Quantcast CLEANING - TM-9-2320-269-34-10137

 

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REMOVAL - CONTINUED - TM-9-2320-269-34-10136
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TM-9-2320-269-34-1 Truck Telephone Maintenance Utility C/S 36 000 GVW 6 X 4 W/WN WI/E M876 (NSN
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INSPECTION/REPLACEMENT- CONTINUED - TM-9-2320-269-34-10138
TM 9-2320-269-34-1
CRANKSHAFT AND MAIN BEARINGS - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
CLEANING
NOTE
For more information on how to clean parts, go to General Maintenance Instructions (page 2-46).
WARNING
Solvent burns easily. Solvent fumes can explode. Do not smoke or allow open flame nearby when using
solvent. Failure to observe these precautions could cause serious injury or death.
20.
All metal parts
a.
Clean in drycleaning solvent.
b.
Wipe dry with clean, dry rags.
INSPECTION/REPLACEMENT
NOTE
For more information on how to inspect parts, go to General Maintenance Instructions (page 2-46).
Replace damaged or defective parts as needed.
CAUTION
Because of heat treatment, no attempt should be made to regrind journals for use of undersize bearings.
Grinding will cause tiny cracks at the fillet areas which will lead to crankshaft breakage and serious damage
to the engine.
21.
Crankshaft (1)
a.
Look for cracks, scratches, nicks, and
score marks.
b.
Look at keyway for cracks and wear.
c.
Look at journals for discoloration
caused by overheating.
If crankshaft has been overheated,
heat treatment has been destroyed
and crankshaft must be replaced.
d.
Using micrometer, measure journals.
Main journal diameter must be
3.1235 - 3.1245 inches (79.34 -
79.36 mm). Connecting rod
journals diameters must be 2.753 -
2.754 inches (69.93 - 69.95 mm).
2-120

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