BMW X5 Owners & Service Manuals

BMW X5: V-Ribbed Belt With Tensioner / Deflect Element

BMW X5 (G05) 2019-2024 Service & Repair Manual / Engine / Engine Mechanical (6-Cylinder) / V-Ribbed Belt With Tensioner / Deflect Element

REPLACING ALTERNATOR DRIVE BELT (N51)

Special tools required:

IMPORTANT: Aluminium-magnesium materials.

No steel screws/bolts may be used due to the threat of electrochemical corrosion.

A magnesium crankcase requires aluminium screws/bolts exclusively.

Aluminium screws/bolts must be replaced each time they are released.

The end faces of aluminium screws/bolts are painted blue for the purposes of reliable identification.

Jointing torque and angle of rotation must be observed without fail (risk of damage).

Necessary preliminary tasks:

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

Layout of drive belt.

V-ribbed Belt With Tensioner / Deflect Element
Fig. 146: Drive Belt Tensioner, Mounting Screw And Removal Direction

Turn belt tensioner (4) in direction of arrow until bore (2) is flush on housing.

Hold belt tensioner (4) under tension.

V-ribbed Belt With Tensioner / Deflect Element
Fig. 147: Belt Tensioner And Bore

Secure belt tensioner with special tool 11 3 340.

NOTE: Illustration N42.

V-ribbed Belt With Tensioner / Deflect Element
Fig. 148: Special Tool (11 3 340) And Belt Tensioner

Remove drive belt (1) towards top.

V-ribbed Belt With Tensioner / Deflect Element
Fig. 149: Identifying Belt Tensioner

Assemble engine.

Installation:

Check that drive belt for is in correct installation position - risk of damage.

REPLACING ALTERNATOR DRIVE BELT (N52K)

Special tools required:

IMPORTANT: Aluminium-magnesium materials.

No steel screws/bolts may be used due to the threat of electrochemical corrosion.

A magnesium crankcase requires aluminium screws/bolts exclusively.

Aluminium screws/bolts must be replaced each time they are released.

The end faces of aluminium screws/bolts are painted blue for the purposes of reliable identification.

Jointing torque and angle of rotation must be observed without fail (risk of damage).

Necessary preliminary tasks:

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

Course of E9x drive belt:

Turn belt tensioner (4) in direction of arrow until bore (2) is flush on housing.

Hold belt tensioner (4) under tension.

Load is removed from tensioning pulley.

V-ribbed Belt With Tensioner / Deflect Element
Fig. 150: Belt Tensioner And Bore

Course of E85 drive belt:

Turn belt tensioner (1) in direction of arrow until bore is flush on housing.

Hold belt tensioner (1) under tension.

Load is removed from tensioning pulley (2).

V-ribbed Belt With Tensioner / Deflect Element
Fig. 151: Belt Tensioner And Tensioning Pulley

All:

Secure belt tensioner (1) with special tool 11 3 340.

Remove drive belt upwards.

V-ribbed Belt With Tensioner / Deflect Element
Fig. 152: Special Tool (11 3 340) And Belt Tensioner

Assemble engine.

Installation:

Check that drive belt for is in correct installation position - risk of damage.

REPLACING TENSIONING DEVICE FOR ALTERNATOR DRIVE BELT (N51)

Special tools required:

IMPORTANT: Aluminium-magnesium materials.

No steel screws/bolts may be used due to the threat of electrochemical corrosion.

A magnesium crankcase requires aluminium screws/bolts exclusively.

Aluminium screws/bolts must be replaced each time they are released.

The end faces of aluminium screws/bolts are painted blue for the purposes of reliable identification.

Jointing torque and angle of rotation must be observed without fail (risk of damage).

Necessary preliminary tasks:

Remove special tool 11 3 340.

Release screw (3).

For tightening torque refer to 11 28 1AZ in 28 V-RIBBED BELT WITH TENSIONER.

Installation:

Replace aluminium screws.

V-ribbed Belt With Tensioner / Deflect Element
Fig. 153: Belt Tensioner And Belt Tensioner Screw

Assemble engine.

REPLACING TENSIONING DEVICE FOR ALTERNATOR DRIVE BELT (N52K)

Special tools required:

IMPORTANT: Aluminium-magnesium materials.

No steel screws/bolts may be used due to the threat of electrochemical corrosion.

A magnesium crankcase requires aluminium screws/bolts exclusively.

Aluminium screws/bolts must be replaced each time they are released.

The end faces of aluminium screws/bolts are painted blue for the purposes of reliable identification.

Jointing torque and angle of rotation must be observed without fail (risk of damage).

Necessary preliminary tasks:

E9x only:

Remove special tool 11 3 340.

Release screw (3) on belt tensioner (4).

For tightening torque refer to 11 28 1AZ in 28 V-RIBBED BELT WITH TENSIONER.

Installation:

Replace aluminium screws.

Remove belt tensioner (4).

V-ribbed Belt With Tensioner / Deflect Element
Fig. 154: Belt Tensioner And Belt Tensioner Screw

E85 only:

Remove special tool 11 3 340.

Release screw on belt tensioner (1).

For tightening torque refer to 11 28 1AZ in 28 V-RIBBED BELT WITH TENSIONER.

Installation:

Replace aluminium screws.

Remove belt tensioner (1).

V-ribbed Belt With Tensioner / Deflect Element
Fig. 155: Belt Tensioner And Drive Belt

Assemble engine.

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