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Old 06-09-2021, 11:37 AM #16
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Turns out ECGS was able to have a turnaround time of 2 days rather than 2 weeks. They shipped it yesterday and I receive it tomorrow. Today is Wednesday...I only ordered the part on Monday.

I'm just going to do the swap. Chances are I'll know more about the state of my current 3rd when I remove it. The $700.00 or so pricetag wasn't horrible...it isn't going to hurt anything...etc etc.

I am thinking of going ahead and doing the two rear wheel/axle bearings as well.

I ordered two quarts of gear oil yesterday...I'll probably order two more today (using coupons at Advance...I got two quarts for less than the cost of one).

Will someone help me piece together a list of parts, probably preferably purchased from NAPA if possible, for the repair? If I take the old 3rd off and nothing axle related looks damaged, do I only need the gasket?

If I decide to replace the bearings, what will I need to purchase? I don't have a press but have seen that NAPA will do this as a service. I just figure if I'm spending the time I may as well replace bearings as well.
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Old 06-09-2021, 12:26 PM #17
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After initial hesitancy regarding doing the rear bearings myself, I think I actually realized that you can simply purchase an entire rear bearing assembly that eliminates all needs for a press. Is this correct?
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Old 06-09-2021, 12:29 PM #18
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Basically this:

More Information for TIMKEN HA594246
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Old 06-09-2021, 07:00 PM #19
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Quote:
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After initial hesitancy regarding doing the rear bearings myself, I think I actually realized that you can simply purchase an entire rear bearing assembly that eliminates all needs for a press. Is this correct?
No,this is not correct. Please search rear wheel bearing replacement.
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Old 06-11-2021, 01:15 PM #20
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I have decided to only swap the 3rd this weekend to see where that gets me. Can someone help me determine which seals/gaskets I'll need on hand?
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Old 06-11-2021, 03:10 PM #21
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I guess what I'm really asking is...will I need to replace any axle gasket/seal on each side after pulling the axles out a bit and then back in?
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Old 06-11-2021, 04:25 PM #22
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I guess what I'm really asking is...will I need to replace any axle gasket/seal on each side after pulling the axles out a bit and then back in?

As long as they’re not leaking, you should be fine to just put it back together.


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Old 06-14-2021, 02:33 PM #23
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Touché to anyone that expressed doubt that it was the rear differential. I dropped in the 3rd Member from ECGS over the weekend and can report that I believe the noise was 100% unchanged. I learned a lot though and am not as disappointed as I thought I would be in this scenario. I did grease the u-joints that I could get to so it wasn't a complete loss. I'll also note that while I doubt the fluid had been changed anytime recent, there weren't excessive shavings or anything.

I do have the following update regarding the swap itself. Anyone with any technical skill at all could typically do that swap. That said...what should have been a three hour job took closer to six. Between my father and myself, I bet we tried 20 times to seat the new 3rd into the housing (and failed each time). At some point we got fed-up and removed the sway bar. I was able to at that point successfully seat the 3rd in on the first try. I think that bar might actually be bent a little, which makes me wonder how it was bent in the first place. It was essentially blocking the 3rd just a small amount towards the top, and I kept trying to sorta "go under the bar with the top of the 3rd's upper flange lip and then seat it" but it kept binding every time.

Regarding the noise, I have three current working theories.
  1. Wheel Bearing (either left or right on rear, probably rear but may be front.)
  2. Wind Noise
  3. ECGS 3rd Makes the Same Noise
    \

So, if it ends up being a wheel bearing, I'm extremely disappointed in that shop I took it to. I stopped by there during lunch and explained the situation. He told me to come back later this week when the owner is there. So I'll be back. I don't expect this to go anywhere but we will see.

I'm wondering if it is a wind noise. A few months ago one of the roof rack covers must have fallen off somewhere because it is no longer there. I'm curious to see if this whole thing has been wind simply singing or causing vibration up top. I have plans to either borrow a cover from a buddy or try my hand at some duck-tape to smooth things out to see if the noise changes at all.

I have no experience with ECGS. It seems most people like them a lot. It it possible that the replacement just makes the same noise as the other one? On that note, I've started rather paying attention to other vehicles I drive and wonder if it isn't to some extent standard noise anyways? There is a Jeep at work with 50,000 miles on it and I'm not entirely sure it sounds much different.

I'm going to keep looking. The next place is to put it on jack-stands in the rear and see if we can determine anything. That honestly should have been one of the first things I did, obviously, but since I had a local shop diagnose it I really assumed they were correct.
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Old 06-14-2021, 02:33 PM #24
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On a side-note to the above, does anyone think it would be worth taking it to the local Toyota dealership?
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Old 06-14-2021, 02:44 PM #25
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Quote:
Originally Posted by LinuxHack3r View Post
Touché to anyone that expressed doubt that it was the rear differential. I dropped in the 3rd Member from ECGS over the weekend and can report that I believe the noise was 100% unchanged. I learned a lot though and am not as disappointed as I thought I would be in this scenario. I did grease the u-joints that I could get to so it wasn't a complete loss. I'll also note that while I doubt the fluid had been changed anytime recent, there weren't excessive shavings or anything.

