Greaseless u-joints leaking?
Thread Starter
Racer
Joined: Mar 2005
Posts: 288
Likes: 1
From: Maple Ridge British Columbia
Greaseless u-joints leaking?
I rebuilt my front and rear suspension over the winter and replaced all the u-joints with Moog heavy duty greaseless u-joints. Now that I've driven the car for a while, I pit it up on the lift for a visual inspection and to check all the nuts and bolts for correct torque.
I noticed that three of the greaseless u-joints have actually leaked some grease. Is this normal or should I be concerned. BTW, no noise or vibration and no play in the joints. I'm worried that the leakage will cause premature wear of the u-joint?
I noticed that three of the greaseless u-joints have actually leaked some grease. Is this normal or should I be concerned. BTW, no noise or vibration and no play in the joints. I'm worried that the leakage will cause premature wear of the u-joint?
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
The joints without a grease fitting are not really "greaseless". The needle bearings are liberally coated with grease and some excess placed in the cap when they are manufactured/assembled. As mentioned, operation and engine heating will cause what grease is in there to expand; and some can ooze out from the cup seal(s). But, once that is expelled, you shouldn't get any more grease to come out...unless the joint is defective in some manner.
I'm surprised that the joints without grease fittings don't get greased with hi-temp synthetic grease these days. Synthetic wouldn't 'melt' under minor heating. But, it might cost an extra $.01 per joint....
I'm surprised that the joints without grease fittings don't get greased with hi-temp synthetic grease these days. Synthetic wouldn't 'melt' under minor heating. But, it might cost an extra $.01 per joint....
