Operation CHARM: Car repair manuals for everyone.

System Specifications



Cylinder Head Distortion
Max. permissible distortion 0.1 mm
Minimum distance between linear measurements 100 mm

Cylinder Head Reworking Dimension (a) at least 132.6 mm





Cylinder Head Bolts
Always replace bolts





First pass Tighten all bolts hand tight
Second pass Pretighten all bolts to 40 Nm
Third pass Tighten all bolts 1/4 turn (90°)
Final pass Tighten all bolts another 1/4 turn (90°)

Camshaft Bearing Cap Bolts
First pass: Tighten Caps 2 & 4 alternately & diagonally 20 Nm
Second pass: Coat Cap 1 contact surfaces with AMV 174 004 01
Final pass: Install Caps 3, 1 & 5 & tighten 20 Nm

Camshaft pulley bolt 100 Nm