The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => Gearbox, Clutch, Primary => Topic started by: jhg1958 on 13.12. 2019 15:35

Title: Layshaft and pinion
Post by: jhg1958 on 13.12. 2019 15:35

I need to replace the pinion (speedometer worm drive). It is fastened to the layshaft with a peg.  Will this just push out?  It looks almost riveted in that would need drilling out.  However, if i Drill badly any replacement pin will not stay in.

I have access to a press so at least it will not be a hammer job.

John

Title: Re: Layshaft and pinion
Post by: RDfella on 13.12. 2019 15:44

If my memory serves, the pin is peened over. Need to file it flush then tap it out with a pin punch.