Section 1 - Cylinder Block - Group 01 Camshaft or Idler Gear - Magnetic Crack Inspection (1-19) M11 Page 1-57 Warning: When using a steam cleaner, wear protective clothing and safety glasses or a face shield. Hot steam will cause serious personal injury. Caution: The camshaft must have all magnetism re- moved completely and cleaned thoroughly. Small metal particles will cause engine damage. Remove all magnetism from the camshaft. Use solvent or steam clean the camshaft and dry with compressed air. Camshaft or Idler Gear - Magnetic Crack Inspection (1-19) Caution: Use a copper braid contact that has neoprene covers to avoid burning the teeth of the gear.
Position the gear keyway toward one of the contacts when inspecting. Use a magnetic particle testing machine. Use the residual method. Apply head shot amperage. Adjust the amperage to the specified value. Less than 101 mm [4 inch] 1000 101 to 203 mm [4 to 8 inch] 1500 Greater than 203 mm [8 inch] 2000 Gear O. D. Amperage D.C. Visually inspect the gear for cracks. Position the gear keyway toward one of the contacts when inspecting. Use the residual method. Apply coil shot amperage.