BMW X5: Replacing Crankshaft Pulse Generator (N52, N52K, N51, N53)
IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection).
IMPORTANT: Aluminum-magnesium materials.
No steel screws/bolts may be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminum screws/bolts exclusively.
Aluminum screws/bolts must be replaced each time they arereleased.
The end faces of aluminum 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:
- Read out fault memory of DME control unit
- Switch off ignition
NOTE: Installation location of pulse generator for crankshaft is underneath starter motor.
Preparatory tasks:
- Remove intake air manifold.
Detach plug (1) from crankshaft pulse generator (2).
Release screw.
Installation
Replace aluminum screws.
Tightening torque 12 14 2AZ.
Withdraw pulse generator (2) from crankcase.
Installation:
Replace sealing ring.
NOTE: Check stored fault messages. Now clear the fault memory.
Fig. 13: Locating Pulse Generator Plug
REPLACING INLET CAMSHAFT PULSE GENERATOR (N52, N52K, N51, N53)
IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection).
Necessary preliminary tasks:
- Read out fault memory of DME control unit.
- Switch off ignition
- Remove If necessary, remove radiator cover
Unlock plug (1) and remove.
Release bolt.
Installation:
Replace screw.
Tightening torque 12 14 3AZ.
Remove pulse generator (2).
Fig. 14: Locating Pulse Generator Plug
NOTE: Check stored fault messages.
Now clear the fault memory.
READ NEXT:
Replacing Pulse Generator On Inlet Camshaft (N52K)
IMPORTANT: Read and comply with notes on protection against
electrostatic damage (ESD
protection).
Necessary preliminary tasks:
Read out fault memory of DME control unit; if necessary, work through
Replacing Control Unit (DME)
IMPORTANT: Read and comply with notes on protection against
electrostatic damage (ESD
protection).
Necessary preliminary tasks:
Switch off ignition
Disconnect battery negative lead.
Remove microf
Alternator With Drive
REPLACING ALTERNATOR BELT PULLEY
Special tools required:
12 7 110.
Remove and install alternator drive belt.
Depending on alternator type, grip shaft with:
hexagon socket
multi-tooth socket or
SEE MORE:
Lowering/Raising Front Axle Carrier (Universal Lifter)
Special tools required:
00 2 030
31 2 255
31 2 256
31 4 170
31 5 250
31 5 255
31 5 256
WARNING: Danger to life!
Mount securing fixture for vehicle on lifting platform to prevent the
vehicle from slipping off or tilting down.
Secure engine in installation position to prevent it from falling
Adjusting Parking Brake
The parking brake test must be carried out on the roller dynamometer as
follows.
Release position (engine off / ignition on ):
Wheel circumferential force right / left < or = 300 N.
Press parking brake button (engine off / ignition on ):
Car must be pulled uniformly out of brake roller or d
