replace jack shaft bearings

[cooldad]

Help,

I have a yerfdog kart with a comet torque converter. I can't seem to disassemble the jack shaft in order to put new bearings in.
Any thoughts?

 

[anderkart]

Seems like someone posted a simalar thread here a while back and after he'd removed all the obvious hardware we finally discovered his bearings were retained to the shaft with some form of snap rings. I was thinking yours might be the same.

 

[r_chez_08]

pics?

 

[cooldad]

Jack Shaft Bearings

Thanks for looking.

Here are some pics.
One end of the shaft has a welded cap on it. The other end has a keyway with the sproket (which seems fairly loose)and parts to the torque converter which doesn't want to budge. I have used a flywheel puller, any tighter and something might bend or break.
Am I missing something?

 

[newrider3]

Hose it down with PB Blaster and try the puller again. There aren't any apparent set screws to hold it on, so it's probably just seized.

 

[Kaptain Krunch]

Is it threaded on? i do see some threads.

 

[newrider3]

I'm sure there was a nut on the end to hold everything together, not sure why the driven itself would screw on.

 

[Daveon]

i had that problem with mine, soak it with the Blasters, let it sit, apply heat to the shaft and use your puller again. But be careful, when mine broke free it made a loud pop and hot Blasters sprayed out. My kart sat under water in a pond for two weeks then about 7 years in a barn before I got it.

 

[newrider3]

Heat the pulley, not the shaft. If you make the shaft expand it'll only get more stuck.

 

[cooldad]

Thanks for the advice guys.
I cut the weld on the back of the shaft hoping i could just replace the bearings and re weld, never having to get the torque converter parts off. Sadly, the shaft is badly worn and has to be replaced.
I will try more heat, more PB Blaster, and maybe a bigger hammer.

Thanks again

 

[newrider3]

Try going the other way now?