11 31 505Adjusting camshaft timing (M47)

(refer to Oper. No. 11 31 005)
Note:

Before carrying out adjustments, it is essential to check the camshaft timing again,

refer to 11 31 005.


Remove vacuum pump,

refer to 11 66 000.

Note:
When releasing camshaft screw connection, grip camshafts at hexagon drive.

  • Slacken screw (1).
  • Slacken screw (2).
Note:
Tighten screws (1 and 2) so that they are free of play, chain wheels can still be turned to camshaft.

Fit special tool 11 6 322 from special tool kit 11 6 320.

Align inlet camshaft.

Note:

Special tool 11 6 320 must lie flush on cylinder head.


Locate inlet camshaft with special tool 11 6 320.

Note:
When tightening camshaft screw connection, grip camshaft at hexagon drive.

Tighten down inlet chain wheel with special tool 00 9 120.

Tightening Torque,

refer to Technical Data 11 31 4AZ.

Align exhaust camshaft.

Note:

Special tool 11 6 320 must lie flush on cylinder head.


Locate exhaust camshaft with special tool 11 6 320.

Note:
When tightening camshaft screw connection, grip camshaft at hexagon drive.

Tighten down exhaust chain wheel with special tool 00 9 120.

Tightening Torque,

refer to Technical Data 11 31 4AZ.

Remove special tool 11 6 320 from exhaust camshaft.
Pull back special tool 11 2 300 until flywheel is no longer located in position.
Crank engine at central bolt twice in direction of rotation until first cylinder is in firing TDC position again.

Crank engine in direction of rotation up to TDC position.

Caution!

Do not turn the engine back.


Secure crankshaft in TDC position with special tool 11 2 300.

Fit special tool 11 6 320 to inlet camshaft.Note:

Special tool 11 6 320 must lie flush on cylinder head.


Fit special tool 11 6 320 to exhaust camshaft.Note:

Special tool 11 6 320 must lie flush on cylinder head.


Remove special tool 11 6 320 from exhaust camshaft.

Remove special tool 11 2 300.

Install plug in alignment bore.

Assemble engine.

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