3 Speed pops out of gear

[Jdgephar]

Hey Everyone,

My transmission started to pop out of 2nd gear today. I'm not sure if it's time for a rebuild, or if my floor shifter is out of adjustment.

Any suggestions, or time to pull it and rebuild?

 

[half cab]

Time to pull n rebuild most likely.

 

[DirtDonk]

Does it pop out while under power, or coasting?

Paul

 

[phldwsnoc1]

First things first

Make sure your linkage is moving the lever on the box fully into the second position. If it isn't, get that issue resolved first. If it is, take a look in the box. Good luck!

 

[Jdgephar]

Does it pop out while under power, or coasting?

Paul

It pops out while under power. Doesn't seem to matter how much either. It just started doing this yesterday. Never had an issue with it for the last 5 years otherwise.

 

[bluebronco69]

probably time for a rebuild then, but you could try adjusting, that is free!

 

[andyp]

Does it pop out while under power, or coasting?

Paul

Just curious what would be the problem if it popped out while coasting?

 

[68 EB]

Usually syncros are bad if it pops out under decel, thats what mine does in 1st. Anyone have a cheap 3spd laying around for a 68'?!

 

[Jdgephar]

Anyone have a cheap 3spd laying around for a 68'?!

x2...I'd like to swap something in while I rebuild my current one.

 

[phldwsnoc1]

Causes for failure to stay in selected gear

The causes for this are always, always one of the following:

The gear is not fully engaged. This can be due to external linkage, mounts, etc. or internal clearances allowing the shafts to walk fore and aft.

Wear on the mating surfaces of the speed gears and shift hubs. Which side is worn, power or coast, will determine whether it pops out under accel or decel.

That's it. I respectfully suggest that synchronizers will not cause this condition, ever. If ring replacement seems to repair this condition it is because the real cause was addressed while the box was apart.

Send a message if you need help inspecting internal parts. The wear you are looking for is not always obvious. I needed some coaching to spot it the first time. Good luck!

 

[gick70]

I have a good,cheap 3 speed laying around!

 

[68 EB]

The causes for this are always, always one of the following:

The gear is not fully engaged. This can be due to external linkage, mounts, etc. or internal clearances allowing the shafts to walk fore and aft.

Wear on the mating surfaces of the speed gears and shift hubs. Which side is worn, power or coast, will determine whether it pops out under accel or decel.

That's it. I respectfully suggest that synchronizers will not cause this condition, ever. If ring replacement seems to repair this condition it is because the real cause was addressed while the box was apart.

Send a message if you need help inspecting internal parts. The wear you are looking for is not always obvious. I needed some coaching to spot it the first time. Good luck!

Good to know. So its possible its not going into gear completely? Only does it in 1st gear on decel...every time! If i keep just a touch of throttle on it its fine. Sorry to hijack thread!