A. Measure camshaft lobe height (B) on oneexhaust and one intake lobe.B. Measure base circle (C) of one exhaust andone intake lobe.C. Subtract base circle (STEP B) from lobeheight (STEP A). The difference is actuallobe lift (A).D. Specified camshaft lobe lift (A) is .3300 in.(8.382 mm).AIR INLET AND EXHAUST SYSTEMTESTING AND ADJUSTINGTM 5-3805-263-14&P-2PROCEDURE FOR MEASURINGCAMSHAFT LOBESTo find lobe lift, use the procedure that follows:Maximum permissible difference between actuallobe lift (STEP C) and specified lobe lift (STEP D) is.010 in. (0.25 mm).1-61
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