BMW X5: V-Ribbed Belt With Tensioner / Deflect Element
REPLACING ALTERNATOR DRIVE BELT (N51)
Special tools required:
- 11 3 340
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 Fan Cowl with electric fan
NOTE: Mark the direction of rotation of the drive belt if it is to be reused.
Layout of drive belt.
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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.
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Fig. 147: Belt Tensioner And Bore
Secure belt tensioner with special tool 11 3 340.
NOTE: Illustration N42.
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Fig. 148: Special Tool (11 3 340) And Belt Tensioner
Remove drive belt (1) towards top.
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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:
- 11 3 340
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 Fan Cowl with electric fan
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.
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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).
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Fig. 151: Belt Tensioner And Tensioning Pulley
All:
Secure belt tensioner (1) with special tool 11 3 340.
Remove drive belt upwards.
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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:
- 11 3 340
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 Drive Belt.
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.
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Fig. 153: Belt Tensioner And Belt Tensioner Screw
Assemble engine.
REPLACING TENSIONING DEVICE FOR ALTERNATOR DRIVE BELT (N52K)
Special tools required:
- 11 3 340
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 Drive Belt
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).
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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).
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Fig. 155: Belt Tensioner And Drive Belt
Assemble engine.
READ NEXT:
Checking Timing Of Camshaft(s) (N52K)
Special tools required:
11 0 300
11 4 281
11 4 282
11 4 283
Necessary preliminary tasks:
Remove cylinder head cover
Remove underbody protection
Remove fastener (1) in direction of arrow.
Ins
Removing And Installing/Replacing Inlet Camshaft (N52K)
Special tools required:
11 4 281
11 4 481
IMPORTANT: Aluminium screws/bolts must be replaced each time they
are released.
The end faces of aluminium screws/bolts are painted blue for the purpose
SEE MORE:
Exhaust System, Complete
REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N52K)
Special tools required:
31 2 220 31 2 220 SUPPORT PLATE
WARNING: Scalding hazard!
Only perform this work after engine has cooled down.
Danger of injury!
Removal of the exhaust system must be carried out with the assistance of a
second person
Sport program M/S - Steptronic transmission
Sport program M/S
Principle
The shifting points and shifting times in the
Sport program are designed for sportier handling.
The transmission, for instance shifts up
later and the shifting times are shorter.
Activating the Sport program
Press the selector lever to the left from selector
lever posit
