Checking And Adjusting Camshaft Setting

87 MODELS ONWARD ENGINE TYPE M 28. 41/42

4.Turn crankshaft until cylinder No. 6 is at 20° after TDC.

5.Block camshaft gears by installing 3 M 5 x 15 auxiliary bolts then tightening M 10 bolt to 65 Nm (47 ftlb).

6.Turn crankshaft through 2 more revolutions and recheck setting. Specified value: 1.6 + 0.1 mm, cylinder No. 6 20° after TDC. Readjust if necessary.

7.Once adjustment is completed, unscrew and remove temporary M 5 x 15 bolt.

Cylinder bank 5-8

8,Turn crankshaft until cylinder No. 6 is at TDC and check settings of cylinder bank 5-8 as described above (cylinder bank 1-4). Specified value 2.0 + 0.1 mm, cylinder No. 1 20° after TDC.

Note:

Installation of new camshafts in type M 28. 41/42 engines as of model year 87 has changed the valve timing. The new camshafts are recognizable because they have no rear journals.

Adjusting

Cylinder bank 1-4

Testing and adjusting specification: 1.8 + 0.1 mm

Cylinder bank 5-8

Testing and adjusting specification: 2.0 + 0.1 mm

Adjustment of the camshafts follows the same sequence as described on p. 15 - 134.

Printed in Germany - XIII, 1986 Checking and Adjusting Camshaft 15 - 135

Setting

CYLINDER HEAD COVER, DISASSEMBLING AND REASSEMBLING (32-VALVE ENGINES)

15 - 136 Cylinder Head Cover, Disassembling and Reassembling

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