11 28 020 Replacing TENSIONING Device For Alternator Drive Belt (N12)

WARNING: This page is about a different car, the 2008 MINI Cooper and 2007 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.

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.

Fig 1: Identifying Belt Tensioner Position And Sliding Pin

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (2).

Tightening torque: See ENGINE - TIGHTENING TORQUES .

Remove tensioning device (3).

Fig 2: Identifying Tensioning Device

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

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.

Fig 3: Identifying Belt Tensioner Position And Sliding Pin

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.