INSPECTION OF CAMSHAFT AND BALANCE SHAFT

TM-5-4320-300-14 Pump Centrifugal Self-Priming Gasoline Engine Driven; 6-Inch 1500 GPM Capacity At 60 Foot Head Manual
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TM 5-4320-300-14 6-9. VALVES, CAMSHAFT, AND TIMING GEARS (CONT) Location/Item Action Remarks INSPECTION OF CAMSHAFT AND BALANCE SHAFT 17. Cams and Inspect for wear and scoring. If cams are scored, journals inspect cam follower rollers in accordance with paragraph 6-7. Replace camshaft if cams or journals are worn or scored. Replace balance shaft if journals are worn or scored. 18. Camshaft and Replace camshaft or balance shaft if either is balance shaft bent or damaged. 19. Contact sur- Examine surfaces which thrust washers contact; faces if surfaces are scratched but not severely scored, smooth them down with an oil stone. If the score marks are too deep to be removed, replace camshaft or balance shaft. 20. Shaft and Measure the inside diameter of the camshaft or bearing balance shaft bearing at 90 degree axis as shown. clearance Then measure the outside diameter of the appro- priate camshaft or balance shaft bearing journal. The clearance (difference between meas- urements) for new camshaft or balance shaft bearings should be 0.0045 to 0.006 inch (0.1143 to 0.1524 mm) or for worn parts a maximum of 0.008 inch (0.2032 mm). Replace shafts or bear- ings as needed to restore tolerance. 6-63

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