Grinding metal

[Bolthead]

Yesterday when I engaged 4wheel drive system on my 97 crew, I heard nothing but grinding metal. My first thought, 4wheel drive is going! Turns out two of the sealed U joints are shot on the 4wheel drive. I'm not sure about others, but I have never cared for the sealed Ujoints with no zirk fittings. Curious what input anyone else has or has experienced with these sealed type Ujoints.

 

[95_stroker]

Are you talking about the output shaft from the transfer case to the frt diff? I replaced both of those joints with greasable ones.

 

[Elk]

Two schools of thought:

1. Grease is good.
2. Sealed are stronger since they are solid, no channel for the grease to run through.

For normal use, I would go with the geasable.

 

[Bolthead]

Yes talking about the the output shaft from the transfer case to the frt diff. I thought the greased type were better, as I've had better luck with them. I suspect I'll replaced the others given the mileage 130,000. Thanks