TM 5-3805-281-24-2
Crankshaft, Main Bearings, and Flywheel
IMPORTANT: Small cracks may not be visible to the
eye. Use a method such as the
Fluorescent Magnetic Particle method.
This method magnetizes the crank,
using magnetic particles which are
fluorescent and glow under `black light'.
The crankshaft must be de-magnetized
after inspection.
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1923OCT972/2
MEASURE ASSEMBLED I.D. OF BEARINGS
AND O.D. OF CRANKSHAFT JOURNALS
NOTE: Also inspect and measure assembled I.D. of
connecting rod bearings. Compare measurements
with connecting rod journal O.D. on crankshaft.
(See Group 10.)
1. With crankshaft removed from engine, install main
bearing caps with bearing inserts. Be sure inserts are
installed correctly.
2. Tighten main bearing cap screws to 230 Nm
(170 lb-ft).
3. Measure I.D. of all assembled bearings with an inside
Measuring Main Bearings
Main Bearing--Specification
ID ............................................................................... 95.270--95.320 mm
(3.7508--3.7528 in.) with bearing
ID ........................................................................... 101.651--101.677 mm
(4.0020--4.0030 in.) without
bearing
Continued on next page
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