axle / wheel noise - and leak - 02 WS6
#1
axle / wheel noise - and leak - 02 WS6
update again: axles are pitted and worn, decided to get a new 9" rear. still hearing noises from carrier, will update what I find.
new video:
hey guys, trying to diagnose a loud noise coming from the rear. It is happening on BOTH passenger and driver sides. It seems to start around 35 MPH and getting louder. Here are some videos:
https://youtube.com/shorts/CLH66v6H9ss?feature=share
https://youtube.com/shorts/X1O4F4O7zq8?feature=share
Also, there is some gear oil leak, on the passenger side.
it seems there is some play in the wheels, when wiggling the tires. There is also a constant noise with the wheels spinning. It appears to be on BOTH sides. I am not sure if this is a differential issue or more of the axles/wheel bearings. I put a stethoscope on the pumpkin, I did not hear any weird grinding noises or anything really loud. I checked the front pinion area/u joint, I did not see any slop or play. Car only has 60k miles. What are your thoughts ??
new video:
hey guys, trying to diagnose a loud noise coming from the rear. It is happening on BOTH passenger and driver sides. It seems to start around 35 MPH and getting louder. Here are some videos:
https://youtube.com/shorts/CLH66v6H9ss?feature=share
https://youtube.com/shorts/X1O4F4O7zq8?feature=share
Also, there is some gear oil leak, on the passenger side.
it seems there is some play in the wheels, when wiggling the tires. There is also a constant noise with the wheels spinning. It appears to be on BOTH sides. I am not sure if this is a differential issue or more of the axles/wheel bearings. I put a stethoscope on the pumpkin, I did not hear any weird grinding noises or anything really loud. I checked the front pinion area/u joint, I did not see any slop or play. Car only has 60k miles. What are your thoughts ??
Last edited by slothman; 06-21-2023 at 10:15 PM.
#2
I'd pull the cover and look for shavings stuck to the round magnet. Some very fine shavings is normal wear, but a large accumulation could mean bearing or gear wear. Has the car been maintained properly including rear lube changes? A4 or M6? The backlash at the wheel doesn't seem too abnormal. With the axle fully suspended, can you spin one wheel (trans in park or gear)? If it takes less then ~100 ft-lb to turn the wheel, the diff may be toast.
If the diff checks out, you may need to pull the axles and inspect the wheel bearings.
The wetness on the pass tube could be from the vent tube (I can't remember which side its on). If it isn't dripping, then I wouldn't be too worried about that.
If the diff checks out, you may need to pull the axles and inspect the wheel bearings.
The wetness on the pass tube could be from the vent tube (I can't remember which side its on). If it isn't dripping, then I wouldn't be too worried about that.
#3
I'd pull the cover and look for shavings stuck to the round magnet. Some very fine shavings is normal wear, but a large accumulation could mean bearing or gear wear. Has the car been maintained properly including rear lube changes? A4 or M6? The backlash at the wheel doesn't seem too abnormal. With the axle fully suspended, can you spin one wheel (trans in park or gear)? If it takes less then ~100 ft-lb to turn the wheel, the diff may be toast.
If the diff checks out, you may need to pull the axles and inspect the wheel bearings.
The wetness on the pass tube could be from the vent tube (I can't remember which side its on). If it isn't dripping, then I wouldn't be too worried about that.
If the diff checks out, you may need to pull the axles and inspect the wheel bearings.
The wetness on the pass tube could be from the vent tube (I can't remember which side its on). If it isn't dripping, then I wouldn't be too worried about that.
#4
I just got this car. I do know about 7k miles ago they changed the gear lube. They probably heard some noises. To me the driveshaft looks damn near new and or replaced. Car is a M6. Stock motor. I suppose I need to pull the cover, as you suggest, and inspect. Am I looking for broken teeth etc ?
The following users liked this post:
slothman (06-12-2023)
#5
Can't rule out anything at this point. If you did break off a gear tooth (like I did, check the link in my sig), it will be immediately obvious when you pull the cover. However, when the gear breaks off a tooth, you'll notice a big increase in noise that happens immediately. If the noise has grown gradually over time, look for worn bearings. If the rear has had proper maintenance, 60Kmi is likely much too early for bearing issues, If its been neglected, then anything could be bad.
#7
With the axle fully suspended, can you spin one wheel (trans in park or gear)? If it takes less then ~100 ft-lb to turn the wheel, the diff may be toast.
