2 replies to this topic

[HazleNut21]

Hi All,

 

Query is as above really, I have re built the gear box and before tightening up the end two nuts I thought I would check to see if I could select all 4 gears, all the selections require a decent amount of force, when I come to 4th the selector seems to be pushing the syncro too far over onto 4th gear, and ends up clashing with the gear on the lay shaft. This is rectified by a small tug backward on the selector shaft and all is well. Once it has tugged back I cant push it back into the problem position it seems to only be when selecting it from natural/3rd gear.

 

Any advice is appreciated, I would have thought the dowl in the side of the selector mechanism would have stopped this happening, but clearly it seems possible, would rather not put it back in the car and shred the lay gear first time I move into 4th :)

 

Thanks,

 

 

[floormanager]

I presume you are building up a rod change box?  Be careful as I was playing with the gears during a rebuild and the 3/4 synchro hub moved too far over and the little balls and springs fired out!  I can't recall on a rod change box what stops the synchro hubs going too far.  I found out the hard way on a remote box it's the main bearing C bracket. 

 

Presumably you've built the synchro hub the correct way?  It's easy to get them wrong.

 

Useful thread

https://www.theminif...mal/?hl=synchro

Edited by floormanager, 16 April 2021 - 08:33 PM.

[HazleNut21]

Yes it is a rod change box, that thread does seem like the issue has been seen before, guess I might have to strip it back and take a look at the selector fork mechanism it is as described "over shifting" ever so slightly, as if the stop isn't doing its job quite right!