12 14 521 Replacing crankshaft pulse generator (N54, N54T)
WARNING: This page is about a different car, the 2010 BMW 135i, 2009 BMW 135i, and 2008 BMW 135i. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
Read and comply with notes on protection against electrostatic damage (ESD protection).
See 61 35... NOTES ON ESD PROTECTION (ELECTRO STATIC DISCHARGE)
.
IMPORTANT:
Aluminum screws/bolts must be replaced each time they are released.
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification:
Jointing torque and angle of rotation must be observed without fail (risk of damage).
Aluminum screws/bolts are permitted with and without color coding (blue).
For 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 as necessary. See 11 61 050 REMOVING AND INSTALLING INTAKE AIR MANIFOLD (N54, N54T) .
- Remove tension strut from spring strut dome on left. See 51 71 371 REMOVING AND INSTALLING/REPLACING TENSION STRUT ON LEFT OR RIGHT SPRING STRUT DOME (E88) or 51 71 371 REMOVING AND INSTALLING/REPLACING TENSION STRUT ON LEFT OR RIGHT SPRING STRUT DOME (E82) .
Detach plug (1) from crankshaft pulse generator (2).
Release screw.
Installation:
Replace aluminum screws.
Tightening torque 12 14 2AZ, see 12 14 ELECTRONIC SHIFT UNITS OR CONTROL UNITS .
Withdraw pulse generator (2) from crankcase.
Installation:
Replace sealing ring.
NOTE:
Check stored fault messages.
Now clear the fault memory.
Now clear the fault memory.