TM 5-2420-230-24-2
B3.9 and B5.9 Series Engines
Bearings, Main (001-006)
Section 1 - Cylinder Block - Group 01
Page 1-17
Install (001-006-026)
CAUTION
Do not lubricate the side that is against the cylinder
block. Engine failure can occur.
Apply a coat of clean lubricating engine oil to the new upper
main bearings.
NOTE: Used bearings must be installed in their original
location.
Position the new main bearing on the crankshaft, and in-
stall as far as possible by hand.
Using the pin and rotation of the crankshaft, finish pushing
the main bearing in slowly, being sure it is aligned with the
cylinder block. Make sure the tang on the main bearing sets
into the notch.
Make sure the pin does not slide under the bearing.
L-695