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Topic: Rear-end rotary noise (Read 1655 times) |
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Wadman
Junior Member
I'm a YaBB newbie!
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Rear-end rotary noise
« on: Oct 8th, 2006, 10:16pm » |
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At slow to moderate speed, there is a 'rotary' whine from right rear, but only turning left not right.
Is it a rear wheel bearing or worse?
If a bearing, what tools are required for DIY?
Scorpio Ultima 2.3L petrol estate 1998 31,000mls.
Wadman
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Kjetil S
Senior Member
2001 BMW 520iat
Posts: 1419
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Re: Rear-end rotary noise
« Reply #1 on: Oct 8th, 2006, 10:28pm » |
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Wheel bearing. Almost certain of it. When you do left turns, the weight of the car shifts over to the right side and puts pressure on the bearings.
Take a look here and here.
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http://uncyclopedia.org/wiki/Norway
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Wadman
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Re: Rear-end rotary noise
« Reply #2 on: Oct 8th, 2006, 11:01pm » |
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What a speedy and helpful answer, I am very impressed
Many thanks
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taliban aka Cheekyboy2
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Re: Rear-end rotary noise
« Reply #3 on: Oct 9th, 2006, 12:38am » |
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31000 miles, wow!
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Simmo
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Re: Rear-end rotary noise
« Reply #4 on: Oct 9th, 2006, 7:22am » |
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This will tell you all about the job. Click on the pictures to enlarge. As is said in the article the new hub nuts are much biger than the old ones so you can either buy new nuts from Ford or get a 41mm socket for the new nut. The old nuts are 32mm. The 200ft/lbs torque required to tighten them is way beyond a DIY torque wrench so they are equally hard to undo and usually need a 'breaker bar' in order to get the leverage. When you have done done the job be sure to check the nut after a few good runs to ensure it is still correctly torqued up. Thread lock should prevent any problems BUT it has been known for them to come loose,possibly because they were not 'torqued' up correctly in the first place. The 'brake wind back' tool mentioned is also a 'must' (about a fiver) as the piston has to be wound back as it is threaded. You cannot use grips or clamps as you can on the fronts.
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Wadman
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Re: Rear-end rotary noise
« Reply #5 on: Oct 15th, 2006, 10:40am » |
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We downloaded the info from the sites given by Kjetil S on the bearing replacement procedure. It seems to us these instructions relate to drum brakes and not the disc version I have. Am I wrong?
Wadman
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Kjetil S
Senior Member
2001 BMW 520iat
Posts: 1419
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Re: Rear-end rotary noise
« Reply #6 on: Oct 15th, 2006, 11:39am » |
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I've never seen a Scorpio with drum brakes 
Btw, can't see anything related to drum brakes in those two pdfs 
(I just re-checked just to be sure).
It is basicly:
*Remove the wheel
*Remove the caliper
*Remove the disc
*Remove the hub
*Remove the bearing housing
*Take the bearing housing apart (this is the tough part)
*Refit in reverse order
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Bobbit
Full Member
Scorpio 2.3 ghia x estate
Posts: 253
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Re: Rear-end rotary noise
« Reply #7 on: Oct 15th, 2006, 12:58pm » |
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Just had the same on 96 ghia estate, when dismanted found the stub axle had a huge groove in it where the bearing had collapsed.
I would get it fixed asap to avoid same.
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mr._floppy
Junior Member
Posts: 100
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Re: Rear-end rotary noise
« Reply #8 on: Oct 16th, 2006, 12:37am » |
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I've bought a bearing and hub carrier in readiness for my imminent N/S rear wheel bearing failure , I keep it in the boot.
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
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Re: Rear-end rotary noise
« Reply #9 on: Oct 16th, 2006, 1:06am » |
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on Oct 16th, 2006, 12:37am, mr._floppy wrote:| I've bought a bearing and hub carrier in readiness for my imminent N/S rear wheel bearing failure , I keep it in the boot. |
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F1 style, 20 second quick change Mr Floppy? 
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Wadman
Junior Member
I'm a YaBB newbie!
Posts: 68
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Re: Rear-end rotary noise
« Reply #10 on: Oct 16th, 2006, 8:47am » |
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Gentlemen
I thank you one and all for help
Regards
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Wadman
Junior Member
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Re: Rear-end rotary noise
« Reply #11 on: Nov 6th, 2006, 10:23am » |
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Does anyone know the the Ford part No for the wheel bearing?
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Wadman
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Radio code
« Reply #12 on: Nov 8th, 2006, 12:07pm » |
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Just changed the battery and of course have no idea of the code to restore the radio because this was the original battery. Ford dealer will do it for £20 anybody know a less painless way
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Kjetil S
Senior Member
2001 BMW 520iat
Posts: 1419
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Re: Rear-end rotary noise
« Reply #13 on: Nov 8th, 2006, 12:15pm » |
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Take the radio out and take a note of the serial number. A lot of members here have the software to calculate your code (for free ), and I'm sure some of them will speak up soon.
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Snoopy
Administrator
Very old.BAD tempered and missing friends.
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Re: Rear-end rotary noise
« Reply #14 on: Nov 9th, 2006, 7:51am » |
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Send me your Radio Serial Number and I will send the code back for you
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Wadman
Junior Member
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Re: Rear-end rotary noise
« Reply #15 on: Nov 9th, 2006, 12:34pm » |
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My main problem is I am handicapped and a simple task of 'removing the radio' is not so simple. The car is in for it's annual service tomorrow and the garage will re-activate the radio for £20 , the cost of removing/replacing the radio, and store my code/ser no on their database for future reference.
However, I will ask the garage for the radio s/no so as to be able use the kind facillities offered by members, should the problem arise again.
Regards
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Wadman
Junior Member
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Posts: 68
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Re: Rear-end rotary noise
« Reply #16 on: Nov 30th, 2006, 10:31pm » |
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Took the car for rear wheel bearing test. Was informed that cost of check was £30. How can I do this check myself? I do have a hydraulic jack
Wadman
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mr._floppy
Junior Member
Posts: 100
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Re: Rear-end rotary noise
« Reply #17 on: Nov 30th, 2006, 11:04pm » |
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A rear wheel bearing test ?
The overwhelming experience of people on this board is that there is NO test for the state of rear bearings .
Lucky people get squeaks, squeals ( like mine are doing at the moment ), groans, rumbles, wandering steering as a warning of impending doom.
Other poor souls get no warning at all as a rear bearing collapses at 70mph with serious subsequent brake and caliper damage .
The best you can do is jack the rear wheels up and check it for any bearing movement or any untoward sounds when the wheel is spun.
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Wadman
Junior Member
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Re: Rear-end rotary noise
« Reply #18 on: Dec 1st, 2006, 3:40pm » |
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Thanks to Mr Floppy
If as you say, there is no definative manual method to check the bearigs, what was the guy charging £30 going to do - don't go there!
What started all this was a pronounced offside rear wheel noise when slow turning left, and only left. At only 32000 miles on the clock should one go thro' the laborious exercise of dismantling the hub just in case, ie rear bearing collapse at 70mph etc?
Wadman
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mr._floppy
Junior Member
Posts: 100
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Re: Rear-end rotary noise
« Reply #19 on: Dec 1st, 2006, 8:44pm » |
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You could try unloosening the big bearing nut ( 32mm socket, I think ) by half a turn , if the noise gets worse or disappears at least you know it's the bearing .
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