DETROIT DIESEL 53
Flywheel Housing 1.5
housing, do not install the six bolts numbered 7 through 12 (Fig. 3) until the clutch housing is installed.
8.
On an In-line right hand rotation engine, start at No. 1 and draw the bolts up snug in the sequence shown in Fig. 3.
9. Refer to Fig. 6 for the final bolt tightening sequence on an In-line engine. Then start at No. 1 and tighten the bolts to
the specified torque.
Fig. 6 - Flywheel Housing Bolt Tightening Sequence (Operation 2)--In-Line Engine
a.
Tighten the 5/16 "-18 bolts (numbers 11 and 12) to 19-23 lb-ft torque and the 3/8 "-16 bolts (numbers 7 through
10) to 40-45 lb-ft torque. Tighten the remaining 3/8 "-16 and 3/8 "-24 bolts to 25-30 lb-ft torque.
NOTE: Prior to Engine Serial Number 3D-011 the bolts numbered 7 through 12
in Fig. 3 were all 5/16 "-18 bolts and must be tightened to 19-23 lb-ft torque.
b.
On the three cylinder engines, tighten the two 5/16 "-18 bolts that secure the top of the governor to the
flywheel housing to 10-12 lb-ft torque.
November, 1973
SEC. 1.5
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