11 28 125 Removing and installing/replacing both tensioning devices for alternator drive belt (N55 Hybrid)

Special tools required:

WARNING:

High-voltage hazard!

The following must be strictly observed prior to starting work :

Necessary preliminary work:

Remove special tool 11 0 390 .

Release screw (1) on belt tensioner.

Tightening torque 11 28 1AZ .

Fig 1: Identifying Special Tool (11 0 390) And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.