TT Diff noise.

[rovercanus]

I was kinda joking pm. There are 2 thrust washers inside the TT. I suspect that is where the noise is coming from. Mine do make that noise at times and yet function as expected.
If you see the following picture you'll see that the satellite gears don't ride on pins.

 

[p m]

You're right. the idea is basically the same, though - if the edges of the satellite gears come in contact with what they are not supposed to come in contact with, you'll hear the ratcheting noise - but that's bad news.

 

[rmuller]

Jarek -- Try to get the video that Stevie shot of you on that hill climb this past weekend.. you can really hear it good in there.

 

[rovercanus]

You're right. the idea is basically the same, though - if the edges of the satellite gears come in contact with what they are not supposed to come in contact with, you'll hear the ratcheting noise - but that's bad news.

If you've ever had one open you'ld see there's really no place for the gears to go. The diff works by forcing the gears together and therefore "locking" the larger gear that the axle shaft is connected to. It's actually pretty slick how it works.

 

[p m]

I have one sitting on my workbench. It is a clever design, and it should not make any noises when it works. What may be happening when the carrier wears out is the satellite gears shift inside the carrier bores, allowing the teeth edges to catch on the edges of the bores.

 

[rovercanus]

I have one sitting on my workbench. It is a clever design, and it should not make any noises when it works. What may be happening when the carrier wears out is the satellite gears shift inside the carrier bores, allowing the teeth edges to catch on the edges of the bores.

It'll make noise if the thrust washers are slipping past each other, thus setting up the vibrations conducted through the air.
Wanna e-fight?:bigok:

 

[p m]

nah. it's 2 hours past a time for a beer, and I'm still at work.

 

[hugo]

What may be happening when the carrier wears out is the satellite gears shift inside the carrier bores, allowing the teeth edges to catch on the edges of the bores.

Mine are NEW! this was the first time out with them on.

 

[Steve Rupp]

Here's a thought.... Call Tractech

 

[gmookher]

jarek, just curious, did you have the trutrac 'professionally' setup with correct backlash on gears/preload on bearings? if its a new unit/first time out is it under any warranty? who'd you buy it from?

if you think it's the TT have you drained the diff to look at the fluid or performed an operational chk on the TT.

how does one operationally test a TT prior to removal? open diff and locker are easy...

 

[post]

how does one operationally test a TT prior to removal? open diff and locker are easy...

here's a link to the owners manual, the ops chk is on the bottom of the page.
http://www.eatonperformance.com/PDFs/TrutracOwner-1.pdf

 

[nrene]

here's a link to the owners manual, the ops chk is on the bottom of the page.
http://www.eatonperformance.com/PDFs/TrutracOwner-1.pdf

The 'install' check is easy...

The "put 2 wheels on gravel and floor it" 'operational' check is harder to determine 'correct function' on a all-wheel-drive... espescially when you have TC.

I suggest you find an obsticle (hill/berm/etc) where you can unload a front or rear wheel (wherever you installed the TT), and see what happens (CDL unlocked of course).

 

[hugo]

jarek, just curious, did you have the trutrac 'professionally' setup with correct backlash on gears/preload on bearings?

Non off this things got anything to do with TT working or not.

 

[hugo]

The 'install' check is easy...

The "put 2 wheels on gravel and floor it" 'operational' check is harder to determine 'correct function' on a all-wheel-drive... espescially when you have TC.

I suggest you find an obsticle (hill/berm/etc) where you can unload a front or rear wheel (wherever you installed the TT), and see what happens (CDL unlocked of course).

They work fine most off the time, the noise comes whenever they don?t

 

[rover4x4]

That cant be good. sounded like an 8274 spooling in..

 

[rovercanus]

They work fine most off the time, the noise comes whenever they don?t

This is because the thrust washers are unable to force the gears to mesh together. Remember everyone, it's a limited slip, not a locker.

 

[D Chapman]

They work fine most off the time, the noise comes whenever they don?t

Mine made a lot of noise.

 

[rovercanus]

Mine made a lot of noise.

I think that may be because they don't work well with tires larger then 33" or so.

 

[gmookher]

I vaguely remember somewhere that read the same, ath the TT was fine up to 32"- maybe was a jeep forum..

 

[p m]

Non off this things got anything to do with TT working or not.

This is a correct statement.
Actually, unless the TT is grossly defective, it will work.