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Checking the battery fluid level
! Tap water reduces the electrical power
output of the batteries. Add only distilled or
de-ionised water.
Do not use a metal funnel when adding dis-
tilled water. The metal funnel may cause a
short circuit and the batteries may be dam-
aged.
Example (tractor/semitrailer combination): batter-
ies in chassis frame, one beside the other
Observe the safety notes on handling batter-
ies.
X
Check the battery fluid level as regularly as
required by the vehicle operating condi-
tions, and at least once a year.
X
Remove the battery compartment cover.
X
Vehicles with batteries fitted one above the
other: remove the batteries.
X
Unscrew cell caps ;.
X
Check the battery fluid level.
The battery fluid must reach marker bar :
in each battery cell.
X
Top up with distilled/de-ionised water.
X
Refit cell caps ;.
X
Vehicles with batteries fitted one above the
other: fit the batteries.
X
Replace the battery compartment cover.
Battery care
! Dirty battery terminals and battery surfa-
ces cause creepage current. This can cause
the batteries to discharge.
! Do not use any cleaning agents contain-
ing fuel. Cleaning agents containing fuel
corrode the battery housing.
! If dirt enters the battery cell, self-dis-
charging of the battery is increased and the
battery may be damaged.
Observe the following on battery care:
X
Always keep the terminal clamps and bat-
tery surfaces clean and dry.
X
Lightly grease the undersides of the battery
terminal clamps with acid-resistant grease.
X
Only clean the batteries with the cell caps
screwed in.
Otherwise, dirt can enter the battery cells.
X
Only clean the battery housing with com-
mercially available cleaning agents.
Parking up the vehicle
When parking up the vehicle, special meas-
ures according to Mercedes-Benz Specifica-
tions for Service Products Sheet No. 382.0
need to be taken. More information can be
obtained from any Mercedes-Benz Service
Centre.
Maintenance
361
Z
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