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TM 5-2410-237-23
CRANKSHAFT AND BEARINGS ASSEMBLY MAINTENANCE - CONTINUED
0245 03
CLEANING AND INSPECTION
WARNING
Solvent cleaning compound MIL-PRF-680 Type III is an environmentally compliant and low toxic
material. However, it may be irritating to the eyes and skin. Use protective gloves and goggles. Use in
well-ventilated areas. Keep away from open flames and other sources of ignition. Failure to follow this
warning may cause injury or death.
Particles blown by compressed air are hazardous. DO NOT exceed 15 psi (103 kPa) nozzle pressure
when drying parts with compressed air. DO NOT direct compressed air against human skin. Failure to
follow this warning may result in injury. Make sure air stream is directed away from user and other
personnel in the area. To prevent injury, user must wear protective goggles or face shield.
1.
Clean outside of crankshaft with solvent cleaning compound and dry thoroughly with low pressure air or less.
CAUTION
If crankshaft is not to be inspected immediately (less than 1 hour after it is cleaned), lubricate bearing jour-
nals with clean oil to prevent corrosion.
2.
Visually inspect and replace crankshaft if there is/are:
a.
Large, deep cracks or broken material throughout crankshaft, especially in fillet and journal areas.
b.
A high concentration of depressions or pitting.
c.
Burning or scoring in journal areas.
d.
Cracks in oil holes.
e.
Damage to the tapered end of shaft, keyway, and gear that cannot be corrected by simple filing or polishing.
3.
Install main bearing caps without lower bearing halves. Use a wrench to tighten capscrews to 27-33 lb-ft (37-45 Nm)
and take measurements as shown below.
0245 03-5
Change 1

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