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