Rear end grease behind backing plate, grinding noise.
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Supreme Member

Joined: Jan 2003
Posts: 2,043
Likes: 3
From: San Diego
Car: 1994 Trans Am
Engine: LT1
Transmission: Auto
Axle/Gears: 3.23
Rear end grease behind backing plate, grinding noise.
I was removing my brakes this morning when I found I have black rear end grease leaking behind the backing plate going into the rear. And the grinding noise is coming from there as well I believe. So I need a repair bearing ( anyone know a ball park price?) slide hammer, bearing puller attachment ( does Autozone rent those out? and what do they attach to, a ratchet?) a rubber mallot to drive the 'axle saver' in? Will I need new grease too?
I got all that from a search, but what is the official name of the part I need at Autozone and does it come with that seal?
Thanks guys!!
-Kevin
I got all that from a search, but what is the official name of the part I need at Autozone and does it come with that seal?
Thanks guys!!
-Kevin
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Check the axel. If it's grooved, you need an off-set bearing. I purchased mine from CarQuest p/n BGS RP 5707. I can't recall if they came with seals or not. I banged the bearings in with a 2x4 and a four-pound hammer.
JamesC
JamesC
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Supreme Member

Joined: Jan 2003
Posts: 2,043
Likes: 3
From: San Diego
Car: 1994 Trans Am
Engine: LT1
Transmission: Auto
Axle/Gears: 3.23
Originally posted by ede
long piece of black iron pipe works pretty good instead of a slide hammer. yeah you'll need new oil, it'd be foolish to reuse it.
long piece of black iron pipe works pretty good instead of a slide hammer. yeah you'll need new oil, it'd be foolish to reuse it.
Joined: Sep 2005
Posts: 27,896
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Have a link to a pic of one?
Go to Home Depot or something, look in the plumbing section. Even better than a pic.
You stick it through the rear after both axles are out, and catch it on the back of the bearing on the opposite side, and knock the bearing out with a hammer. Takes like 2 seconds a side if you stop to pop a cold one halfway through each side.
About a 6' piece of ¾" pipe is perfect.
Personally I prefer galvanized steel over black iron; I guess that makes me a pipe snob.

You need something like a large flat-nose punch or drift or VERY DULL cold chisel, to put the new bearing in (and of course a hammer.... gotta have a hammer for ANY serious car work); and a flat block of wood to lay up against the seal, for that. One mighty whack on the wood with the hammer. DO NOT try to tap the seal in around the edge, it will leak every time.
Thread Starter
Supreme Member

Joined: Jan 2003
Posts: 2,043
Likes: 3
From: San Diego
Car: 1994 Trans Am
Engine: LT1
Transmission: Auto
Axle/Gears: 3.23
Okay take the axles out, remove the posi or rear end; right?, slide in the 6ft pipe have it hit the inside of edge of the opposite side bearing and whack it with a hammer? That makes sense now.
But what if one bearing is still good? Wont the pipe, as you're banging on the opposite side, destroy the bearing the pipe is resting on?
But what if one bearing is still good? Wont the pipe, as you're banging on the opposite side, destroy the bearing the pipe is resting on?
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Joined: Jun 2005
Posts: 409
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From: desert
Car: only GM,88 camaro, 91r/s camaro, 91
Engine: Clean oil, looks fresh, no leaks
Transmission: Bright Red, never burnt, no leaks
Axle/Gears: currently whining
hey all! ok im lost hear!! if he is gonna replace the bearings in the pumpkin [Differential] why do u need to pull the axcel's cant you replace the rear pinion bearing just by takin the diffenential cover off?
im going to be doing the front pinion seal and bearing somtime real soon!! and im educating my self by readnig any thing related !! Thanks!
im going to be doing the front pinion seal and bearing somtime real soon!! and im educating my self by readnig any thing related !! Thanks!
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Originally posted by gottfuel
hey all! ok im lost hear!! if he is gonna replace the bearings in the pumpkin [Differential] why do u need to pull the axcel's cant you replace the rear pinion bearing just by takin the diffenential cover off?
im going to be doing the front pinion seal and bearing somtime real soon!! and im educating my self by readnig any thing related !! Thanks!
hey all! ok im lost hear!! if he is gonna replace the bearings in the pumpkin [Differential] why do u need to pull the axcel's cant you replace the rear pinion bearing just by takin the diffenential cover off?
im going to be doing the front pinion seal and bearing somtime real soon!! and im educating my self by readnig any thing related !! Thanks!
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