Thread: APT heavy duty drive shaft

my shaft is not breaking but the DC joint is about to eat itself, I never greased centre bearing, don't even know whether I have one to be honest, never visually noticed it. when I spoke to TW he said the service and greasing is very important to get a good live out of DS

All DC's have a centre bearing, but it is burried into the middle of it and you cant really see it. Its purpose is to maintain an equal angle balance between the 2 uni joints that make up the DC otherwise it would be flopping around everywhere.

This is the bearing here - it has a white cap in the middle of it to keep the rollers in position and the other side of the DC joint has a pin that goes in to the middle of it.




Tom calls it a CV Socket Flange and the other end of it is the CV Weld Yolk. The yanks call a DC a CV.

ImageUploadedByTapatalk1416042700.360132.jpg

Originally Posted by Slunnie

Is there a special tool to service the centre bearing? I've never done it because I never was able to and too lazy to improvise. Might see if TW can send me one before it does break.

Yes, it's just a tapered plastic nozzle - service tool Plews-Lubrimatic #05-019. There is a small hole in the centre bearing and you press the nozzle into it and pump the grease in. It is inaccessible when the shaft is fitted, could get to it from the top maybe with some difficulty. Generally the shaft needs to be removed to access.

Have a read of:

http://www.4xshaft.com/maintenance.asp

I think with a long flexible hose and a second person actually holding and operating the grease gun I might be able to grease it in place by coming in at the top.

I have a TW and every service(10,000) I remove it. As for pumping grease until it comes out all four caps, in my experience grease only ends up coming out of one, the one with the seal that has the least resistance.

Once that seal starts expelling grease, there is less pressure on the other three and then grease just keeps coming out of the first one.

Originally Posted by Steve223

yes agree went with a GBR a Utah, Bill seems to know what he is doing and the components seems to better quality then TW still $500 cheaper then ATP

mate what did it cost for delivery to Oz?

Originally Posted by ozscott

mate what did it cost for delivery to Oz?

still waiting for invoice should be just shy of $600 US