Maintenance work on the carrier
7.17 Electrical system
07.12.2017
Maintenance manual 3 302 649 en 7 - 117
GMK4090
Before checking
• Switch off the battery master switch (1).
• Open the cover on the battery box.
Checking the acid concentration
Batteries without covers (1) are maintenance-
free.
• Remove all covers (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 - 116.
• Check all cells in the same way.
• Screw on all caps (1) tightly.
After checking
• Close the cover on the battery box.
• Switch on the battery master switch (1).
• Check the timers on the tachograph and the
auxiliary heater;
à Operating manual.
• Enter the code for the radio; à Separate
operating manual
.
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