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Home >> BMW >> 2017 >> 530i >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine - Counterbalance Shafts/Drive Belts/Camshaft - Repair (G30) >> 11 28 V Belt With Belt TENSIONER And Idler Pulley >> 11 28 075 Removing and installing/replacing the drive belt for starter generator (540i, 2017-2020, 540i, 2021-2022, 540i xDrive, 2021-2022) >> Installing the drive belt for the starter motor generator

Installing the drive belt for the starter motor generator

Drive belt for the starter motor generator 

G14229401Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: RISK OF DAMAGE 
Wrong setting of the drive belt. 
Reduced service life of drive belt, subsequent damage. 
  • Check the setting of the belt tensioner in the adjustment range after each removal/installation or replacement of the drive belt. The marks must be aligned.
NOTE: TECHNICAL INFORMATION 
If the drive belt is reused: Mark the direction of rotation and reinstall the drive belt in same direction of rotation.
NOTE: TECHNICAL INFORMATION 
Replace drive belt if it is contaminated with coolant and oil residue.
G14229404Courtesy of BMW OF NORTH AMERICA, INC.

Result 

» Mark (1) of the belt tensioner is aligned within the adjustment range (2).

Measure

Check 

G14229405Courtesy of BMW OF NORTH AMERICA, INC.

Result 

» Mark (1) of the belt tensioner is not aligned within the adjustment range (2).

Measure

G14229406Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUES SPECIFICATION

Lock nut of the tensioning device on eccentric 
M8 tightening torque  22 Nm
G14229408Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work