Air in u joint??

[MacG]

Hello this is a follow up on a previous post regarding some nightmarish u joints, well I folded and decided to purchase a new drive shaft, just got it in, no install instructions so not sure if I missed something, there was tape holding down the u joint caps towards the rear diff when I got it which appears normal, however I took the tape off and the caps push back off slightly when I try to seat them, kind of feels like there is some sort of pressure holding them from going all the way down, tried to do some research before I posted it but no luck, thank you fellers, took some photos of how they seat naturally, and when I press down as tight as i can

 

[strutaeng]

That's probably from the grease inside the caps and the needle bearings. I would say that's normal.

The caps are not airtight, so it cannot be from air.


Take off a cap for inspection and you'll know what I mean. Just make sure you don't lose any needles. They shouldn't fall off if there's enough grease in there anyway.

 

[petethepug]

When loaded with grease and all the needle bearings fit to spec it might be as simple as the cap holding a little air pressure.

Taking the cap off is opening Pandora’s box.

 

[Fless]

You might be able to let a little air out by carefully using a pick to slip under the cap seal, without damaging the seal. Kind of like you'd do for a disc brake piston seal.

 

[MacG]

That's probably from the grease inside the caps and the needle bearings. I would say that's normal.

The caps are not airtight, so it cannot be from air.


Take off a cap for inspection and you'll know what I mean. Just make sure you don't lose any needles. They shouldn't fall off if there's enough grease in there anyway.

I got the drive shaft in with no problems, however, I still have the this throttle vibration between 30-40 mph I don’t even know what to look for at this point

 

[MacG]

You might be able to let a little air out by carefully using a pick to slip under the cap seal, without damaging the seal. Kind of like you'd do for a disc brake piston seal.

I thankfully got the drive shaft on with no problems but i unfortunately still have the accelerator vibration as it did previously, I’ve gots warranty on this vehicle and dropping it off on Thursday we shall see what happens