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Austinsevenfriends
Manufacturing marks or wear? - Printable Version

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Manufacturing marks or wear? - Ruairidh Dunford - 18-09-2018

I have seen similar but not as pronounced, anybody know what for sure?

   

RE: Manufacturing marks or wear? - Mike Costigan - 18-09-2018

I don't know for sure, but that looks like machining marks made during manufacture. I cannot see how it could be wear related.

RE: Manufacturing marks or wear? - AllAlloyCup - 18-09-2018

Hi Ruairidh
Have you counted them and perhaps they
Match with the gear teeth?

If so perhaps the gear cutter was having a fag?

Bill G

RE: Manufacturing marks or wear? - mk1-mark - 18-09-2018

They look like Broach marks where the gear cutting broach has been allowed to over run slightly.  Not very attractive, but nothing to worry about.

RE: Manufacturing marks or wear? - JohnD - 18-09-2018

I noticed these on the Cup's clutch last week, they were not all the way around tho, only on the one side, i will try and get a photograph tonight before i put the box on.

RE: Manufacturing marks or wear? - Ruairidh Dunford - 18-09-2018

The markings look fresh compared to the rest of the plate...

RE: Manufacturing marks or wear? - Reckless Rat - 18-09-2018

Looking at the striations and shape of the marks they appear to be identical and relate to the number of splines on the shaft - is there a gap where the blind spline should be? They do look recent but that might just be a trick of the light. You've not been cleaning the splines up with a 9" angle grinder have you? Smile

RE: Manufacturing marks or wear? - Steve Bryant - 18-09-2018

(18-09-2018, 12:27 PM)Ruairidh Dunford Wrote: The markings look fresh compared to the rest of the plate...

They're definitely are not the same age colour as the rest of the metal, so would suggest wear.
Stephen

RE: Manufacturing marks or wear? - Chris KC - 18-09-2018

I'm struggling to imagine what could cause a wear pattern like this. I'm with reckless, looks like someone has tried to clean up the splines with an angle grinder...

RE: Manufacturing marks or wear? - Speedex750 - 18-09-2018

Are the marks in line with the teeth or the valley between? Could the clutch plate come back far enough to chatter against the gearbox primary splines?