INSPECTION (cont) - TM-5-1940-277-34

CRANKSHAFT INSPECTION AND REPLACEMENT INSTRUCTIONS (cont) - TM-5-1940-277-34_495

CRANKSHAFT INSPECTION AND REPLACEMENT INSTRUCTIONS (cont) - TM-5-1940-277-34_497

TM-5-1940-277-34 Boat Bridge Erection Twin Jet Aluminum Hull Model USCSBMK1 (1940-01-105-5728) Manual
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TM 5-1940-277-34 CRANKSHAFT INSPECTION AND REPLACEMENT INSTRUCTIONS (Continued) LOCATION ITEM ACTION REMARKS d. Crankshaft a. Inspect for (22) surface cracks along loading zones (see figure) using one of following methods: Magnetic Check any indica- Particle ted cracks with Method, a pointed instru- Fluorescent ment to determine Magnetic if it is a crack. Particle Scratch along Method, crack line to Fluorescent verify cracking. Penetrant Dye Method. b. Verify crack indications. c. Replace if cracked. d. Replace shaft if heat damage is indicated by discolora- tion. INSTALLATION 7. Crankshaft (22) a. Key (24) Install to posi- tion gear cor- rectly. b. Gear (23) Drive onto Use brass drift shaft. and ball peen hammer. 3-65

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