5-30 BA 348-01 * 2.0 * 34801b510.fm
5 Maintenance
Checking/replacing the main fuse box and the switching relays
The main fuse box with the power relays and the preheating time control unit is located in
the engine compartment on the right on the rear wall
☞Switch off ignition and disconnect the battery leads
☞Remove the fuse box cover
☞Main fuse and relay descriptions and output indications
– see chapter 6 “Main fuse box with relays” on page 6-8
Blown fuses indicate overloading or short circuits!
☞Have the electrical system checked by an authorized service centre
before inserting new fuses!
• In order to avoid damage to the electrical system, use only fuses and
relays of the specified load capacity (amperage) – see chapter 6 “Relays
(overview)” on page 6-8 and “Main fuse box with relays” on page 6-8
Checking the alternator
Follow the following notices under all circumstances:
• Only test run the engine with the battery connected
• When connecting the battery, ensure that the poles (+/−) are not inverted
• Always disconnect the battery before performing welding work or connecting a quick
battery charger
• Have malfunctioning charge indicator lights immediately replaced
In order to avoid voltage damage on the alternator, always disconnect the
battery leads from the battery terminals before performing welding work or
connecting a quick battery charger!
Fig. 190 : Main fuse box in engine compartment