Jonathan Pounsett Posted January 25, 2022 Share Posted January 25, 2022 (edited) Is there a spring between the lower bearing and the UJ? I’m sure there was one when I took it to bits, but the diameter of the spring I have looks too large. If it were a bit smaller it would fit nicely into the groove in the lower bearing. Thanks 🙂 Edited January 25, 2022 by Jonathan Pounsett Quote Link to comment Share on other sites More sharing options...
cam.in.head Posted January 25, 2022 Share Posted January 25, 2022 there most certainly is yes. without a spring the lower bearing will have sideways movement. im pretty sure it is how you describe.its a close fit on theshaft and rests on the groove on the bottom bearing. 1 Quote Link to comment Share on other sites More sharing options...
Jonathan Pounsett Posted January 25, 2022 Author Share Posted January 25, 2022 Okay I need to look for another spring then. Mine has an internal diameter of about 25mm. To be snug on the shaft it would need to be 15 to 20mm. Quote Link to comment Share on other sites More sharing options...
mantasrme Posted January 25, 2022 Share Posted January 25, 2022 From memory 25mm sounds about right for the spring, the shaft is 19mm and its not a really tight fit. I can check tomorrow when i'm at my unit 1 Quote Link to comment Share on other sites More sharing options...
Jonathan Pounsett Posted January 25, 2022 Author Share Posted January 25, 2022 Thanks David - that would be great. 👍 Quote Link to comment Share on other sites More sharing options...
mantasrme Posted January 26, 2022 Share Posted January 26, 2022 It measures 24mm diameter 36mm long and has 4.75 full coils with the top and bottom flattened out. The wire is 2mm thick and is not a stiff spring at all. It does sit into the circle in the lower bearing plastic. 2 Quote Link to comment Share on other sites More sharing options...
Jessopia74 Posted January 26, 2022 Share Posted January 26, 2022 4 hours ago, mantasrme said: It measures 24mm diameter 36mm long and has 4.75 full coils with the top and bottom flattened out. The wire is 2mm thick and is not a stiff spring at all. It does sit into the circle in the lower bearing plastic. Great info that, turns out this reminded me I have one missing and perhaps the other one I do have might have lost its strength anyway over the years. Is that 24mm Inside diameter mate? Flexosprings.com seems to have a great tool for specifying a replacement, possibly a group buy. 1 Quote Link to comment Share on other sites More sharing options...
mantasrme Posted January 26, 2022 Share Posted January 26, 2022 Yes all measurements are external. They don't have a lot of strength to start with they are only to stop the inner plastic race from dropping down. Although if its ion good condition it souldn't be able to drop out anyway. They certainly take some levering to get the inner to pop out from the outer when i take the bearings apart. Thomas has them at https://www.edelschmiede.com/shop/Compression-spring-steering-rod-on-U-joint-Opel-Ascona-Manta-B although they look slightly different to the ones on all the columns in my place. They don't flatten at the ends like all my originals do. Not that it matters but i wonder if they changed them or its a superseded part thats different 1 Quote Link to comment Share on other sites More sharing options...
Jessopia74 Posted January 26, 2022 Share Posted January 26, 2022 1 hour ago, mantasrme said: Yes all measurements are external. They don't have a lot of strength to start with they are only to stop the inner plastic race from dropping down. Although if its ion good condition it souldn't be able to drop out anyway. They certainly take some levering to get the inner to pop out from the outer when i take the bearings apart. Thomas has them at https://www.edelschmiede.com/shop/Compression-spring-steering-rod-on-U-joint-Opel-Ascona-Manta-B although they look slightly different to the ones on all the columns in my place. They don't flatten at the ends like all my originals do. Not that it matters but i wonder if they changed them or its a superseded part thats different Probably aftermarket replacement. 1 Quote Link to comment Share on other sites More sharing options...
Jonathan Pounsett Posted January 27, 2022 Author Share Posted January 27, 2022 The one I have is 29mm id. In all other respects it looks like the right one. What happens to its performance if I wind it a bit tighter to achieve a 19 - 20mm id? <27mm od. Quote Link to comment Share on other sites More sharing options...
cam.in.head Posted January 27, 2022 Share Posted January 27, 2022 just checked mine for you. mine definately sits nicely in the lower bearing groove.and acloser fit on theshaft although ANY spring if located between the uj and the nylon bearing should do its job. its not there to stop the inner race falling out ( obviously it could do without a spring albeit not easily) but its the fact that the inner race has a curved inner side and the matching surface on thestatic part also has a curved outer side. between these are the small ball bearings .the spring pushes both curved sections into the balls eliminating any sideways movement. known as an angular contact or thrust bearing. often used in more extreme structure in electric motors running downward mounted pumps where the downward weight pulling the bearing takes up all the play and allows it to run "shaft weight down" 1 1 Quote Link to comment Share on other sites More sharing options...
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