A. Measure camshaft lobe height (B) on one
exhaust and one intake lobe.
B. Measure base circle (C) of one exhaust and
one intake lobe.
C. Subtract base circle (STEP B) from lobe
height (STEP A). The difference is actual
lobe lift (A).
D. Specified camshaft lobe lift (A) is .3300 in.
(8.382 mm).
AIR INLET AND EXHAUST SYSTEM
TESTING AND ADJUSTING
TM 5-3805-263-14&P-2
PROCEDURE FOR MEASURING
CAMSHAFT LOBES
To find lobe lift, use the procedure that follows:
Maximum permissible difference between actual
lobe lift (STEP C) and specified lobe lift (STEP D) is
.010 in. (0.25 mm).
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