specifications concern-
ing the liquid level.
The liquid should normally be 10-15 mm above
the top edge of the plate or reach up to any avail-
able control device.
z
Only use distilled water to top up the battery.
z
Screw in caps.
Checking the voltage
z
Check the battery voltage with a conventional
voltmeter. The voltage indicates the charging
state. It should be between 12 and 14.4 Volt de-
pending per battery.
Check acid density
z
Unscrew caps.
z
Measure the electrolyte density of individual cells
with a commercial hydrometer. Hydrometer
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