Quantcast TABLE 3-5.  Camshaft Component Wear Limits - TM-9-2815-253-24_76

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ARMY TM 9-2815-253-24 AIR FORCE TO 38G1-93-2 MARINE CORPS TM 2815-24/3 CAUTION No attempt must be made to remove pinion gear from camshaft.  Camshaft and gear are supplied as an assembly. 3-29.2.  Inspect and Measure. a. Examine camshaft bushing for scars or wear. b. Check camshaft gearwheel and crankshaft pinion teeth for wear. c. Ensure cams are not chipped or damaged. d. Check tappets for damage to contact face. e. Using appropriate measuring devices check components listed in TABLE 3-5 for wear.  Replace components that exceed maximum clearance. f. Check gear end of shaft for nicks and burrs. TABLE 3-5.  Camshaft Component Wear Limits Initial Dimension Maximum Clearance Components inches (mm) inches (mm) Gear end camshaft bushing bore 1.378 (34.990) 1.381 (35.085) 0.007 (0.17) Gear end camshaft journal diameter 1.3765 (34.965) 1.3771 (34.980) Center camshaft bushing bore 1.379 (35.030) 1.381 (35.070) 0.007 (0.17) Center camshaft journal diameter 1.3765 (34.965) 1.3771 (34.980) Flywheel end camshaft bushing bore 1.379 (35.030) 1.381 (35.070) 0.007 (0.17) Flywheel end camshaft journal diameter 1.3765 (34.965) 1.3771 (34.980) 3-29.3.  Installation. a. Carefully install camshaft (3, FIGURE 3-34) into crankcase keeping it square at all times.  Take care to line up '0' timing marks on crankshaft and camshaft gears exactly. b. Rotate camshaft (3) until large holes in gear line up with bolt holes in thrust plate. c. Turn thrust plate as necessary to install two capscrews (1) and new lockwashers (2).  Tighten capscrews (1) to 75-80 in-lbs (8.4 to 9.0 Nm). d. Check camshaft end play as follows: (1) Push camshaft towards flywheel end. (2) Install a dial indicator in position against gear wheel. (3) Zero the dial indicator. (4) Move camshaft as far as it will go towards gear end.  Movement recorded on the dial indicator should be 0.004 to 0.011 in.  (0.10 to 0.28 mm). 3-59


 


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