Maintenance work on the carrier
7.16 Electrical system
16.08.2018
Maintenance manual 3 302 577 en 7 - 111
GMK7450
Before checking
• Switch the battery master switch (1) off and
remove the selector handle.
• Open the cover (2) 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 - 110.
• Check all cells in the same way.
• Tightly screw on all covers (1).
After checking
• Close the cover (2) on the battery box.
• Attach the selector handle and 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
.