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Home >> BMW >> 2013 >> 550xi >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine - Camshafts, Accessory Drive Belt & TENSIONER - Repair >> Accessory Drive Belt And TENSIONER >> N55 Hybrid Engine >> 11 28 010 Replacing drive belt for alternator (N55 Hybrid)

11 28 010 Replacing drive belt for alternator (N55 Hybrid)

Special tools required: 

WARNING:

High-voltage hazard!

The following must be strictly observed prior to starting work  :

Necessary preliminary work: 

NOTE: Mark the direction of travel of the drive belt if it is to be reused.

Turn belt tensioner (1) in direction of arrow until bore hole (2) is aligned with belt tensioner and crankcase.

Hold belt tensioner (1) under tension.

Secure with special tool 11 0 390 .

Turn belt tensioner (3) in direction of arrow until bore hole (4) is aligned with belt tensioner and crankcase.

Hold belt tensioner (3) under tension.

Secure with special tool 11 0 390 .

Remove drive belt (5).

Fig 1: Turning Belt Tensioner
G09920813Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Installation note: 

Check drive belt for correct installation position and, if reusing, observe direction of travel. Risk of damage  .