TM 5-2420-230-24-2
Bearings, Connecting Rod (001-005)
B3.9 and B5.9 Series Engines
Page 1-6
Section 1 - Cylinder Block - Group 01
A connecting rod noise occurs when the engine is not
loaded. Check by first applying a load, and then unloading
and listening for the noise.
The connecting rod bearing shells are identified by steel-
stamped characters on the back of the bearings. The char-
acters indicate either standard (STD) or the amount of
oversize (OS).
Preparatory (001-005-000)
WARNING
Some state and federal agencies have determined that
used engine oil can be carcinogenic and cause repro-
ductive toxicity. Avoid inhalation of vapors, ingestion,
and prolonged contact with used engine oil.
WARNING
To avoid personal injury, avoid direct contact of hot oil
with your skin.
Drain the lubricating oil. Refer to Procedure 007-025.
Remove the lubricating oil pan and gasket and suction
tube. Refer to Procedures 007-025 and 007-035.
Remove (001-005-002)
Engine Barring Tool, Part No. 3824591
Using the barring tool, Part No. 3824591, rotate the crank-
shaft to the bottom dead center (BDC) position of the con-
necting rod.
L-684
