Cummins — CYLINDER BLOCK - GROUP 01

Section 1 - Cylinder Block - Group 01 Crankshaft Magnetic Crack Inspection (1-07) M11 Page 1-33 Open indications on the crankpin or main bearing journal surfaces that extend closer than 3 mm [1/8 inch] to the fillet but do not enter the fillet are acceptable. Open indications in the longitudinal direction up to 12 1/2 mm [1/2 inch] long, but not closer than 3 mm [1/8 inch] to the oil hole chamfer are acceptable. Open indications that enter the oil hole chamfer or inter- sect the oil hole at 45 degrees (plus or minus 10 degrees) are not acceptable. Any open indication in the crankpin bearing oil hole en- trance chamfer is not acceptable.

Open indications on the counterweights inside of the criti- cal area (B) are not acceptable.