7 CARE AND MAINTENANCE
7.52 MHL360 E
7.7.7.2 Replacing and tensioning V-
ribbed belts
Main belt drive and air conditioning com-
pressor
►
Switch off the diesel engine and remove
the ignition key.
►
Operate the battery disconnect switch.
►
Using a socket wrench, push the tension-
ing pulleys in the direction of the arrow until
the drill holes are aligned, then secure with
a suitable locking pin, diameter 6 mm.
►
Remove the V-ribbed belt from the smallest
roller or the tensioning roller first.
►
Fit a new V-ribbed belt in accordance with
the routing of the belt.
►
Move the tensioning pulleys back into posi-
tion.
►
Check to see whether the V-ribbed belts
are correctly routed.
►
n For the test run, close all openings to
the engine compartment.
►
Switch the battery isolator switch on.
►
Perform a trial run.
►
Check the tension and seat again.
When replacing the V-ribbed belt, check the
idler pulley for ease of movement and play. Re-
place defective idler pulleys immediately.
Fig. 297 Routing the V-ribbed belt
1 Crankshaft
2 Idler pulley
3 Water pump
4 Alternator
5 Fuel pump
6 Hexagon-head for socket wrench
7 Holes for locking pin
Fig. 298 Routing the V-ribbed belt
1 Crankshaft
2 Idler pulley
3 Air conditioning compressor
4 Hexagon-head for socket wrench
5 Holes for locking pin
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