daverclasper Posted December 19, 2018 Report Share Posted December 19, 2018 I did try some heat. Maybe just a very tight interference shaft to bearing?. I guess a slide hammer could have worked as the bearing to case wasn't too tight. Link to comment Share on other sites More sharing options...
Pete Lewis Posted December 19, 2018 Report Share Posted December 19, 2018 In all the years I have never needed any special pullers, leave the outer race circlip in place tap shaft thro the race tap the race from the case with a drift in the cut out , doing both at the same time if you like Re assemble a 4 sync vertically support mainshaft on a dummy input in a vice lower case and mainshaft over and tap bearing needs extra pair of hands but this stops the lst 2nd collets from continually dropping out , let gravity work for you Pete Link to comment Share on other sites More sharing options...
kramnamrof Posted December 21, 2018 Author Report Share Posted December 21, 2018 All disassembled now and guess what I found, broken springs in the 1st/2nd gear synchro hub. I guess this has resulted in more wobble in the outer gear which in turn has caused the wear on the inner hub spines. The hunt is now on for a replacement hub assembly. Link to comment Share on other sites More sharing options...
Pete Lewis Posted December 21, 2018 Report Share Posted December 21, 2018 Ive never seen one that bad, if you consider the torque thats going through this assy the balls and springs have no effect on the wear Shown once they have left the out of gear detent they just press on the inside of the sleeve, they have nothing to do with the loads transmitted they only affect the snappiness of the gear change making it a postive action, Pete Link to comment Share on other sites More sharing options...
kramnamrof Posted December 30, 2018 Author Report Share Posted December 30, 2018 I have managed to source a NOS synchro hub assembly (part number 156911 33 tooth) however it dosed't fit on the mainstay. It will engage 3/4mm onto the drive spines then jams solid. The issue appears to be the gaps between the splines on the hub are too narrow. My old one by comparison is quite a sloppy fit on the splines. Did Triumph have different spline sizes on hubs but with the same part numbers. Link to comment Share on other sites More sharing options...
Pete Lewis Posted December 30, 2018 Report Share Posted December 30, 2018 No but there are small differences with single rail and 3 rail look similar but fits of hubs is very different But I would run a carborundum stone down the mainshaft with the problems of your hub the mainshaft splines may have some small blemish Which is all it takes to jam a hub Pete Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now