25-09-2018, 09:08 PM
I've been cleaning up and reassembling the 4 speed box I have so I can mate it to the engine. As part of the cleaning I degreased it all in water based degreaser and then dried the parts with a hot air gun. That showed me the reason why the dog teeth are all loose, it's because the synchro cones have slipped down the splines. When I heated them to dry them they moved further. So I heated them up and used the vice to press the cones home again which seems to have done the trick.
The inter-shaft needle roller bearing is very loose but I know I can replace this with a bush from spares. I will replace all the springs and balls.
But what do you do about the layshaft bush? This seems quite worn.
![[Image: main.php?g2_view=core.DownloadItem&g2_it...1355ab7218]](http://www.asciimation.co.nz/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=10590&g2_serialNumber=2&g2_GALLERYSID=864497be74577d8591a75f1355ab7218)
This A7Club (http://austin7club.org/How%20To%2014.htm) link is very useful but from this it sounds like fixing this bush is a specialist job since it needs line reaming?
Simon
The inter-shaft needle roller bearing is very loose but I know I can replace this with a bush from spares. I will replace all the springs and balls.
But what do you do about the layshaft bush? This seems quite worn.
This A7Club (http://austin7club.org/How%20To%2014.htm) link is very useful but from this it sounds like fixing this bush is a specialist job since it needs line reaming?
Simon