Quantcast FIGURE 3-111.  Measuring Camshaft Journals

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ARMY TM 9-2815-255-24 AIR FORCE TO 38G1-95-2 MARINE CORPS TM 2815-24/4 FIGURE 3-111.  Measuring Camshaft Journals e. Measure camshaft lobe height as follows: (1) Measure  each  camshaft  lobe  at  highest  point  and  at  narrowest  point,  refer  to  FIGURE  3-112.    Subtract narrowest dimension from highest dimension to find camshaft lobe height.  If height is not correct on any lobe, install a new camshaft. (2) Intake lobe should be 0.273 to 0.292 inch (6.93 to 7.42 mm), with a minimum acceptable lobe height of 0.263 inch (6.68 mm). (3) Exhaust lobe should be 0.266 to 0.286 inch (6.76 to 7.26 mm), with a minimum acceptable lobe height of 0.256 inch (6.50 mm) FIGURE 3-112.  Measuring Camshaft Lobe Height f. Inspect cam followers in accordance with instructions in paragraph 3-34.4. 3-40.3.  Installation. a. Install gear (5, FIGURE 3-108) as follows: (1) Install key (6) in camshaft. (2) Install gear (5) with timing mark facing away from camshaft (3), aligning slot in gear with key (6). (3) Using a tubular driver, press gear (5) on camshaft (3) until gear is flush with shoulder on camshaft. b. Coat camshaft lobes and cam followers (2) with a general purpose grease (630AA). c. Make sure engine is at TDC, (No.  1 piston on compression stroke) with timing pin engaged in flywheel. 3-162


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