[Mg-t] Gearbox jumping out

[Duvall Video Productions]

Doug,  I have a rebuilt 1950 gearbox that had similar trouble with  
third gear.  I researched and got feedback and finally decided to  
check the selector balls that lock out the shift selector rods.  I  
discovered it shifted well with the cover off.

Upon closer examination, I discovered the 3rd/4th gear selector shaft  
was too long and hit the rear of the housing preventing it from  
staying in third gear.  I found this out by putting paint on the end  
of the shaft and carefully put the shifter housing back on, put it in  
third gear a few times and then pulled the cover again.  sure enough  
it left paint on the housing.

I bought the car taken apart and I had an an extra selector shaft.  I  
measured and sure enough, there was a difference in length.

I ground 1/2" off the end of the selector shaft and it shifted fine.

Might be worth looking at.....

Mike
On Apr 15, 2009, at 9:39 PM, Douglas Ormrod wrote:
>
> Since I recommissioned the car after a ground up 2 years ago it has
> jumped out of third gear when changing down (most times). It stays in
> going up through the gears if you keep the power on - but lift your  
> foot
> in third and it pops out. I did rebuild the box with all new bearings,
> seals, rollers, a new first gear etc. - but obviously missed doing
> something I should have done.