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TM 5-4320-308-13
5-8. REPAIR/REPLACE CRANKCASE (Continued)
CLEANING/INSPECTION:
WARNING
Death or serious injury could occur if fuel is not handled carefully. Use in a well-ventilated area
away from open flame, arcing equipment, ignition sources, heaters, or excessive heat. Always
store fuel in proper, marked containers. DO NOT SMOKE
Death or serious injury could occur if compressed air is directed against the skin. Do not use
compressed air for cleaning or drying unless the pressure is/has been reduced to 30 psi (2. 06 bar)
or less. When working with compressed air, always use chip guards, eye protection, and other
personal protective equipment
Live steam used for cleaning shall not exceed 100 psi (6. 9 bar). Use goggles or face shield for eye
protection. Do not direct live steam against skin.
1 Clean crankcase thoroughly with live steam. Clean all exterior openings and surfaces. Be especially sure to
clean all oil passages to make sure they are clear. Use a small and/or large wire bristle brush where necessary
to remove carbon or other deposits from openings and surfaces. Use diesel fuel as necessary to soften and
remove carbon or hardened oil deposits. Dry with compressed air.
2 Inspect crankcase for any cracks, discoloration, distortion, rust, corrosion, or other damage. Use MIL-1-6868
magnetic particle inspection to detect cracks. If crankcase is cracked, distorted, overheated, seriously rusted or
corroded on machined surfaces, or exhibits other serious damage, replace crankcase.
3 Inspect two studs (9), two studs (10), and two studs (11) for thread damage. If damaged, replace studs
REPAIR/ASSEMBLY:
1 Lubricate joint (8) with lubricating oil and install on oil drain plug (7). Install oil drain plug
2 Install cylinder pin (6)
3 If damaged, remove two studs (10) and two studs (11) and install new studs
4 If damaged, remove two studs (9) and install new studs
5 Lubricate preformed packing (5) with lubricating oil and install on cap screw (4). Install cap screw
6 Lubricate preformed packing (3) with lubricating oil and install on oil dipstick (1). Install oil dipstick into
crankcase (2)
5-27/(5-28 blank)
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