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Manufacturing marks or wear?

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Manufacturing marks or wear?
Ruairidh Dunford Offline
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#1
18-09-2018, 07:53 AM
I have seen similar but not as pronounced, anybody know what for sure?

   
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Mike Costigan Offline
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#2
18-09-2018, 08:30 AM
I don't know for sure, but that looks like machining marks made during manufacture. I cannot see how it could be wear related.
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AllAlloyCup Offline
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#3
18-09-2018, 09:12 AM
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
Based near the Scottish Border,
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mk1-mark Offline
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#4
18-09-2018, 10:58 AM
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.
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JohnD Offline
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#5
18-09-2018, 11:53 AM
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.
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Ruairidh Dunford Offline
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#6
18-09-2018, 12:27 PM
The markings look fresh compared to the rest of the plate...
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Reckless Rat Offline
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#7
18-09-2018, 01:29 PM
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
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Steve Bryant Offline
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#8
18-09-2018, 02:08 PM
(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
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Chris KC Offline
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#9
18-09-2018, 04:09 PM
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...
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Speedex750 Offline
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#10
18-09-2018, 04:21 PM
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?
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