Leaking CVs After Lift

[mason10198]

After installing MarkMC's 3in suspension lift, the front CV shafts stressed out and started leaking on both sides. On the drivers side, Diff fluid was everywhere, and on the passenger side there was grease slinging all over everything. I also found that my 4WD disconnect needed to be rebuilt. This is how I fixed everything.

[Opeth]

Add a hose clamp to your inner cv shaft tripod joint, or the new cvs you bought will just do the same thing.

[mason10198]

Add a hose clamp to your inner cv shaft tripod joint, or the new cvs you bought will just do the same thing.

where exactly on the shaft are you saying that hose clamp should go?

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[v7guy]

Everywhere. Eventually the new boots will pop off, if you put in heavier springs the boots will split if they aren't neoprene, they may hold up without the heavier springs in there, they might not, it varies.

A quick little search should toss up a plethora of info.

[KingBird]

I don't think he understood that the added stress to your half shafts destroyed your seals on the diff and disconnect. I think he was of the understanding that the boots were leaking.

[v7guy]

Kingbird, Mason specifically mentioned the slipped/split CV boot with pictures... from the pictures it looks like it slipped off the tripot side of CV axle, which is very common. That was in addition to the destroyed bearings and seals.

The destruction of diff/disconnect seals and bearings is also very common and is extremely well documented here. As Mason apparently discovered with a quick search. The quick destruction seems to be related to additional stress on an already well worn component. After replaced they last reasonably well.

All the problems mentioned are common and easily solved as long as you read a lil bit. We've documented the vast majority of lift related issues and the solutions here. As also documented, the good ole AWD sleeve helps distribute the stress on the bearings.

[KingBird]

OK, I went and checked out every single thread he's ever written here, I must have missed the one with the split boots... Got a link?

[v7guy]

It's in his build thread that he posted a link to in the original post, it looks like it's probably split at about the 10 o'clock position, with all the CV grease on the subframe it's pretty obviously split or slipped off.

I wasn't trying to be a dick in the previous post if it was taken that way. Just wanna make sure you guys are aware.

[KingBird]

Yeah, that's a shadow. The reason why the grease is all over everything is because the seal on the disconnect failed. The grease is from the disconnect.

When you call people by name and attempt to correct them you're gonna get corrected if you're wrong...

[Chris68chevy]

Yeah, that's a shadow. The reason why the grease is all over everything is because the seal on the disconnect failed. The grease is from the disconnect.

When you call people by name and attempt to correct them you're gonna get corrected if you're wrong...

V7guy knows what he's talking about. If you zoom in on the picture the grease that has been slung out is clearly from the inner part of the CV axle. I've had my disconnect fail, the grease doesn't look like that if it's never been replaced. He wasn't trying to be rude, just trying to help out others.

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[KingBird]

Neither was I. I guess I got a different meaning from the way it was originally written, photographed, and fixed. What you're saying makes more sense though. The grease in my "disconnect" had hardened to the point that it couldn't leak.

[Moots1288]

I've never seen the grease leak out from a disconnect..

[Opeth]

The grease that was flung is most definitely from the cv shaft. The lube in the disconnect is yellowish/white in color if it hasn't burned up yet from the factory and turned black/gray.