Maintenance and Service
Shutdown for a longer period of time
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WARNUNG
Risk of burns.
Battery acid may cause dangerous burns on the skin and within the respiratory sys-
tem.
– When handling acid batteries, always wear sufficient protective clothing (protective
goggles, acid-resistant gloves, apron).
– Avoid skin contact with battery acid.
– Avoid inhaling acid vapours.
– When handling batteries, make sure that there is sufficient ventilation in the work-
place.
– In case of skin contact with battery acid, immediately flush the skin sections con-
cerned with lots of water. Then immediately consult a doctor.
– Uninstall the batteries. The batteries should be stored cool and dry, but protected
against frost. Before storing, check the acid level and, in case of need, fill up using
distilled water. Completely charge the batteries before storing them. Check the bat-
tery voltage once each month during storage and, in case of need, recharge the
batteries. Grease the battery terminals using a specific terminal grease.
DANGER
Warning against explosion hazard!
If acid batteries are improperly charged using unsuitable charging devices or too high
charging voltage, then this may lead to generation of oxyhydrogen gas. Oxyhydrogen
gas is very easily combustible and may explode.
– Always make sure of the correct charging voltage.
– Make sure that the batteries are only charged in well ventilated locations.
– Smoking, fire or open flame are strictly prohibited.
Batteries useful life
To preserve the starting ability of the batteries in case of a shutdown period of more
than 2 weeks, the following notes must be observed:
– Check the liquid level. If it is too low, then exclusively fill up with distilled water to
the maximum acid level mark.
– The self-discharge rate amounts to about 0.2% of the nominal capacity/day at
20°C.
– To avoid deep discharge, the acid density must be checked at regular intervals. If
the acid density is below 1.21 kg/l, then the batteries must be recharged. The rec-
ommended charging current is 1/10th of the capacity.
– Deep discharged batteries form lead sulphate. Regeneration by recharging is no
longer possible.
– In case of batteries forming sulphate, detectable by the silver-coloured plate coat-
ing and turbid battery acid, there are neither guarantee nor warranty claims. They
are also excluded from any accommodation scheme, because this damage is
caused by gross negligence during maintenance.
7.17.1 Mercedes-Benz regulations for engine shutdown
During temporary shudown of the machines, operated with the diesel fuel B07 (diesel
with up to 7% of biodiesel content), sticking of the fuel amount control valve may
occur.
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