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Collection, Preservation and Display of Old Lawn Mowers

Suffolk points seized on shaft

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Any idea how to free off the points that are stuck on the shaft? which is rotating with the points, have tried plusgas but they are firm and i am worried about breaking the Paxolin?

Once off i can reface the points and tighten the shaft.

Forums

wristpin Wed, 12/06/2024

Been there, done that and had to glue them back together with a thin metal splint. Faced with the problem again is to try and draw the  moving point off the shaft . I just wonder that as the pivot is rotating , perhaps you can drill out its crimp enough to release it from the stator plate so that you then have the rocking point and stud where you can apply gentle end pressure rather than leverage that will snap the rocking point across the weak area . I’m envisaging a nut with a bigger bore than the pivot stud and then it clamped in the vice and gentle inward pressure applied. Assuming that frees it off , it’s just a matter of refitting the pivot pin - pressing it back in to the stator plate and hard soldering.

While you may want to preserve the original points , even 50 years down the line, they are not scarce. Plenty of scrap engines around with that style of points or slightly later ones with the later style of points that were still current in the 1970s. You may even find that Jon Cruse at the Hailsham Mower Centre or George at Villiers Parts may still have originals in their Wipac wrapping paper.

 

jarrett Fri, 14/06/2024

Thanks You, removing the pivot would not be a problem but the baseplate is some sort of Mazak so might well have trouble re fixing with hard soldering, may well measure up the the post and see if i have anything a suitable size to replace the existing one if it all goes per shaped.