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        General >> Problems >> Rear bearings?
        
(Message started by: Chieftain on Apr 17^th, 2007, 8:54am)

Title: Rear bearings?
Post by Chieftain on Apr 17^th, 2007, 8:54am

Have a lound permanent drone from the rear, looking at the buyers guide it would suggest that it is the rear bearings.
A/ is there a good way of testing.
B/ should both sides be changed

The noise rises and falls with variation in speed as well.
Any specail tools required to change?

Title: Re: Rear bearings?
Post by the_boogeyman on Apr 17^th, 2007, 9:13am

i asked this a few days ago but know bothered to answer, you dont need any specail tools as they are just pressed in, i have the same noise but cannot find out which side it is, as you dont get the wobble until the whole side has collapsed, by then you will need a new hub and bearing, the bearings are about £50 each from any parts shop, fronts are about £30 each.

Title: Re: Rear bearings?
Post by jonnycab on Apr 17^th, 2007, 9:29am

A loud permanent drone could also be down to a worn diff :-/

I found a good way to check if the bearing is on the way out was too feel the centre of the wheel after being on a run. The wheel with the worn bearing tended to heat the wheel up a fair bit....then again, binding breaks will also heat the wheel up.

If it is the bearing & it is close to breaking up, then a squeak or squeal can be heard when cornering, when that wheel is on the outside of the bend. Also if you just roll the car forwards or back slowly & you hear a kind of creeking noise, then that bearing is deffinately shot & probably the hub as well :)

Hope this helps ;)

Title: Re: Rear bearings?
Post by the_boogeyman on Apr 17^th, 2007, 10:30am

well i have noticed that when i corner mine goes a little quiet, rather then grind.
so far i have had to replace mine every other year

Title: Re: Rear bearings?
Post by Chieftain on Apr 17^th, 2007, 11:17am

MMmmmmmmm not sure now dont want to do work that is not required, did notice yesterday that the noise was consistent, but less at higer speeds.

Title: Re: Rear bearings?
Post by Tompion on Apr 17^th, 2007, 11:30am

I wouldn’t bank on them being easy to remove, mine were incredibly tight.
Bought an extractor for the inner tracks, but had to grind them off.
It wasn’t that they’d spun & seized, you could still see the original machining in good condition.
Maybe they changed the tolerance on later ones?
Fitting was a bit easier as I could heat/cool parts as appropriate – but still a bit of a struggle.

The best way I’ve found to test them is to follow the procedure for hub removal but don’t undo the centre nut.
You can then pull out the hub far enough to rotate it around the shaft – any roughness is easy to detect, might feel a little stiff due to the grease & seals, but nice and smooth. A side benefit to this is you can clean the ABS sensor ring at the same time.

Dave

Title: Re: Rear bearings?
Post by Chieftain on Apr 17^th, 2007, 1:48pm

so i will try the heat test and hope that gives a guide to bearings or diff unless there is a foolproof way of determining :(

Title: Re: Rear bearings?
Post by the_boogeyman on Apr 17^th, 2007, 2:58pm

i must say that as you get faster the noise seems to go away, but is covered by the road noise

Title: Re: Rear bearings?
Post by mr._floppy on Apr 17^th, 2007, 6:22pm

Jack up the rear wheel and check for looseness of wheel.

I found rear bearing replacement a bit beyond my DIY skills, with hub pullers, oversized sockets, a professional sized torque bar and other specialised tools needed.
I left it to the professionals :-*

Title: Re: Rear bearings?
Post by jonnycab on Apr 17^th, 2007, 11:53pm

When I did the bearings on my old Scorp,

I used my arms, legs & most of my body weight as a hub puller......an oversized socket (32mm) was £3.50 from local factors..... used a breaker bar with a scaffold pole slipped over it as a professional size torque bar...... ;D

& as far as specialised tools go (for fitting the bearings)....A night in the freezer for the old hub & bearings, & the new bearings meant that come morning the old bearings tapped off quite easy & the new ones tapped on quite easy as well ;)....

.....put them in sealed plastic bags though, otherwise your next beefburger ain't gonna taste quite right ;D

Title: Re: Rear bearings?
Post by Chieftain on Apr 18^th, 2007, 7:23pm

Well tried the hot test today and r/h/r seems warmer than l/h/r so tommorow will jack car up and chack for rim rock to confirm, also though a slight squeak going round corner on the side I think is affected. More later :)

Title: Re: Rear bearings?
Post by the_boogeyman on Apr 19^th, 2007, 4:12pm

well i changed my n/s hub today but its still droning

Title: Re: Rear bearings?
Post by macroy on Apr 19^th, 2007, 4:21pm

I have found that noises are very deceptive.I had a very bad knock coming from the front nearside.The fault was the front offside anti-rollbar bush.Roy.

Title: Re: Rear bearings?
Post by jonnycab on Apr 20^th, 2007, 1:54am

on 04/19/07 at 16:12:31, the_boogeyman wrote:

well i changed my n/s hub today but its still droning

Time to check the diff out then ;)

Have you checked the oil level in the diff....un-screwing the rear plug with a 10mm allen key & putting your finger in the hole. If your finger has oil on then the level is fine, if not, then it needs a top up.
I use EP90 Hypoid gear oil & plenty of it, because my diff has a leaking pinion ::)

As Macroy says, it is difficult to precisely pin-point a noise.

If it is the diff that is droning, then you could try driving along with the back seat folded down & have someone else sitting next to you listening to the noise.
If you both agree that it is coming from the rear & in the centre, then it's a good chance that it could be the diff :)

Title: Re: Rear bearings?
Post by Chieftain on Apr 20^th, 2007, 9:58am

another low noise is directional tyres, which will give the same noise as on a L/rover.

Title: Re: Rear bearings?
Post by tintin on Apr 20^th, 2007, 11:26am

my diff makes a noise, only after its "warmed up" after 30-40 miles, and only noticeable on the motorway at higher speeds. i would describe it as more of a whine than a drone though, quite high pitched. was like that when i got it, and isnt getting any worse.....

im waiting to see what happens next ;D

Title: Re: Rear bearings?
Post by jimhumphries2@hotm on Apr 28^th, 2007, 10:59am

ive got the problem noise coming from passenger side back.had it for months now doesnt need any distance for it to start.

Title: Re: Rear bearings?
Post by jimhumphries2@hotm on Jun 11^th, 2007, 2:12pm

sorry i havent replied lately but ive been in hospital.nothing to do with the car i hasten to say