Primary Chain Has Slight Piting on Rollers Harley Transmission, Harley Clutch & Harley Primary Discuss Primary Chain Has Slight Piting on Rollers in the Harley Tech & Harley How-to forums; Have 33,000 mi. on bike noticed about 33% of the rollers on the primary chain have clusters of "surface" pitting on them. On a scale of 1-10 about a (3) ...

[daveg95FXDL]

Have 33,000 mi. on bike noticed about 33% of the rollers on the primary chain have clusters of "surface" pitting on them. On a scale of 1-10 about
a (3) The pitting does "not" cover the complete circumference of the roller just @ random spots covering about a 1/3 of the roller & "not" on all rollers but on about 33% of the rollers. (Is this normal wear? or Do I reason for concern)

[Gas Man]

I haven't seen that before on a primary chain. However I must ask... do you do frequent short trips? Or park it in high humidity or damp area? Its takes a good deal of heat (miles) to vaporize off the condensation that accumilates in primary cases.