Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: gordy on July 28, 2008, 03:51:58 PM

Title: Axle UJ ? (my Jeep is really begining to piss me off) lol
Post by: gordy on July 28, 2008, 03:51:58 PM: OK so I've taken this damn Jeep apart too much this last week or two. And its too soddin hot for wrenchin. New wheel bearing, new diff bearings, old ones were rusty?, new rotors and pads.....then the calipers seized, new calipers, but I still got this anoying frigging noise out front, like whine/howl between 30-45 but all but disappears 45+. I happens on coasting too. I also get a slight knock when I pull away. Front prop has no play as far as I can tell. The near side axle UJ has some play, like 1/2mm when I get a pry bar in there. Offside tight w/no play.

You think this loose UJ could be the culprit?

Incidentally the diff bearings and both front axle UJ's were replaced by a so called Jeep specialist 10,000 miles ago. Shoud they last more than 10K?
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Post by: GermanXJ on July 28, 2008, 04:22:23 PM: I dont think the UJ is the problem. Sorry mate I think its more sinister than that. If I lived in the UK I would lend ya a hand.
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Post by: Asylum on July 28, 2008, 04:23:42 PM: Have you checked the double carden joint on the front prop mate?

Mine was making a squeek/chirp noise a while ago. Tracked it down to that. rebuilt it with a kit from lighthouse. The noise was related to motion/ speed/tone.

10,000miles is a lot of miles especialy after youve been wheeling at kirton. That place kills joints and bearings. I have only done 6,000 miles in my froading TJ since I bought it 3 years ago. And the UJ's that dont allow you to grease dont last long. I found it better value to buy the more expensive spicer ones from lightouse that are greasable and service often.

Clayt
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Post by: gordy on July 28, 2008, 04:35:49 PM: Quote from: "Asylum"
Have you checked the double carden joint on the front prop mate?

Mine was making a squeek/chirp noise a while ago. Tracked it down to that. rebuilt it with a kit from lighthouse. The noise was related to motion/ speed/tone.

10,000miles is a lot of miles especialy after youve been wheeling at kirton. That place kills joints and bearings. I have only done 6,000 miles in my froading TJ since I bought it 3 years ago. And the UJ's that dont allow you to grease dont last long. I found it better value to buy the more expensive spicer ones from lightouse that are greasable and service often.

Clayt

I checked 'em, they don't seem to have any play at all, nor do the dinion bearings. I ordered a UJ from lighthouse today for the axle, I'll get that in and see how it goes.
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Post by: Asylum on July 28, 2008, 04:41:17 PM: Mine didnt have any play either. Once my prop was removed I could hold the prop and rotate the double carden and I could feel the resistance. If done fast enough it would squeek. The UJ's and dont remember the correct name for the centre of the double carden joint, but they were grease once and forget kind as stock. basicaly they were all dried up and shot/worn.

Hope it turns out to be something as simple as this for you mate.
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Post by: Bubba on July 28, 2008, 05:40:55 PM: take off the front prop ant take it for a drive
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Post by: eastryjeep on July 28, 2008, 05:46:17 PM: It's got some wierd name like a "double cardian, constant velocity joint", but you can call the wee bastid whatever you like, it's still not gonna come to you :lol:
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Post by: MOCAJ on July 28, 2008, 05:57:29 PM: my double cardon started squeaking after some froading so i greased it with a neddle attachment for the grease gun.

Lifted the rubber boot and basically filled it, not sure its a permanent fix but its being quiet ever since
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Post by: MOCAJ on July 28, 2008, 05:59:57 PM: Quote from: "eastryjeep"
Put the propshaft in the passenger seat of your daily ride and tool round the local by-pass waiting for it to whisper in your ear 'Oi, mister, I'm fucked, fancy a quickie?' :wink:
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Post by: eastryjeep on July 28, 2008, 06:19:21 PM: Bloody Hell, that's neat!
If I disconnect the rear shaft as well and tow the Jeep around the block would that eliminate engine noise too :!:

AND before anyone tries that, I was being facetious BOTH times, that second suggestion is probably even more dangerous than it sounds, so DON'T do it!
(Steering lock, unboosted brakes, no PAS, etc, etc, it hardly bears thinking about, except as a laugh.)
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Post by: greggmo on July 28, 2008, 10:06:06 PM: yup. drop the front prop and you will know if it is that or not. finding a squeak is always a process of elimination unless somethin falls off.
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Post by: gordy on July 28, 2008, 10:06:15 PM: Quote from: "GermanXJ"
I dont think the UJ is the problem. Sorry mate I think its more sinister than that. If I lived in the UK I would lend ya a hand.

I don't like the word "sinister" lol. Thanks for your offer though.
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Post by: demonicwillow on July 29, 2008, 11:01:00 PM: Dont drop the rear prop either, less you got a SYE fitted
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Post by: gordy on July 30, 2008, 09:11:37 AM: Well the knock was the right side sway bar link, somehow worked loose, I returned the UJ, as no point wasting time, so when I get 5 minutes I'll drop the front prop, need to get a Snap On 8mm flank drive plus wrench, everything else I used is shit and slips on the bolt head.
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Post by: gordy on August 12, 2008, 12:23:47 PM: The other knock was the trackbar link at the axle end, new bolt, sorted. Now onto this noise. Convinced I don't have "angry sparrows". Removed the propshaft, noise still there. Everything pointing at pinion bearing, as the noise is road speed related, not load related, ie happens on coasting too.

Here's what it definatly isnt: wheel bearings (because I replaced 1 and the other is good, carrier bearings because I replaced 'em (via dealership), brakes, calipers, propshaft.

Just to recap, i'm getting a slight vibes, and speed related bearing type noise between 25-50 mph, over 55 almost disappears.

So only leaves pinion bearings, and according to factory service manual diagnosis specifically front pinion bearing (or outer bearing) which correct me if I'm wrong is at the yoke side of the carrier behind the oil seal.