7 replies to this topic

[Aridgerunner]

Engine is out of the car on the stand with gearbox in place. I installed Minispares cross pin differential with the preload set to zero.

I installed the pot joint that is on the fan side with no problems. The pot joint on the flywheel side of the diff went on very hard. Once in place I couldn't turn it. I removed it and the shaft spins free. I then removed the circlip to make installing the pot easier. When it gets to about 90% of the way home I can no longer turn the pot. The pot on the fan side turns with an appropriate (I think) amount of resistance.

So, what did I do wrong?

Your help is always appreciated.

Bill

[alex-95]

Are they new pot joints? I had what sounds like the same problem, which is that the pot joint diameter that runs on the pot joint cover bush is now ground to a larger dimension, the only way to solve this is to machine or grind the pot joint to suit the pot joint cover or machine the pot joint cover to suit the pot joint.

[Aridgerunner]

They are new pot joints. I guess some disassembly may be happening soon. I thought I checked that. But my memory just ain't what it once was.

[Frisco]

Did you squeeze grease into the bearings by hand? 

[Earwax]

Give the splines and their counterpart fittings a good look and clean out - sometimes the circlip can get crushed and not be free to move and sometimes they can leave a little metal behind on the way out.  ( Swap the joints to see if the problem moves)

[Ethel]

Have you tried them on the opposite sides? If the problems stays with the joint that'd suggest the joint is the problem. If it doesn't it'd suggest the bush in the end cover.

 

 

Not sure if any misalignment with the output shaft & pot joint is possible, but you could try removing the end cover to see if the joint fits on the splines without it* and if the pot joint fits in the cover on its own.

 

*Figure out how to get the pot back off, if the circlip is fitted first.

[Aridgerunner]

The tight fit moves with pot joint. So, I'll be taking both joints to my machine shop and will turn the fat one down to match the correct one.

Returning the defective joint is not an option due to distance.

I'll let you know how things turn out.

[Aridgerunner]

The difference in the outer diameter of the shaft of the two pot joints was only .0015". The larger shaft was ever so slightly tapered from the lead in to the base at pot. That difference was remove ever so carefully in a lathe and now either pot fits either side.

That was fun! Not.