3 Series E91 325xi (N52K) TOUR
11 12 000
Removing and installing/sealing cylinder head
cover (N52K)
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 ignition coils
•
Release ignition wiring harness in cylinder head cover area
•
Remove tension strut
Unlock and detach vent hose (1).
If necessary, pull off metal bracket (2) in direction of arrow.
Release screws (3) on electric servomotor.
Tightening torque 11 37 3AZ
.
Note:
A further screw, which cannot be seen in the picture, must be
released under the electric servomotor (4).
Release screw on electric servomotor.
Tightening torque 11 37 3AZ
.
Remove servomotor (4) in direction of arrow.
If necessary, release nuts (5).
Tightening torque 11 72 1AZ
.
If necessary, remove secondary air valve (6).
RA Removing and installing/sealing cylinder head cover (N52K)
BMW AG - TIS
11.02.2013 09:03
Issue status (12/2007) Valid only until next DVD is issued
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