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Author Topic: Rear axle noise....  (Read 1344 times)

Brian

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Rear axle noise....
« on: July 06, 2008, 08:48:24 PM »

Anyone???
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Brian

02 Chrysler Concorde Lxi
84 Dodge Crewcab, Cummins/5speed
68 Chrysler Station Wagon 440/auto
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Steve

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Rear axle noise....
« Reply #1 on: July 07, 2008, 04:42:47 AM »

If they're making noise it's too late to repack them
 
Drive the car down a winding road.  If the noise increases on a right or left turn then you have a bearing problem.  Same thing in the front.  If it doesn't change, it may be a carrier problem.
 
Check your oil level
 
May as well do a pinion seal while you're at it
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Brian

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Rear axle noise....
« Reply #2 on: July 07, 2008, 06:42:21 AM »

I fogot to ad when I first posted this but Steve jogged my memory.  When I changed the pumpkin from the 2.76 to the 3.23 the axle bearings were VERY DRY...and they looked a little cooked...I repacked them and reinstalled.
 
So if they were already dry and a bit cooked I guess new axle bearings are in order??? 
 
I should just do them anyway since I will be putting on about 1000 miles on holiday next week.
 
 
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Brian

02 Chrysler Concorde Lxi
84 Dodge Crewcab, Cummins/5speed
68 Chrysler Station Wagon 440/auto
48 Desoto 2dr Sedan flat 6/3spd manual

Steve

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Rear axle noise....
« Reply #3 on: July 07, 2008, 09:54:04 AM »

Brian
 
Go with the Green bearings.  They are sealed (if I recall right) and you eliminate the adjuster.
 
Is it a whining sound that changes as you torque and untorque the rear? 
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Brian

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Rear axle noise....
« Reply #4 on: July 07, 2008, 12:09:24 PM »

I moved my ear as close to the axle bearings as possible and could hear nothing...so I'm pretty certain that it is the third member that is making the noise.
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Brian

02 Chrysler Concorde Lxi
84 Dodge Crewcab, Cummins/5speed
68 Chrysler Station Wagon 440/auto
48 Desoto 2dr Sedan flat 6/3spd manual

Steve

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Rear axle noise....
« Reply #5 on: July 07, 2008, 12:23:04 PM »

And now you have ========= on your forhead huh?
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Brian

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Rear axle noise....
« Reply #6 on: July 07, 2008, 12:30:39 PM »

Quote from: POLARACO
And now you have ========= on your forhead huh?
 

 
I was being EXTREMELY carefull....lot of moving parts I didn't want to meet....
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Brian

02 Chrysler Concorde Lxi
84 Dodge Crewcab, Cummins/5speed
68 Chrysler Station Wagon 440/auto
48 Desoto 2dr Sedan flat 6/3spd manual

Steve

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Rear axle noise....
« Reply #7 on: July 07, 2008, 01:07:43 PM »

 I hear ya
 
Flap Flap Flap Flap
Flap Flap Flap Flap

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Brian

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Rear axle noise....
« Reply #8 on: July 07, 2008, 03:50:37 PM »

Quote from: POLARACO
 I hear ya
 
Flap Flap Flap Flap
Flap Flap Flap Flap
 
Is that the noise your head makes when stuck under the spinning wheel.....
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Brian

02 Chrysler Concorde Lxi
84 Dodge Crewcab, Cummins/5speed
68 Chrysler Station Wagon 440/auto
48 Desoto 2dr Sedan flat 6/3spd manual

Steve

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Rear axle noise....
« Reply #9 on: July 07, 2008, 06:06:18 PM »

No when you get you belt caught in the drive shaft.  Floor boards hurt!

Is that like a howling sound or does it have a grinding sound to it that changes as you change the torque on the rear with the engine.  Coasting, up hill, down hill, match engine speed to vehicle speed on flats. . . .  That's what I am trying to find out.



 
Unfortunately, they make all kinds of noise when up in the air like that.  Hard to tell that way.  Did you check the oil level while it was up?
 
 


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Brian

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Rear axle noise....
« Reply #10 on: July 07, 2008, 08:35:34 PM »

The oil level is fine...I put in the recommended amount...as per the FSM... when I swapped pumpkins.
It's defenitly not a growl...more like a tinny whine, almost sounds like the drum is barely rubbing the backing plate...it does change in volumn and pitch a bit when you feather the gas.
 
Coasting doesn't seem to effect the noise...still there.  Up and down hill seem about the same and on the flats cruising nicely it's just a constant noise.
 
I haven't tried the cornering thing yet...maybe tomorrow evening I can get a little drive time.
 
 
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Brian

02 Chrysler Concorde Lxi
84 Dodge Crewcab, Cummins/5speed
68 Chrysler Station Wagon 440/auto
48 Desoto 2dr Sedan flat 6/3spd manual

Steve

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Rear axle noise....
« Reply #11 on: July 08, 2008, 04:07:56 AM »

Now you got me on that one.  Without hearing it, hard to say.  But this discription makes me think i t may be just normal for that rear.  Don't hold me to that. . . .
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Brian

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Rear axle noise....
« Reply #12 on: July 08, 2008, 04:09:52 PM »

Quote from: POLARACO
Now you got me on that one.  Without hearing it, hard to say.  But this discription makes me think i t may be just normal for that rear.  Don't hold me to that. . . .
 
Someone suggested maybe the pinion bearing is making the noise??
 
I tried the throwing the car back and forth today and again it really didn't seem to make any difference that I could hear....definetly didn't get worse or go away so I guess I'll leave it as is and just drive it until something breaks....
 
OH BTW this is a junkyard score 3.23 in a 489 case I picked up years ago for $50...so this is the first time it's run in who knows how many years.
 
 
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Brian

02 Chrysler Concorde Lxi
84 Dodge Crewcab, Cummins/5speed
68 Chrysler Station Wagon 440/auto
48 Desoto 2dr Sedan flat 6/3spd manual

Steve

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Rear axle noise....
« Reply #13 on: July 08, 2008, 05:56:18 PM »

That's the noise I was looking for in your description.  Either mis matched gears or a bad pinion.  The change should change some as you torque and untorque the rear while driving.
 
But mis matched gears would give you a howel
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chuck lowe

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Rear axle noise....
« Reply #14 on: July 09, 2008, 03:33:56 AM »

i tried that up in the air deal once------like steve said-you hear all sorts of noises------with no preasure on parts it's real easy for sound to be telegraphed from part to part-------i had a wagon once that was making all kinds of sounds from the rear wheels-i had it checked by three diff.  places up and down---------------------------------it ended up being a belt on the right rear tire being broke------there was no shake-just all sorts of noise------that tire was balanced and still wasn't caught-----it was so minimal you had to look and feel real close------the point i'm trying to make is that it could be about any part------go with your first thought-maybe you'll be lucky-----------------------------later
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