II. Engine Component Description
U L-Series Diesel 11
Crankshaft
The crankshaft is forged steel with induction
hardened main and connecting rod journal
surfaces. Induction hardening is applied to the
friction surfaces of the journals, crank pins and
oil seal surfaces to improve wear resistance.
The crankshaft has the engine configuration
number cast on the crankshaft for
identification.
Each rod journal has its own set of counter
weights to simplify balancing and help reduce
crankshaft vibrations. Certain L-Series engines
are externally balanced with the use of weights
on the crankshaft damper.
dampers should NEVER be interchanged.
Excessive engine vibration and damage will
occur.
IMPORTANT: The crank is hardened
using Tufftriding. Isuzu does not
recommend grinding the crankshaft
undersize.
Engine Config #
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