11 28 010 Replacing drive belt for alternator (N52)
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Special tools required:
- 11 3 340 .
IMPORTANT:
Aluminum-magnesium materials
.
No steel screws/bolts may be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminum screws/bolts exclusively.
Aluminum screws/bolts must be replaced each time they are released .
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification:
Aluminum screws/bolts are not magnetic .
Joining torque and angle of rotation must be observed without fail (risk of damage) .
No steel screws/bolts may be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminum screws/bolts exclusively.
Aluminum screws/bolts must be replaced each time they are released .
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification:
Aluminum screws/bolts are not magnetic .
Joining torque and angle of rotation must be observed without fail (risk of damage) .
Necessary preliminary work:
- Remove FAN COWL with electric fan
Drive belt route
NOTE:
Mark the direction of travel of the drive belt if it is to be reused.
Turn belt tensioner (3) in direction of arrow until bore (4) is flush on housing.
Secure belt tensioner (3) in place with special tool 11 3 340 .
Load is removed from tensioning pulley (2).
Remove drive belt (1) towards top.
Assemble engine.
Installation note:
Check drive belt for correct installation position and, if reusing, observe direction of travel. Risk of damage .