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.
.png)
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).
.png)
Fig. 14: Locating Pulse Generator Plug
NOTE: Check stored fault messages.
Now clear the fault memory.
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 test schedules
- Switch off ignition
Lever out expansion rivets (1).
Press lock (2) and raise intake duct (3).
Detach intake duct (3) from air filter housing and remove.
.png)
Fig. 15: Locating Ignition Coil Covers Screws And Holder
Unclip Bowden cable for engine bonnet/hood actuator from transverse reinforcement (1).
Release screws on left and right sides. Tightening torque 51 71 4AZ.
Remove cross-brace (1).
.png)
Fig. 16: Identifying Plug Connector
Installation:
Replace screw.
Tightening torque 12 14 3AZ.
Remove pulse generator (2).
.png)
Fig. 17: Locating Pulse Generator And Screw
NOTE: Check stored fault messages.
Now clear the fault memory.
READ NEXT:
Replacing Exhaust 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; if necessary, work through
Removing/Replacing Knock Sensors (N52, N52K, N51)
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
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:
Jump-starting
General information
If the battery is discharged, the engine can be
started using the battery of another vehicle and
two jumper cables. Only use jumper cables with
fully insulated clamp handles.
Safety information
DANGER
Contact with live components can lead to an
electric shock. There is a risk of
Radiator, Expansion Tank
CHECKING COOLING SYSTEM FOR WATER LEAKS
Special tools required:
17 0 101 17 0 100 TESTER
17 0 113 17 0 100 TESTER
17 0 114 17 0 100 TESTER
WARNING: Danger of scalding!
Only perform this work after engine has cooled down.
Checking pressure drop in cooling system:
Open cap on coolant expansion ta
