Maintenance work on the carrier
7.16 Electrical system
7 - 106 3 302 719 en Maintenance manual
GMK6300L-1
13.02.2018
7.16.3 Checking the charge level of the batteries
Spare parts and
tools
– Battery testing device; à Separate engine operating instructions, provided by
the manufacturer
, or
– Acid siphon.
Charge level table The measurement of the acid concentration with the acid siphon will give
you an indication of
the charge level of the batteries. The acid siphon can
have a scale in g/cm³, for example. Observe the special scale on your acid
siphon.
D
Acid concentration (g/cm³) Charge level
1.28 good
1.20 half-charged; recharge
1.12
flat; recharge immediately
G
Risk of poisoning from batteries containing lead
Battery poles, terminals and parts inside the battery contain lead. Residue
containing le
ad can stick to your hands and may not be allowed to enter
your body – e.g. by touching food.
Wash your hands after working on batteries.
G
Risk of explosion from escaping hydrogen.
Do not place tools on the battery and keep naked lights away from it.
G
Risk of explosion from static charge.
Use only antistatic cloths to clean the batteries.
This prevents the build-up of static charges which could cause hydrogen
mixtures to explode.
G
Risk of burns from battery acids
Battery acid is highly caustic. Wear safety glasses and protective gloves.
Do not tilt the battery. Rinse off or wash out any acid spray on the skin
or clothing using soap suds.
S
Risk of damage to the crane's electrical system.
Always switch off the battery master switche
s before commencing work
on the truck crane's electrical system.
This prevents short circuits and resulting damage to the electrical system.
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