OFFICIAL 2nd gen 4x4 front differential bearing vibration thread

I just got through reading about it. It has been removed because people were keeping it too long and people wanting to jump line, and the person who started it got fed up and stopped it. unless someone else has started something.

 

As expected... thanks for the info.

 

They are pretty easy to make if you have access to a drill press and can use a tap. It's just a matter of getting the correct length & thickness. I picked up the materials to make one today and I will, if the slide hammer puller doesn't work. Someone a few posts back was willing to take measurements on the tool he had.

 

Nothing has changed in the 2016 4x4 models. Grinding/groaning from the needle bearings occurs (especially if the truck is lifted) until they are replaced by a bushing. A TSB has not been issued covering the 2016s and I don't know if I would have wanted it anyway. Toyota would have just replaced the shitty bearings with more shitty bearings.

See my post on the 2016 forum addressing this same issue:
https://www.tacomaworld.com/threads...a-vibration-noise.407327/page-9#post-12268506

Just replaced my bearings today; No more rubbing! Thanks ECGS for the fix and the team at Overbey (transmission and differential pros) in La Habra, CA.

 

That bearing should be dipped in gold and put on display in every Toyota dealership, what a work of art. Just think if there were no ECGS.

 

Messaged

 

Alright fellas, gonna order ecgs bushing because of the slack in mine, just wondering tho, what are the concerns or problems arising out of driving without changing it for so long other than the wear on the half shaft?

 

Trash in your diff oil if it gets bad enough.

 

Yea, I suppose that wouldn't be to good to let go.

 

So I got my bushing yesterday and of course there is a groove through it for oil, but did anyone else get one with a sort of deformity in it and if so should it be of a concern or just install it and run it?? Just wondering as it is going to be installed Monday. Pic attached below. Also the oil groove, would it be best to have it at very bottom when installing or does not matter?



From what I have seen and read is it to be the consensus that all bushings installed so far have been 100% no issues? How many have removed their cv shafts after some miles and inspected for any signs of wear. I did see at least 1 person did and said no wear seen at all. Just a few questions for me to know and maybe a few others who may be wondering. Thanks

 

Don't know for a fact, but I thought I read somewhere that they were going to start putting a oil journal or (groove) in them. You may want to email them that pic and make sure it's ok to install, hard to tell without touching it, but it does look a bit rough.

 

I wondered if there was a "best" position for the oil groove, but ended up just installing it. The half shaft is going to be spinning distributing the gear oil, so I don't think it'll matter a whole lot. I suppose the 6 o'clock position would make the most sense.

As for that deformity, I'd ask ECGS, but personally wouldn't install that bushing in my truck. My bushing was perfectly smooth on the inside, minus the oil groove.

 

You can see the oil groove in that picture...just to the right of the deformity.

 

I installed my groove at 12 o'clock. Since the weight of the shaft is mostly on the bottom, I figured the smoothest surface should be there. Don't know if that's right or wrong tho.

 

The risk is bearing failure and lots of little metal pieces fucking up your diff. I drove on mine for about 8,000 miles and the shaft and bearing looked fine.

 

When you engage 4 wheel drive the bushing spins at the exact same rpm as the axle. That is why the noise goes away on the bad ones once you engage 4wd.

The groove position when installing bushing is irreverent.

 

The bushing is always spinning regardless of 4wd or not.

The reason why the vibes go away when in 4 hi is now the cv is not spinning the drive cup, the drive cup is spinning the cv / they are now being spun at the same rate, changing the side load in the bearing making it to where it doesnt oscillate int he bearing.

 

First off, the "bushing" never spins, however the "needle bearings" inside the bearing race do.

 

^ well yeah, thats what i meant.... lol

 

Well the bushing spins when the front driveshaft spins. Don't believe me then try it by spinning the drive shaft by hand the next time you have the axle out and watch it.

The bushing OD is press fit into the dif carrier.