Pinion bearing failed

mike diesel

I'm alright.
Sep 6, 2012
4,005
0
36
SLC, Utah
Yea I had to hammer it out. I even had to go buy a bigger hammer to get the job done lol. The inside of the race looks the same as the shaft.
 

DewDewMax

Drive fast, take chances
Jul 9, 2014
105
0
16
Sudbury Ontario
Honestly I like the welded rear of the single cab I got now best, but it's not for everyone. The aam is super nice on the street. Even of the aam does wear out i bet it lasts a hell of alot longer than a g80, but I was over 500 hp, u have double that so it might not last as long for u.

X2 on the welded diff! Cant go wrong with cutting out the g80 and running a mini spool as well.
 

mike diesel

I'm alright.
Sep 6, 2012
4,005
0
36
SLC, Utah
Anyone have any input on USA standard brand ring and pinion gear sets? Only reviews I can find are for small jeeps. Nothing behind 1000+ hp diesels.

I did find where a guy said the USA standard brand is the exact same thing as the grizzly stuff but doesn't have the "quality surface finish" that Yukon has. He said it's the same material, heat treatment, every thing...kinda skeptical. I'd hate if I sheard the pinion off.
 

matt78

Finally boosted launches
Sep 10, 2012
924
0
0
texas
I have the aam locker in my truck. I have been running it for around 2 years. No problems with it,i have towed light and ran on the track a few times. For the price I believe it is a good bargain.
 

Tothemax

xgmtech
Oct 16, 2014
607
8
18
new york
I have the Detroit true trac and love it. i have put a good amount of abuse on mine and 12k dd miles with no issues.
 

moparkxracer

Well-known member
Jun 25, 2010
2,309
33
48
Out and about
I'm running the grizzly locker in mine, you can hear it unlocking when cornering other then that I have no issues out of it. I've beat on it for a while now. DHD sells the parts to do bigger axles down the road if you decide to go that route later, keeping the same locker. I'd do Timken bearings you get what you pay for.
 

mike diesel

I'm alright.
Sep 6, 2012
4,005
0
36
SLC, Utah
Definitely not cheaping out. I don't want to do this again. Just ordered a genuine AAM ring and pinion set. Going to order a timken bearing set and install kit. Still undecided on which locker setup, but more than likely going with the tracrite out of a Dodge AAM.
 

TheBac

Why do I keep doing this?
Staff member
Apr 19, 2008
15,611
1,868
113
Mid Michigan
Sorry to see the damage, Mike. You didnt mention how you ran, though. Do ok?

IIRC, isnt the Dodge unit similar to the TrueTrac? If so, you'll be fine. Damn, Jesse -- $575?!? Good price. :)
 

mike diesel

I'm alright.
Sep 6, 2012
4,005
0
36
SLC, Utah
Sorry to see the damage, Mike. You didnt mention how you ran, though. Do ok?

IIRC, isnt the Dodge unit similar to the TrueTrac? If so, you'll be fine. Damn, Jesse -- $575?!? Good price. :)

I was very happy with my track times. I clicked off a 10.72@135.

And yes the Tracrite is just like the true trac but doesn't have an as aggressive bias. I'm finding mixed specs on the true trac, some say it has a 3:1 bias and some say 5:1. The dodge unit is 2:1.
 

WVRigrat05

Wound for sound
Jan 1, 2011
3,081
4
38
36
French Creek, West Virginia
Unless the true trac has changed since2007- 2010. They are junk, had 3 friends 1 had a jeep with a ford 8.8, 1 with a 10 bolt 2006 Chevy, and one with a 8.1l 2003 Chevy, all 3 had the bolts back out of the ring gears, the jeeps was not lock tighted, but I fore warned the other two and they used new bolts and lock tited the shit out of everything, still scattered parts everywhere.
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,681
5,835
113
Phoenix Az
It's definitely not a 5:1 bias. That would be pretty damn tight and 1 wheel peels around corners most likely wouldn't happen. Knowing that guys still can get one tire spinning around corners fairly easily but not as easy as the dodge unit tells me it's a 3:1.

I won't run either. The g80 will just get replaced when the time comes

As for gears, ya did right. US gear isn't something I would run in your truck. Aam or Yukon are better suited. And that pinion of yours is definitely a paper weight. I know I'm late to the game here but I see no one really answered you lol.
 

mike diesel

I'm alright.
Sep 6, 2012
4,005
0
36
SLC, Utah
It's definitely not a 5:1 bias. That would be pretty damn tight and 1 wheel peels around corners most likely wouldn't happen. Knowing that guys still can get one tire spinning around corners fairly easily but not as easy as the dodge unit tells me it's a 3:1.

I won't run either. The g80 will just get replaced when the time comes

As for gears, ya did right. US gear isn't something I would run in your truck. Aam or Yukon are better suited. And that pinion of yours is definitely a paper weight. I know I'm late to the game here but I see no one really answered you lol.

I won't even consider another g80. Screw that.

And as far as bolts backing out on the ring gear, I'd say that was installer error. I never hear about the dodge tracrite having many issues either.
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,681
5,835
113
Phoenix Az
I won't even consider another g80. Screw that.

And as far as bolts backing out on the ring gear, I'd say that was installer error. I never hear about the dodge tracrite having many issues either.

not everyone can handle one :roflmao: :angel:.

are you going to do the gear setup yourself?
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,681
5,835
113
Phoenix Az
I was debating doing it myself. But am nervous about it a little.

its sorta like setting up a trans except you will be pulling things in and out 3-5 times to get the gear mesh right (time consuming). There is a bit of an art to it but its not too terrible.

if you decide to do it, always do your first assembly with the stock shims/preload first. 8/10 times, its about as good as you can get! specially with a quality gear set like you will be using.

you will need a dial indicator with some sort of base so you can check back lash and grab some gear marking compound from a GM dealer (cant remember the part number off the top of my head but i have a thread here asking for it). A setup bearing for the pinion would save you alot of time and keep you from killing the new bearing you will have bought. the pinion shim goes under the bottom pinion bearing and that bearing must be pressed on. you can see how that can be a pain if you have to adjust it.

when you get the new carrier, if you have a lathe, throw it on there to check and make sure the ring gear surface is completely flat. if you dont have a lathe, take a flat file and run all the way around the surface with it to knock any high spots down.

when you check backlash, check it on every other tooth. it takes a while but it will tell you if the carrier has too much run out or if there is a problem somewhere on the ring or pinion or even the bearings.

some say you need a pinion debth measuring tool but since your going with stock gears, you would be fine without it. ive done plenty of gear installs without issue without one. the gear marking compound tells you alot anyhow.

Make sure you read up on how to read the markings and adjust from there. you can always post here and i or others who have done enough installs can guide ya.
 
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WVRigrat05

Wound for sound
Jan 1, 2011
3,081
4
38
36
French Creek, West Virginia
I was debating doing it myself. But am nervous about it a little.

It's not bad, well if you have someone that knows about them to help you the first time, I know this old man that builds race cars, he helped me with all mine until I learned, the aam is easier because you don't have shims but they are easy to mess up if you don't know specs or what your doing.

You could read up on it for 10 min. and you'd figure it out.