Section 2 - Cylinder Head - Group 02 Cylinder Head - Rebuild (2-02) M11 Page 2-13 Place the magnetizing head on the combustion face as shown to check for cracks that run lengthwise of the cylinder head. Repeat the procedure as outlined above. Remove all magnetism and use solvent to clean the cyl- inder head. Dry with compressed air. NOTE: The cylinder head must be thoroughly cleaned after using the magnetic crack detector to remove all of the iron fragments. Measure the flatness of the cylinder head gasket surface as follows: AA and BB (corner to corner) CC (across combustion face) DD (across entire head surface) NOTE: Dimensions CC and DD must be checked from front to rear of cylinder head.
Cylinder Head Flatness mm in AA and BB 0.200 MAX 0.008 CC 0.076 MAX 0.003 DD 0.127 MAX 0.005 If the cylinder head combustion face is pitted, grooved or worn, the cylinder head surface must be machined or cut. Refer to the Alternative Repair Manual, Bulletin No. 3810310.