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Cam Indexing

Hypalon covered stop must be installed in correct cam plate control slot (some cams have size of slot in degrees stamped near slot). Measure length of slot used on old cam and use corresponding slot on new cam.

CAUTION: Maximum advance will be incorrect if wrong slot used.
Fig 1: DOUBLE DIAPHRAGM VACUUM ADVANCE UNIT
G09325438Courtesy of FORD MOTOR CO.
Fig 2: FORD DUAL ADVANCE DISTRIBUTOR ASSEMBLY
G09325437Courtesy of FORD MOTOR CO.