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steve robson
Dodge Dakota
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6/10/2005
12:41:16

Subject: differential
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I live in Brazil and own a 99 3.9 dakota sport.
There is a knocking coming from the back of the car going over rough surfaces, I have traced the source of the noise to the rear wheels. With the hand brake off, when I rock the car from side to side, there is a knock coming from both rear wheels.
If I lift the rear of the car so both wheels are off the ground, again with the hand brake off, I can move the wheels in and out about 2mm.
There is no noise from the diff when driving, but the free play is worrying. How do I compensate for the wear, is it possible to move the outer tubes out from the diff to reduce the clearance, or do i need a new diff.

Thanks to whoever helps

Steve Robson



Just Looking
Dodge Dakota
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6/10/2005
16:36:45

RE: differential
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Mines like that also...

It due to the fact C-clips are used to hold the axle shafts in. It not like the heavy duty rearends that have bolted in outer bearings.

I guess u could always use washers and minimize the slack but id be worried about haveing everything to tight and causing problems



LilRed01
Dodge Dakota
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6/12/2005
18:21:14

RE: differential
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that side to side noise when you rock it that way is normal. Like Just Looking said its the C-clips that hold the axles in. That clunk your looking for has got to be something else.
You could try checking for broken springs, loose shocks, loose spare tire, rocks stuck in the spare tire or bumber, u-joints will sometimes clunk over bumps if there is a load change. other then that youll have to take it too someone you trust or wait till it gets worst.

LilRed01



93dak4x4
Dodge Dakota
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6/12/2005
20:00:18

RE: differential
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if you know for sure that it is the rear end, you can get shims to adjust the carrier in the housing, if its not an adjustment issue and a problem with wear in bearings then you are SOL and need to replace the bearings in the rear. your axles should not move back and forth in the housing.



steve robson
Dodge Dakota
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6/25/2005
09:18:42

RE: differential
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Ok.
Fixed the knocking at the rear. As I said, with the hand brake off, and rocking the car side to side, the knocking was coming from inside the rear wheels. Removed the diff cover and rocked the car, and found a lot of clearance between the half shafts and the centre pin of the diff. The clearance was 2mm and 3mm respectively. By the way new rear bearings were fitted. Removed the half shafts (strangely easy) and had the ends of the half shafts welded and machined back down to give more suitable clearances (Checked to see how much money I had in the bank in case I had to buy a new diff)
Rebuilt it all and rocked the car again, no Knocking, test drive no knocking. I have done about 250 miles since, and so far no problems.
I am now making brackets to weld on top of the axle tubes to make a rear stabilizor bar.

Steve



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