Maintenance work on the carrier
7.17 Electrical system
09.03.2018
Maintenance manual 3 302 744 en 7 - 127
GMK5250L
Before checking
• Switch off the battery master switch;
à Operating manual.
• Pull the battery box out.
Checking the acid concentration
Batteries without caps (1) are maintenance-
free.
• Remove all caps (1).
• Read off the cell value on the acid siphon (2)
and compare the value with that in the table;
à Charge level table, p. 7 - 126.
• Check all cells in the same way.
• Tightly bolt on all caps (1).
After checking
• Push the battery box in.
• Switch on the battery master switch (1);
à Operating manual.
• Check the timers on the tachograph and on
the auxiliary heater;
à Operating manual.
• Enter the code for the radio; à Separate
operating manual
.
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