Friends,

I wasunder my Disco, greasing my front driveshaft and slip yoke this afternoon for the first time since thedriveshaft rebuild and all went really well. I also used synthetic grease like you guys suggested.

But.....Since I was under there with the grease gun and all, I decided to give the same treatment to the rear driveshaft. As I was greasing it, grease was only coming out1 of the 4 cross ends. So I decided to keep giving it, but I was really just wasting grease, since nothing was happening at the other ends. What gives ??? I thought it could be the zerk fitting, but ifit was I guess that grease would just not go in at all.

What do I make of this ???. This u-joint is not like the spicer joint I had put in the front with the grease fittings on the end of 1 of the cross. Its the type that has the fittingin the corner of theV or whatever its called.

Wadayatink???

 

Good question, I don't know for sure.It happens to me pretty often, I never really questioned it though. I'll bet that all of the bearings are getting grease, but it only comes out a few of the seals that have the least resistance. If you really wanted, I bet you could jam more grease into it quicker andit would probably come out all four seals. Shouldn't make a difference though, seems like the joint has to fill with grease before it comes out, at least that's my take. I suppose there could be blockage in there...

 

That's exactly what i'm worried about...blockage!! But I do hope you're right about the grease coming out of only one end because its seal is weaker or something. But I don't think so. The more I think about it the more I expect the others to chime in with bad news. We'll see I guess.

 

normal, when grease starts coming out stop pumping.

 

Its normal if you move the drive shaft it will put the pressureon a different end and grease will come out there.

Roll the truck foward and change the angle of the zerk,,or after a few days regrease the u-joint and most times it will change and you will get grease in more than one end cap.

 

First and fore most, never put soooo much grease in that it is coming out the cups seals, you basicly just killed their long term life expectancey.
Clean the zerk, pump just a small amount till you feel the first sign of pressure and stop.

 

10-4 !!! thanks for your inputs.

 

Hi,

Can I ask , have most of you guys replaced the "hookes joint" (double uni) with greasable Spiders?? on the front propshaft ?

 

Sure did. The original driveshaft didn't have any issues when it was pulled, but I wasn't taking any chances.

 

If you are referring to the centering ball kit, yes replace it just to cover your tracks.