Replacing Tensioning Device for Alternator Drive Belt

11 28 020 - Replacing tensioning device for alternator drive belt (N12)





Warning!
Tensioning device subject to spring bias (danger of injury!).





Necessary preliminary tasks:
- Bring front panel into service position.
- Disconnect lambda oxygen sensor cable.





Pretension tensioning device (1) with tool (2) in direction of arrow.
Press in locking pin (3) in direction of arrow and hold.
Slowly release tool (2) and secure in position.

Note:
Locking pin (3) holds tensioning device (1) at pretension.





Release screws (2).
Tightening torque:11 28 1AZ.
Remove tensioning device (3).





Installation Note:
Lever tensioning device (1) with tool (2) in direction of arrow.
Locking pin (3) is pretensioned with a spring and is automatically relieved during unlocking.
Ensure drive belt is in correct installation position.





Assemble engine.