SERIES 60 SERVICE MANUAL 1.1.3.5 Inspection of Main Bearing Bores Perform the following steps for main bearing bore inspection: 1. Install the main bearing caps in their original positions. Lubricate the cap bolt threads and head contact surfaces with a small quantity of International Compound #2®. International Compound #2® is a registered trademark of IRMCO. 2. Install the main cap bolts and torque to 470-530 N·m (347-391 lb·ft). 3. Measure the main bearing bores using dial bore gage which has a dial indicator calibrated in 0.0001 in. increments. Set the cylinder bore gage on zero in master setting fixture. See Figure 1-16.
Figure 1-16 Gaging Main Bearing Bores The bore diameter specifications is 133.00-133.025 mm (5.236-5.237 in.). Line boring is also necessary when a bearing cap must be replaced due to breakage or spun-bearing damage. Refer to section ADDITIONAL INFORMATION1.A, for line bore specifications which are listed in Table 1-16. NOTE: Dial bore master setting fixture should be used to zero the cylinder bore gage. All information subject to change without notice. (Rev. 2005) 6SE483 0507 Copyright © 2005 DETROIT DIESEL CORPORATION 1-23