Removing Cover For Camshaft Housing

Removing cover for camshaft housing

Tools

Preliminary work

1. Remove engine cover.
2. Remove secondary air pump with console.
3. Remove ignition coils (ignition rod module).

Tools and materials

Special tools

Removing cover for camshaft housing on cylinder bank 1 - 4

Note: The cover for the camshaft housing is removed and installed in the same way on cylinder bank 5 - 8 and cylinder bank 1 - 4!

1. Press together the plug connection for the positive crankcase ventilation on the camshaft housing lid -see arrows- and pull it off.

2. Pull off the cap and the cable plug for the hydraulic valve lying beneath it by pressing on wire clip -a-.

Note: Plastic clips can be damaged once the wiring harness holder has been undone and must be checked to ensure they can be used again!

3. Remove wiring harness holders by pulling carefully on the holders. Lay wiring harness aside.

4. Remove wiring harness on sheetmetal holders on the camshaft housing lid.

ATTENTION Risk of damage to the position sensor on the camshaft's trigger wheel!
^ The trigger wheel can be damaged when the cover of the camshaft housing is moved.
^ Ignition faulty.
^ Engine damage.
^ Move the camshaft housing lid carefully.
^ Carefully watch the trigger wheel when removing or fitting the cover of the camshaft housing.

Note: If the camshaft housing lid is not removed carefully, it can cause the trigger wheel on the position sensor at the rear on the camshaft to be bent out of shape!

Note: It is best to use a tool that has an head height of less than 50 mm -A- (see special tools) to loosen and tighten the rear fastening screw of the cylinder head cover close to the plenum panel.

5. Unscrew screws -1 to 19- (-16 and 19- were mounted on the torque support bracket) and lift the camshaft housing lid carefully at the back to avoid damaging the trigger wheel of the reference mark sender on the camshaft (this is located in the vicinity of screws 1 and 7). Then lift it off completely.

6. Turn the camshaft housing lid over and remove inner and outer seal for camshaft housing. Clean sealing faces on the camshaft housing lid and cylinder head.

Note: Always replace seals.