I do have the following update regarding the swap itself. Anyone with any technical skill at all could typically do that swap. That said...what should have been a three hour job took closer to six. Between my father and myself, I bet we tried 20 times to seat the new 3rd into the housing (and failed each time). At some point we got fed-up and removed the sway bar. I was able to at that point successfully seat the 3rd in on the first try. I think that bar might actually be bent a little, which makes me wonder how it was bent in the first place. It was essentially blocking the 3rd just a small amount towards the top, and I kept trying to sorta "go under the bar with the top of the 3rd's upper flange lip and then seat it" but it kept binding every time.

Regarding the noise, I have three current working theories.
  1. Wheel Bearing (either left or right on rear, probably rear but may be front.)
  2. Wind Noise
  3. ECGS 3rd Makes the Same Noise
    \

So, if it ends up being a wheel bearing, I'm extremely disappointed in that shop I took it to. I stopped by there during lunch and explained the situation. He told me to come back later this week when the owner is there. So I'll be back. I don't expect this to go anywhere but we will see.

I'm wondering if it is a wind noise. A few months ago one of the roof rack covers must have fallen off somewhere because it is no longer there. I'm curious to see if this whole thing has been wind simply singing or causing vibration up top. I have plans to either borrow a cover from a buddy or try my hand at some duck-tape to smooth things out to see if the noise changes at all.

I have no experience with ECGS. It seems most people like them a lot. It it possible that the replacement just makes the same noise as the other one? On that note, I've started rather paying attention to other vehicles I drive and wonder if it isn't to some extent standard noise anyways? There is a Jeep at work with 50,000 miles on it and I'm not entirely sure it sounds much different.

I'm going to keep looking. The next place is to put it on jack-stands in the rear and see if we can determine anything. That honestly should have been one of the first things I did, obviously, but since I had a local shop diagnose it I really assumed they were correct.
Wheel bearings should be easy to eliminate, does the noise change/stop when you're turning?
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Old 06-14-2021, 02:55 PM #26
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I mean you didn't seem to think there was an issue to begin with which leads me to believe any present noise hasn't noticeably changed during your ownership. We don't know how they did their diagnostics... Do you have anything other than highway tread tires on it? Are the tires perhaps cupped at all? Either of those scenarios could produce a wheel bearing like noise which wouldn't change while turning. IMO/IME I wouldn't have jumped to the most expensive repair first without being 100% sure that was the issue. Not blaming you in any way... but if a shop is going to say a diff is bad I am going to want to know what they did to verify it.
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Old 06-14-2021, 03:24 PM #27
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I have a "hum" when driving and appears to be worse when it is cold. I've read countless threads on the same "problem" and 9/10 it was a wheel bearing. Many suspected the rear differential and some even the front (those of us with 4x4). Anyway, the wheel bearings don't have to be loose on our rigs to sound like they are bad. Hope this helps. Good luck.

ps: I still have the noise, Toyota has told me twice now that the wheel bearings are fine.......... so I dunno................
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Old 06-14-2021, 03:40 PM #28
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Quote:
Originally Posted by LinuxHack3r View Post

I'm wondering if it is a wind noise. A few months ago one of the roof rack covers must have fallen off somewhere because it is no longer there. I'm curious to see if this whole thing has been wind simply singing or causing vibration up top. I have plans to either borrow a cover from a buddy or try my hand at some duck-tape to smooth things out to see if the noise changes at all.
This would have been the cheapest fix - why did you start here to eliminate this as a possibility?
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Old 06-14-2021, 04:30 PM #29
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Wheel bearings should be easy to eliminate, does the noise change/stop when you're turning?
No, I don't believe so. At least, at 30-40 mph, if I turn going around a curve it does not seem to change at all really.
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Old 06-14-2021, 04:33 PM #30
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I mean you didn't seem to think there was an issue to begin with which leads me to believe any present noise hasn't noticeably changed during your ownership. We don't know how they did their diagnostics... Do you have anything other than highway tread tires on it? Are the tires perhaps cupped at all? Either of those scenarios could produce a wheel bearing like noise which wouldn't change while turning. IMO/IME I wouldn't have jumped to the most expensive repair first without being 100% sure that was the issue. Not blaming you in any way... but if a shop is going to say a diff is bad I am going to want to know what they did to verify it.
I had a set of very worn (overworn, really) Michelin Latitude tires. I knew of a noise, but figured it was brake or tire related. I knew I had plans to fix both of those issues so never worried too much about it. I did the brakes (calipers, pads, rotors) and then immediately took it for Michelin Defenders. It was at that tireshop they mentioned to me that they thought I had a bearing going out based solely on drive noise. That's what lead me to the mechanic shop.

I know I could have and should have spent a little more time diagnosing the issue myself, but as stated previously I've had good experiences in the past and had little reason to not trust this shop for this diagnosis.
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