B3.9 and B5.9 Series Engines
Section 1 - Cylinder Block - Group 01
The crankshaft uses forged counterweights.
Oversize main bearings and thrust bearings are available
for service. Cummins Engine Company, Inc., recommends
regrinding all of the main or the connecting rod journals
when one requires regrinding. Refer to the B Series Shop
Manual, Bulletin No. 3666017.
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.
Drain the lubricating oil; refer to Procedure 007-025.
Remove the fan pulley.
Refer to Procedure 008-039.
Remove the vibration damper.
Refer to Procedure 001-052.