Greaseable u-joints are a MESS!!!

[GHarman]

Exactly! Who cares how strong the joint is when it fails under normal driving conditions due to lack of lube, as my OEM joints did. Also the strongest joints ARE greasable. Click here!

NOW THATS A U-JOINT!!!!!! GregH

 

[CRuth]

Want to come over and clean my truck up? Might want to bring a chisel.

 

[MA2LA]

Exactly! Who cares how strong the joint is when it fails under normal driving conditions due to lack of lube, as my OEM joints did. Also the strongest joints ARE greasable. Click here!

They are great u joint for rock crawlers and such but they are not meant for drive shafts or front axles that do not have locking hubs. They don't have needle bearings, they use a sleeve instead and can not hold uo to the constant use.

 

[JVantreese]

If your greaseable ujoint is throwing enough grease to notice, then you have ujoints that need to be replaced becouse the are worn to the point that they are not retaining the grease in the cups. If the seal is still good then you must be pushing too much grease through then when you service them. Healthy ujoints will not undercoat your truck.

 

[steved]

If your greaseable ujoint is throwing enough grease to notice, then you have ujoints that need to be replaced becouse the are worn to the point that they are not retaining the grease in the cups. If the seal is still good then you must be pushing too much grease through then when you service them. Healthy ujoints will not undercoat your truck.

At one time, the rule of thumb was to expel the old grease during the regreasing process.



I do not buy that if you have grease coming out, the joint is bad.



I have several million miles on greaseable joints, all threw grease after they were serviced... not a single one ever gave trouble from being "overgreased".

 

[JVantreese]

At one time, the rule of thumb was to expel the old grease during the regreasing process.



I do not buy that if you have grease coming out, the joint is bad.



I have several million miles on greaseable joints, all threw grease after they were serviced... not a single one ever gave trouble from being "overgreased".

Howdy Steved,



Any of us gray beards have put many miles on greaseable ujoints becouse once upon a time all ujoints were equiped with a zert fitting. I use to pump grease until it came out of the cups but I then wiped most of it off with a shop rag. What little was left on the joint would not make much of a mess on the car/truck. Now if a joint was bad it would often heat up some allowing the grease to leave its home in the cup and leave you with some dry needle bearings. If I was dumping alot of grease out of my ujoints I would consider pulling the joints and inspecting/replacing them. Now you could also check the temp of the ujoints after a long trip with one of those new fangled thermometers to see if you have any joint that is running hotter then others. Just my 2 cents.

 

[Gary - K7GLD]

Howdy Steved,



Any of us gray beards have put many miles on greaseable ujoints becouse once upon a time all ujoints were equiped with a zert fitting. I use to pump grease until it came out of the cups but I then wiped most of it off with a shop rag. What little was left on the joint would not make much of a mess on the car/truck. Now if a joint was bad it would often heat up some allowing the grease to leave its home in the cup and leave you with some dry needle bearings. If I was dumping alot of grease out of my ujoints I would consider pulling the joints and inspecting/replacing them. Now you could also check the temp of the ujoints after a long trip with one of those new fangled thermometers to see if you have any joint that is running hotter then others. Just my 2 cents.

YUP - that's the way I always found it as well - pump grease slowly and carefully to not blow seals, until new grease is seen, then wipe excess off - any that then slings off is usually quite trivial. Sure wish we still had grease-able suspensions and shafts - this "greased permanantly at the factory by trained Chimps" really sucks, especially upper and lower ball-joints, I have long since been using a piercing needle on my grease gun, and the only thing I can't grease, is the U-joints...



Haven't had any suspension or driveline failures yet...

 

[JFaulkner]

They are great u joint for rock crawlers and such but they are not meant for drive shafts or front axles that do not have locking hubs. They don't have needle bearings, they use a sleeve instead and can not hold uo to the constant use.

I've heard that before but I just wanted to point out that being greasable does not automatically mean weak.



Also as far as standard greasable joints are concerned, just because there is a hole drilled through a part doesn't mean it's weaker than a solid piece. For example the strongest axle shafts you can get from SCS Gearbox for a rockwell truck axle (Mod pulling truck) are gun drilled. Meaning that they have a hole drilled all the way down the center and weigh a fraction of what solid shafts weigh. Bottom pic. remember solid doesn't automatically = strong