3 Series E46 318ti (N42) COMP
Exhaust camshaft:
Note:
The twin surface for locating the camshaft has a curvature on its
upper side and a straight edge on its lower side.
In the firing TDC position of the 1st cylinder, the curvature on the
twin surface points upwards in the cylinder-bore axis.
Additional distinction of exhaust camshaft:
In the firing TDC position of the 1st cylinder, the openings (1) on
the exhaust camshaft point to the exhaust manifold.
Note:
The special tool bore for the TDC position is located on the inlet
side underneath the starter motor.
For improved accessibility: unclip cable in area of special tool bore
and press to one side.
Crank engine at central bolt and secure flywheel with special tool
11 9 190 in firing TDC position of 1st cylinder.
Automatic transmission only
Illustration does not show automatic transmission.
Important!
On engines with automatic transmissions, there is shortly
before the special tool bore (1) for the TDC position a large
bore (2) which can be confused with the special tool bore.
If the flywheel is secured in the correct bore (1) with the special
tool 11 9 190 , the engine can no longer be moved at the
central bolt.
Important!
When the engine is shut down, the inlet and exhaust
adjustment unit is normally locked in its initial position.
The situation may arise in some individual cases where this
initial position is not reached and the camshaft can continue
to be rotated in the adjustment range of the adjustment unit.
In order to avoid incorrect timing adjustment, it is essential to
check the locking of the adjustment unit and if necessary
perform locking by rotating the camshafts.
RA Removing and installing/replacing inlet and exhaust adjustment unit (N42/N46)
BMW AG - TIS
12.02.2013 01:43
Issue status (12/2007) Valid only until next DVD is issued
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