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  #1  
Old 05-08-2012, 11:20 AM
Maxfun Maxfun is offline
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Default Wobbling wheels (problem solved)

I have a problem with shaking of my Ranger between 50 and 75 miles/hour

Today we put the 1996 ranger 2wd (200k miles) on a bridge and with two supports we could give the wheels a free spin.

The result was alarming, two wobbling wheels turning, after checking the wheels and tires those are alright, we are now looking for clues.

The u joints seems fine, the diff is not making any noise.

I would like some opinions on what to change:
My own suggestions after some research on the forum:
damaged axlehafts and worn (wheel) bearings so change axle shafts and wheel bearings?

Since the diff is not making any noise i hope it's sufficient to change the axle shafts and wheel side bearings.

Is there any part you would recommend also to change?

Thx in advance for advice.

Regards Fred.
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Last edited by Maxfun; 05-26-2012 at 05:47 AM.
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  #2  
Old 05-08-2012, 04:28 PM
zekew64 zekew64 is offline
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Default Re: Wobbling wheels, need advice on rear axles

I'd change out the axleshafts/axle flanges. As you probably will have to drain the diff fluid to do so, I'd also check your rear gears for wear; also, check the diff fluid for metal particles.

The other thing I would do, also, is to change out bearings and bearing seals.

If this doesn't solve the problem, have your frame and chassis checked to make sure it's straight as well.

Lastly, check to make sure you don't have broken belting in the tires; these will look like the tire isn't truly round--and if you rub your hand over it, you'll tell very quickly just where the belting is broken. And as a warning, I would not drive any longer than necessary (that is, going to get new tires), as broken-belted tires can blow out at any time and cause an unnecessary accident.
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Old 05-09-2012, 11:11 AM
Maxfun Maxfun is offline
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Default Re: Wobbling wheels, need advice on rear axles

@zekew64

Thx a lot for your advice, at the moment we are looking for a donor however in the Netherlands the diff's and rear axles are rare.
About the tires we have them double checked after your remark about broken belts, also thx for that.

If we cannot find a donor we will revise with bearings,seals and axles where needed.

You've been a great help.

Regards Fred.
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Old 05-09-2012, 08:16 PM
cdawall cdawall is offline
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Default Re: Wobbling wheels, need advice on rear axles

I doubt its the axle shafts unless you overloaded the holy hell out of it. Maybe some axle bearings check the pinion those get tons of slop in them.
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Old 05-10-2012, 12:30 AM
Maxfun Maxfun is offline
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Default Re: Wobbling wheels, need advice on rear axles

@Chris, you're right, we try to measure the alignment with micrometre, however if the bearings and diff are bad we dunno what we are measuring so thx for the tip, before ordering i will put them in the lathe to see how the axles are.

I'am also worried about the horizontal slack i can move the axle back and forth for half an inch.

Regards Fred.
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Old 05-15-2012, 02:22 PM
zekew64 zekew64 is offline
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Default Re: Wobbling wheels, need advice on rear axles

Quote:
Originally Posted by Maxfun View Post
@Chris, you're right, we try to measure the alignment with micrometre, however if the bearings and diff are bad we dunno what we are measuring so thx for the tip, before ordering i will put them in the lathe to see how the axles are.

I'am also worried about the horizontal slack i can move the axle back and forth for half an inch.

Regards Fred.
Fred: First, the horizontal slack is normal with C-clip style axles. The C-clips allow the horizontal movement to be able to allow suspension movement.

Second, the differential is the entire assembly--it's the individual gears that make it up that you want to check. To do that, use a feeler gauge (specifically think piece of metal that is a certain thickness) to tell what your gear backlash is (the distance the gear travels before engaging the teeth on the next gear).

Third, if your bearings are bad, you'll hear the noise that the pinion gear will make (it'll sound like a growl coming from it, or it'll sound like the bearings themselves are loose).

Fourth, you shouldn't need to put the axles on a lathe--simply remove them, and put them on a flat surface that allows the flange to hang over the edge (like a table). If you roll the axle on a table, and it is bent or out-of-round, you'll know very quickly. Also, you can run your hand over it (after the diff oil is cleaned off of it) and see if you can feel a slight bend or a place in the axle that is not straight. The last thing you can do is to stand the axle on end, and look at it--you'll be able to tell if the axle shaft is straight or not.
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SPECS: 2.3 I4; Rebuilt motor at 194,263 miles; straightened driveshaft when engine was rebuilt

FIRST MODS: 2" suspension lift and rear disc brake conversion
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  #7  
Old 05-15-2012, 02:46 PM
Maxfun Maxfun is offline
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Default Re: Wobbling wheels, need advice on rear axles

@zekew64

Thx for the thorough explanation, in the meantime we stopped searching for a donor, i brought the Ranger to a specialist to overhaul the diff and axle and bearings.

For the moment the conclusion is that my right axle is bend, my supplier is ordering the axle in the USA with wheel bearings and sealing to start with.
Like you, he also mentioned already that the horizontal slack is not to be worried about.

The only thing the guys at Bell asked us is if the axle is a 28 spline or 31 spline, i am almost sure its the 28 but to be safe we will count the teeth just to be sure.
Tomorrow we will open the diff and see what the gear backlash is.
I will also take the wheels to a specialist to check for damages, there must be a reason why the axle is bend and to achieve that i think the wheels had some severe impact too.
Thanks for your effort!!!! i really appreciate.

I also ordered new ball joints for the front, new fuel assembly and muffler to replace the noisy cherry bomb.

After this my 200K miles Ranger will be a smooth ride again.

Regards from Amsterdam.

Fred.
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Old 05-15-2012, 07:18 PM
cdawall cdawall is offline
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Default Re: Wobbling wheels, need advice on rear axles

Its a 28 spline. It would be cheaper for a junkyard axle...hell it would be cheaper to get a 31 spline expo axle and flip the perches but its your money.
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  #9  
Old 05-16-2012, 02:12 AM
Maxfun Maxfun is offline
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Default Re: Wobbling wheels, need advice on rear axles

@cdawall, i tried the junkyards over here but no success.
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  #10  
Old 05-26-2012, 05:23 AM
Maxfun Maxfun is offline
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Default Wobbling wheels (fixed)

Ok problem solved, the right rear half shaft (rear axle) is bend, replaced the axle and wheel bearings.

The diff still is in good shape and that after 210k miles.

Next week replacing the upper and lower ball joints and the ride will be smooth again.

Thanks a lot for everybody who contributed to the solution.

Regards Fred.
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