TM 5-2420-230-24-2
Crankshaft (001-016)
B3.9 and B5.9 Series Engines
Page 1-48
Section 1 - Cylinder Block - Group 01
Clean (001-016-006)
Use fine crocus cloth to polish the machined surfaces.
Use a bristle brush to clean the oil drillings.
Inspect for Reuse (001-016-007)
Inspect the threaded capscrew holes for damage.
Use one of the following methods to repair any threaded
holes:
Chase the threads
Use the threaded insert kit, Part No. 3822709.
NOTE: If more than two threaded holes are damaged in one
end, the crankshaft must be replaced.
Measure the front and rear oil seal contact areas for a wear
groove.
Crankshaft Front and Rear Oil Seal Wear Groove
mm
in
0.25
MAX
0.010
Front and rear wear sleeves are available for a crankshaft
that is worn beyond the limit.
Inspect the crankshaft connecting rod and main journals
for deep scoring, overheating, etc.
L-726