SERIES 60 SERVICE MANUAL 1.2.3.3 Inspection and Rework for Firedeck Straightness The large mass and length of the head casting may contain longitudinal warp after it is unbolted and removed from the engine block. At the time of factory manufacture, the longitudinal warp is normalized by using a fixture and clamping the casting during machining. The casting is placed in a fixture and clamped from its locating surfaces (datums). When unclamped, the head casting resumes its original shape until it is bolted and tightened to the engine block. Inspect the bottom (firedeck) of the cylinder head for straightness as follows: 1.
Use a heavy, accurate straight-edge and feeler gages to check for transverse and longitudinal warpage. See Figure 1-39. Figure 1-39 Checking Firedeck Straightness All information subject to change without notice. (Rev. 2005) 6SE483 0507 Copyright © 2005 DETROIT DIESEL CORPORATION 1-49