CRANKSHAFT, MAIN BEARINGS, FLYWHEEL & CRANKCASE - CONT

CRANKSHAFT, MAIN BEARINGS, FLYWHEEL & CRANKCASE - CONT - TM-5-3820-256-24-5_275

CRANKSHAFT, MAIN BEARINGS, FLYWHEEL & CRANKCASE - CONT - TM-5-3820-256-24-5_277

TM-5-3820-256-24-5 Drilling System Well Rotary Truck Mounted Air Transportable 600 Feet Capacity Model LP-12 NSN 3820-01-246-4276 Manual
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SERVICE MANUAL CRANKSHAFT, MAIN BEARINGS, FLYWHEEL & CRANKCASE Section 6 Procedure: f. Locate leak. Drill through using a 1/8-27 NPTF or 1/4-18 NPTF tap drill, depending on size. Hole must be square with surface being repaired. g. Tap 1/8-27 or 1/4-18 NPTF. CAUTION: Do not over tap. Plug head must be above casting surface when installed. h. Clean chips and dirt from internal passages. i. Apply coat of Loctite #601 to O.D. of pipe plug; install plug. j. Allow 4 hours cure time. k. Grind protruding portion of plug flush with casting surface, if desired. Figure 21B. - Crankcase Casting Leak-Repair Areas CGES-185-3 PRINTED IN UNITED STATES OF AMERICA Page 17

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