CLEANING AND INSPECTION - TM-5-2410-237-231333

TM 5-2410-237-23

CRANKSHAFT AND BEARINGS ASSEMBLY MAINTENANCE - CONTINUED

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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.

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.

Visually inspect and replace crankshaft if there is/are:

Large, deep cracks or broken material throughout crankshaft, especially in fillet and journal areas.

A high concentration of depressions or pitting.

Burning or scoring in journal areas.

Cracks in oil holes.

Damage to the tapered end of shaft, keyway, and gear that cannot be corrected by simple filing or polishing.

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.

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