Any diff experts here?

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DodgeLad

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What could cause a shim to work it's way into this position? I'm bending it a little so you can see the problem better.
 

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..........It was prolly never put in right when it was assembled, or there is not enough bearing preload...or something is loose...kim.........
 
oldkimmer said:
..........It was prolly never put in right when it was assembled, or there is not enough bearing preload...or something is loose...kim.........

AJ/FormS said:
^^What he said.
Or the housing is bent

Agreed x2 Gents...
DodgeLad.
Sorry for your troubles--- see that cast in 'circle' to the immediate left of Your thumb??
There is a corresponding 'circle' on the right case side...Purpose, a 'case spreader tool'
When installed, well, spreads the case ( about .015 ) so carrier shims can be installed.

I have actually seen 'gorillas' beat shims in with a hammer !!!
& seen 'flat rate flyers' use a thinner shim rather than use the tool !!!

Sorry to get off on a rant DodgeLad... I am no diff 'guru'
This kinda s*** chaps My backside.

There are Really Superlative Diff builders here, do not waste any more $$$
on cretins !!

Again, Sir, apologies for the rant.
 
well I am a flat rater.. and tat still is a crappy rear diff build, it wasn't set up with enough preload when originally built.. worked loose that means the ring gear now has a pattern in it, and may make noise.... my 2cents....
 
A shim that thin is almost impossible to install without a case spreader. Unless you know for sure that it was installed all the way in, chances are that was as far as the installer could get it. If it were installed behind the carrier bearing like they should be, that wouldn't look like that.
 
........By ur comment it must be a recent rebuild....What size diff is that......if it was in place it couldn't come out that far as the axle would be thru it........ofcourse they prolly rammed the axle past it.......kim........
 
no case spreader to load the housing, typical for driveway warriors that dont know what one is. This is a case spreader, the black "nubs" go in holes on diff and a big *** wrench on upper bolt "spreads" case apart so you can get shims in. The other pic is a bearing puller/installer, crucial to setting up diffs. An inch pound torque wrench or spring gauge for pinion preload, dial gauge, depth checker and "set up" bearings (honed out to slide on by hand) are also needed to get them right. Even doing them the correct way, I could always beat the flatties because the correct way is quicker, assuming you dont get a crap gear set....those are fun. :banghead:
 

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Thanks for all the insight.

It is a Dana 30 front axle on a 95 Grand Cherokee. Last summer, I had a shop do the the front D30 and rear D35 with Truetracs and 4.56s. Been really noisy since the rebuild. They told me not to worry about it. The shim wasn't like this right after the rebuild. It worked its way to that position.

Oh, the fluid was black and silvery.
 
Thanks for all the insight.

It is a Dana 30 front axle on a 95 Grand Cherokee. Last summer, I had a shop do the the front D30 and rear D35 with Truetracs and 4.56s. Been really noisy since the rebuild. They told me not to worry about it. The shim wasn't like this right after the rebuild. It worked its way to that position.

Oh, the fluid was black and silvery.

Silvery oil? They did it wrong. And yes you should worry about it. The gears from this point forward will probably always be noisy.
 
Silvery oil? They did it wrong. And yes you should worry about it. The gears from this point forward will probably always be noisy.

Don't be concerned about me worrying. I'm doing plenty of it. We take this vehicle to the middle of nowhere almost every weekend. A diff exploding would be catastrophic. Thx again.
 
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