Detroit Diesel MBE 4000 Service Manual page 112

1.9 CRANKSHAFT ASSEMBLY
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9. Measure the shaft length of the main bearing-cap bolts. Replace any bolts that exceed the
maximum shaft length of 156.0 mm (6.14 inches). See Figure 1-47.
1. Main Bearing-Cap Bolt
Figure 1-47
10. Lubricate the main bearing-cap bolts with a light coating of clean engine oil. Install all the
M18 x 2 main bearing-cap bolts, in the correct order, as removed. Tighten each one in
four stages, listed in Table 1-12, stage by stage.
Max. Shaft Length: mm (in.)
156.0 mm (6.14 in.)
156.0 mm (6.14 in.)
156.0 mm (6.14 in.)
156.0 mm (6.14 in.)
Table 1-12 Tightening Stages, Main Bearing-Cap Bolts
11. Measure the crankshaft end play (fore-to-aft motion) at the center bearing journal.
Refer to section 1.9.2.1.
12. Install the pistons. Refer to section 1.17.2.
13. Install the oil pump and oil pan. Refer to section 3.4.3. Refer to section 3.1.2.
14. Install the flywheel and flywheel housing. Refer to section 1.12.2.
15. Install the front cover housing. Refer to section 1.10.2.
1-64
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Measuring a Main Bearing-Cap Bolt
Tightening Stage
Stage 1
Stage 2
Stage 3
Stage 4
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Torque Value: N·m (lb·ft)
100 (74)
200 (148)
300-330 (221-243)
90 degrees
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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All information subject to change without notice.
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