The wetness on the pass tube could be from the vent tube (I can't remember which side its on). If it isn't dripping, then I wouldn't be too worried about that.
The wetness on the pass tube could be from the vent tube (I can't remember which side its on). If it isn't dripping, then I wouldn't be too worried about that.
The vent tube IS on the passenger side.
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#8
#9
No. The noise occurs once per carrier revolution, I watched the video a few times to determine where/when the 'noise' occurs. If the noise were in the pinion, it would/should occur 3 1/2 times per carrier revolution since you have 3.42 gears. So it's coming from within the carrier. Torsens are an unusual posi, a design we're not familiar with to diagnose noises. But since you have an M6 which are very abusive towards our little 10 bolts, it wouldn't surprise me if there was something broken within it. Torsen stopped supplying that posi years ago and replacements are not available. they replaced it with a 'heavy duty' design.
#10
No. The noise occurs once per carrier revolution, I watched the video a few times to determine where/when the 'noise' occurs. If the noise were in the pinion, it would/should occur 3 1/2 times per carrier revolution since you have 3.42 gears. So it's coming from within the carrier. Torsens are an unusual posi, a design we're not familiar with to diagnose noises. But since you have an M6 which are very abusive towards our little 10 bolts, it wouldn't surprise me if there was something broken within it. Torsen stopped supplying that posi years ago and replacements are not available. they replaced it with a 'heavy duty' design.
I am trying to determine if it's worth it at this point to pull the axles and the third member. Or say F it and pull the whole assembly.
#11
The clack-click-clack sound is not of a carrier bearing, a carrier bearing going/gone would 'growl' and not always in 'time' with carrier revolution.
My driver side carrier bearing back in 2004.
My driver side carrier bearing back in 2004.
#12
well for about $550 I can go eaton posi and 3.90/4.10s....I plan on keeping it pretty stock with street tires ....do you think that would be ok ?
second option is buy a used complete axle....dont really like that idea because well....it's used
third option get the 9 inch for $2500 but I know for sure that **** is gonna take 6 months to get all the parts
I'm not tracking this car I'm taking it to shows and coffee lol
#14
It sounds like something is rolling around on the inside of the differential to me. It appears that the driver-side wheel is not rotating due to that side's side gear not spinning (and your friend is spinning the passenger side wheel). No obvious evidence on the magnet. Not sure you can rule out side bearings yet. Pull the diff out and check them (careful to keep the shim stacks separate).
#15
It sounds like something is rolling around on the inside of the differential to me. It appears that the driver-side wheel is not rotating due to that side's side gear not spinning (and your friend is spinning the passenger side wheel). No obvious evidence on the magnet. Not sure you can rule out side bearings yet. Pull the diff out and check them (careful to keep the shim stacks separate).
#16
#17
Axle bearing surfaces are not damaged.
When the axle was assembled at the factory with the carrier, bearings and shims, the use a 'case spreader' to force open the case for insertion of the parts. So when the parts are in, the 'squeezing' puts proper preload on the bearings. Yes it's difficult to remove, and difficult to re-install with the proper preload. I made my own case spreader.
When the axle was assembled at the factory with the carrier, bearings and shims, the use a 'case spreader' to force open the case for insertion of the parts. So when the parts are in, the 'squeezing' puts proper preload on the bearings. Yes it's difficult to remove, and difficult to re-install with the proper preload. I made my own case spreader.
#18
Axle bearing surfaces are not damaged.
When the axle was assembled at the factory with the carrier, bearings and shims, the use a 'case spreader' to force open the case for insertion of the parts. So when the parts are in, the 'squeezing' puts proper preload on the bearings. Yes it's difficult to remove, and difficult to re-install with the proper preload. I made my own case spreader.
When the axle was assembled at the factory with the carrier, bearings and shims, the use a 'case spreader' to force open the case for insertion of the parts. So when the parts are in, the 'squeezing' puts proper preload on the bearings. Yes it's difficult to remove, and difficult to re-install with the proper preload. I made my own case spreader.
The following users liked this post:
slothman (06-18-2023)
#20
The potential problem you're gonna have would be replacement axles because you have traction control. They all come from 'offshore' now.
Here's a recent thread about that.
https://ls1tech.com/forums/gears-axl...loose-hub.html
Here's a recent thread about that.
https://ls1tech.com/forums/gears-axl...loose-hub.html