Front Differential needle roller bearing replacement

LTDSC

LTDSC

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Front differential needle roller bearing replacement

Has anyone replaced their differential needle bearing yet? I see a lot on the tacoma forums but not much for the 4runners. I know they're the same diffs and whatnot but im really looking for a good write up. I know i cannot utilize the ECGS bearing replacement because its not applicable for the AWD models.

I know the part # is 90364-35010, oil seal # is 90311-47012. I really dont want to take my 4runner to the dealer for this change as i'd expect it to be highly labor intensive thus being overly expensive. I know i can do the job after watching the ECGS video on how to. Im just looking for any tips/tricks and if anyone else has done this.
 
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I have installed the ECGS bushing in two Toyotas so far. Getting the old bearing out is easy as you know from watching the video. Having done it a few times, I'm not sure how easy it would be to pound a new roller bearing back in place. Mine were torn up pretty bad on the way out and I don't think I could use the ECGS process to replace the old bearing with a new one. They aren't very robust.

I'll be curious to see what others post here because I've wondered about this too. I'd be happy to loan you my bearing puller if you want to give it a try.
 
Interesting... I just noticed this TSB popped up on TIS recently. Seems like there's a common issue here with these front units at least on the Part-Time 4WD set-up.

View attachment T-SB-0026-15 ('04 - '15 Applicable Toyota Models, 4WD Front Differential Groaning Cyclical Noise.pdf

I see though that you're running a V8 unit though...

Well here's the "write-up" straight from the FSM (Isn't that after all the holiest of write-ups? It even has pictures! Take that ancient story book revered and reviled by all!)
 

Attachments

BlackWorksInc said:
Interesting... I just noticed this TSB popped up on TIS recently. Seems like there's a common issue here with these front units at least on the Part-Time 4WD set-up.



View attachment 180741



I see though that you're running a V8 unit though...



Well here's the "write-up" straight from the FSM (Isn't that after all the holiest of write-ups? It even has pictures! Take that ancient story book revered and reviled by all!)
Click to expand...


I have some friends who are service writers and techs. I'll bring this up to them and see what they can finagle. Thank you for this!
 
Well you don't have the part-time front differential so it's not going to be covered under the TSB. That being said, the combination of the pictures in the TSB and the FSM I linked should be pretty helpful in getting the differential apart and put back together. :)

I'd offer to come to my dealership now that my finger's a bit more healed up, but honestly you might want to save the money if you know some people. :) Where in NorCal are you again?
 
BlackWorksInc said:
Well you don't have the part-time front differential so it's not going to be covered under the TSB. That being said, the combination of the pictures in the TSB and the FSM I linked should be pretty helpful in getting the differential apart and put back together. :)

I'd offer to come to my dealership now that my finger's a bit more healed up, but honestly you might want to save the money if you know some people. :) Where in NorCal are you again?
Click to expand...


I'm in Vacaville. Im expecting this to be stupid expensive with having to take the diff apart.
 
The TSB has a mini walkthrough in it that doesn't differ in any significant way from the ECGS writeup. That would lead me to believe that you wouldn't have to take the differential apart to do it. According to the TSB, you can tap it in from the driver side tube while it's still attached to the vehicle if you can find the right tool to tap it in place without damaging it.

It does look like they completely removed the spindle, strut, and LCA in the photos on the TSB. That's not completely necessary but the additional clearance would be helpful.

The TSB kind of made me laugh a little. It's the ECGS writeup almost to the tee and they act like it's a newly discovered problem and procedure. This has been a problem on Tacomas for a long while and in Tacoma circles they have done a lot of research to find out what was making the sound. Apparently Toyota's long-standing solution was to replace the entire differential and it was narrowed down to the needle bearing by Tacoma forum members and ECGS.
 
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Sadly it's different because I'm AWD. Not part time 4wd. But I'll let the techs decide how they tackle it. I personally don't know the difference in the differential between the two.
 
This ended up being a bad brand new CV axle from NAPA. It was binding on any sort of a load. I have a video ill throw on youtube and post here. Swapped to another new CV axle and it works fine. Crisis averted.
 
looks like you are right about this part number. I have a lot of play in there too, driver side. there's no leak yet though. i'm afraid it would fail on me at the worst possible time. i'll be replacing it soon. what's the status in your repair? did the part number work?


LTDSC said:
Has anyone replaced their differential needle bearing yet? I see a lot on the tacoma forums but not much for the 4runners. I know they're the same diffs and whatnot but im really looking for a good write up. I know i cannot utilize the ECGS bearing replacement because its not applicable for the AWD models.

I know the part # is 90364-35010, oil seal # is 90311-47012. I really dont want to take my 4runner to the dealer for this change as i'd expect it to be highly labor intensive thus being overly expensive. I know i can do the job after watching the ECGS video on how to. Im just looking for any tips/tricks and if anyone else has done this.
Click to expand...
 
radlynx said:
looks like you are right about this part number. I have a lot of play in there too, driver side. there's no leak yet though. i'm afraid it would fail on me at the worst possible time. i'll be replacing it soon. what's the status in your repair? did the part number work?
Click to expand...


My issue was a crap CV axle that was binding.
 
BlackWorksInc said:
Interesting... I just noticed this TSB popped up on TIS recently. Seems like there's a common issue here with these front units at least on the Part-Time 4WD set-up.

View attachment 180741

I see though that you're running a V8 unit though...

Well here's the "write-up" straight from the FSM (Isn't that after all the holiest of write-ups? It even has pictures! Take that ancient story book revered and reviled by all!)
Click to expand...

I had this going on when I had an 05 Tacoma. Found it interesting that there is a TSB out for it now.
I lifted my tacoma 3" as soon as I bought it, finally wiped out the CV boots about 70k, and put EMPI axles in. I had heard they were well known and durable in the FWD sports car world. I started getting the bearing noise after I put the new axles in, and never noticed it with the oem axles. I thought it might be some tolerances on the shaft were off by a 1000th of an inch or something weird. Never got around to replacing the bearing before it got totaled in a accident.
 
Last edited:
I have an 07 4Runner part time 4wd. V6.

Just replaced all suspension with toytec, did UCA, and while I was at it did both cv shafts even though only one of them was puking bad enough to need fixing. So with the shafts I did new seals.

I noticed last night doing a test drive that it's perfectly fine in 4wd. But as soon I go to 2wd, I can barely hear and feel that womp womp grinding/bearing noise up front. I'm guessing it's the bearing you all are discussing.

Do I try and take this TSB to Toyota and see what they say? Or buy the ecgs bushing kit and see if that solves the problem. This is my DD so it's starting to get frustrating. And my wallet is shrinking fast. I fix one thing and two more things present themselves.


Sent from my iPhone using Tapatalk
 
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