BMW 7 Owners & Service Manuals
BMW 7 Series (F01/F02) 2008-2015 Service Manual / Engine / V-Ribbed Belt W.Tens./Deflect

BMW 7 Series: V-Ribbed Belt W.Tens./Deflect

REPLACING A/C COMPRESSOR DRIVE BELT WITH BELT TENSIONER (N63)

IMPORTANT: Risk of damage! Release screws (1) on vibration absorber only if removal position is adjusted.

If contaminated with hydraulic fluid: Replace drive belt.

Crank engine at central bolt in direction of engine rotation.

Installation note: If the drive belt is to be reused, mark direction of travel and reinstall drive belt in same direction of rotation.

Necessary preliminary work

  • Remove DRIVE BELT for alternator.

Observe direction of engine rotation

Crank engine at central bolt until marking (see arrow) is reached on vibration absorber.

Release screws (1).

Tightening torque 11 28 2AZ.

V-Ribbed Belt W.Tens./Deflect
Fig. 189: Identifying Crank Pulley Screws And Marking

IMPORTANT: Belt pulley is pretensioned.

Belt pulley tension is relieved abruptly during the cranking process!

NOTE: Crank engine at central bolt until marking (see arrow) is reached on vibration absorber.

Remove elasto-belt.

Observe direction of engine rotation

V-Ribbed Belt W.Tens./Deflect
Fig. 190: Identifying Marking Reached On Vibration Absorber

Assemble engine.

REPLACING DRIVE BELT FOR ALTERNATOR (N63)

Notes

IMPORTANT: If contaminated with hydraulic fluid: Replace drive belt.

Installation note: If the drive belt is to be reused, mark direction of travel and reinstall drive belt in same direction of rotation.

Necessary preliminary work

  • Remove FAN COWL.
  • Release EXPANSION TANK for charge air cooler from mounting and press forwards.

Coolant hoses do not need to be released!

IMPORTANT: Belt tensioner is under high initial spring preload.

Slowly and carefully pre-tension belt tensioner (1) in direction of arrow up to stop.

Secure special tool 11 3 340 in dowel hole (2).

Belt tensioner in installation position.

Remove drive belt.

V-Ribbed Belt W.Tens./Deflect
Fig. 191: Identifying Belt Tensioner Tensioning Direction

NOTE: On vehicles which do not have a power steering pump, a deflecting element (3) is fitted in place of the power steering pump.

IMPORTANT: Belt tensioner is under high initial spring preload.

Put on the drive belt.

Remove special tool 11 3 340 from dowel hole (2).

Slowly relieve tension on belt tensioner (1).

Installation note: Make sure drive belt is in correct installation position.

V-Ribbed Belt W.Tens./Deflect
Fig. 192: Identifying Belt Tensioner Tensioning Direction

Assemble engine.

REPLACING TENSIONING DEVICE FOR ALTERNATOR DRIVE BELT (N63)

Necessary preliminary work

  • Remove alternator DRIVE BELT

If necessary, remove special tool 11 0 390.

Release screw (1).

Tightening torque 11 28 1AZ.

Remove belt tensioner with idler pulley (2).

V-Ribbed Belt W.Tens./Deflect
Fig. 193: Identifying Screw And Idler Pulley

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