11 36 042 Removing and installing/replacing intake adjuster (N14)
Special tools required:
The timing is not determined at firing TDC of cylinder no. 1.
Modified procedure for timing adjustment.
All pistons are in the 90° position.
Check locking of adjusters.
Necessary preliminary tasks:
- Remove CYLINDER HEAD COVER .
Slide in special tool 11 9 590 in direction of arrow.
Rotate flywheel (1) at central bolt until TDC firing position at cylinder No. 1 is reached.
Attempt to rotate intake camshaft in direction of rotation at hexagon head.
The adjustment unit is locked in the initial setting when the camshaft is non-positively connected to the adjustment unit.
If no fixed connection to the camshaft can be established, the adjuster is faulty and must be replaced.
Rotate engine at central bolt in direction of rotation until designations (IN and EX) can be read from above.
Position special tool 11 9 551 on exhaust camshaft and secure with special tool 11 9 552 .
Before the special tool is placed in position the intake adjuster lock must be checked.
Position special tool 11 9 551 on intake camshaft and secure with both screws
Release chain tensioner (1) (have a cleaning cloth ready).
Tightening torque: 11 31 4AZ .
Release screw (1).
Unfasten screws (2).
Remove slide rail (1).
Release central bolt (3).
Remove VANOS unit (1) from timing chain (2).
VANOS unit of intake camshaft is marked with the letters IN.
Mount slide rail (1).
Insert bolts (2).
Tightening torque: 11 00 2AZ .
Screw in special tool 11 9 340 into cylinder head.
Pretension timing chain with special tool to 0.4 Nm .
Installation note:
The installation position of the VANOS unit can be freely selected.
Secure central bolt (1) with special tool 00 9 120 .
Tightening torque: 11 36 1AZ .
Fit CHAIN TENSIONER .
Check TIMING .
Assemble engine.