Fresh T90, Shifting Issues

So I rebuilt my t90, first time.

New gears, new cluster gear, new input shaft, new syncros.. the only thing reused was the output/main shaft.

Shifts into 2 and 3 great.

After coming to a stop, sometimes (like 1 every 10 times) it won't go into 1st or R but just slightly. If I can roll forward a little, it will slide right in.

Did I do something wrong when rebuilding? Or is this some sort of break in period lol. Its probably had 400 miles on it after the rebuild.

Thanks!

 

The non-synchro gears (1st and reverse) slide to engage with other gears, so they are more likely to be tip-to-tip where they won't slide together. (The synchro collars have more, smaller and more beveled teeth, so they are a lot less likely to hang when not moving). Clutch out, clutch in, let the gears spin down, and they'll probably mesh. I expect this will happen less as the gears wear-in to their new mates.

 

Once you grind them a few times the sharp edges will be knocked of and it will shift better

 

Two words… Double-Clutch.

A old-time man-skill, easily mastered. Then you can pretend you are driving a big rig or a race car.