Vintage Thumby: Identify & Assembly Drawing?
03-21-21, 02:28 PM
#1
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Vintage Thumby: Identify & Assembly Drawing?
Hello,
Trying to save these thumbies. I believe I have all the parts but could use a assembly drawing to ensure proper order of internal washers. Any help is appreciated!
Thanks,
Gary
Trying to save these thumbies. I believe I have all the parts but could use a assembly drawing to ensure proper order of internal washers. Any help is appreciated!
Thanks,
Gary
03-21-21, 04:56 PM
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That sure looks like these Suntour XC thumbies. Suntour XC MTB 3x6-spd Index / Friction Thumb Shifters / NOS Vintage- for sale online | eBay Dont know where to find the manual or blow- up diagram but you may have better luck searching or check YouTube videos.
03-21-21, 07:15 PM
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Since indexed shifters are not really thought of as being serviceable (campy excluded) the need for service diagrams is somewhat moot. Good luck. Andy
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AndrewRStewart
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03-21-21, 07:36 PM
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I'd lay out the various parts on my workbench in order as I disassembled them. A more techie person, I suppose, would take photographs during the disassembly process. Have you considered what you have to lose if you do it wrong?
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03-21-21, 09:15 PM
#6
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unfortunately I got these disassembled. I think I have found a reasonable image that shows the assembly. I will give it a go. And yes, I do not have much to loose. Thanks for the help!
03-21-21, 09:18 PM
#7
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Those are highly servicable. Same with the early indexed Shimano 600 SIS system and Dura Ace downtube shifters. The only thing is there is a notched washer that is prone to wear and you won't find replacement parts. But chances are good you could take apart that assembly, clean, remove corrosion, lubracate and re-assemble and it will improve, They're very simple, just pay attention to the parts and you disassemble it. It's the Shimano integrated road bike shifters that aren't servicable.
03-22-21, 07:56 AM
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Those are highly servicable. Same with the early indexed Shimano 600 SIS system and Dura Ace downtube shifters. The only thing is there is a notched washer that is prone to wear and you won't find replacement parts. But chances are good you could take apart that assembly, clean, remove corrosion, lubracate and re-assemble and it will improve, They're very simple, just pay attention to the parts and you disassemble it. It's the Shimano integrated road bike shifters that aren't servicable.
But the shifters are now the OP's so they can do whatever they wish to. The question was about seeking docs to help with taking apart and reassembling, and it's my suggestion that the companies had no business reason to offer such. Andy
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AndrewRStewart
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03-22-21, 08:21 AM
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Not the OP's exact model but possibly the same innards. euphras´s thoughts on (technical) things: How to touch up vintage SunTour index control thumbshifters
03-22-21, 10:27 AM
#10
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Yes that was the site I found that I am using for reference. The FD side I will wing it. We will see if I get indexing working again....fi not I will be OK with friction.
