Detroit Diesel MBE 4000 Service Manual page 60

1.2 CYLINDER HEAD
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5. Using the head bolt impact socket (J 45389 or 422 589 00 09 00), install the cylinder
head bolts.
NOTE:
For the correct tightening sequence, see Figure 1-7. Listed in Table 1-4 are the specific
stages in the tightening sequence.
Figure 1-7
Size
M15 x 2
Table 1-4 Tightening Stages, Cylinder Head Bolts
NOTE:
If the stretch bolt tightening torque is exceeded, remove it, check its maximum permissible
shaft length (replace if necessary), and tighten it from Stage 1. Unconditionally replace
all bolts whose shaft length exceeds the maximum permissible value.
6. Replace the seal rings and connect the fuel return line to the cylinder head.
7. Replace the seal rings and install the constant-throttle line on the cylinder head.
1-12
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Tightening Sequence, Cylinder Head Bolts
Max. Shaft Length
212.0 mm (8.35 in.)
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Tightening Stage
Stage 1
Stage 2
Stage 3
Stage 4
Stage 5
Stage 6
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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Torque Value (Repair
work in the field)
10 N·m (7 lb·ft)
50 N·m (37 lb·ft)
100 N·m (74 lb·ft)
200 N·m (148 lb·ft)
90 more
90 more
All information subject to change without notice.
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