Article 1226 - Pivotless Ignition Point Wear Pattern

TSB #81 - December 8, 1967
(All 1968 Car and Truck)

The pivotless ignition contacts which are used in 1968 vehicles have an erosion pattern on the tungsten contact discs which is different than that observed on the pivot type contact used in previous model years. This wear pattern can be misdiagnosed as "misaligned contact" by those not familiar with the pivotless contact assembly. Fig. 1 shows a comparison of "normal wear pattern" for pivotless and pivot type contacts respectively.