Mazda bounty / ford courier , wheel bearing harmonic?

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Mazda bounty / ford courier , wheel bearing harmonic?

Postby Trundle » Tue Apr 16, 2013 9:18 pm

So i have a customers bounty that has a phantom issue ,
when driving it expecially on rh corners there is a horrible harmonic / noise from the lhf , Straight away i ensured it wasnt wheel/tyre buldge flat sport un ballance by rotatin side to side and front to rear,
Followed up by removing the hub and inspecting the wheel bearing , the outer race was resonably cooked , brown and had some hair line cracks due to the fact that the manual hub had no sealent/gasket and water had got in, so obviously i renewed the bearings etc and test drove it , still the problem arose ,
Since then i have done the following ,
dial guaged the fron and rear disc/drum and hub faces for run out ,
test driven in 2 and 4wd , hubs in and out , no change ,
problem still arises with lhs on grass ,
checked all ball joints , wheel bearings for play and tie rods etc ,
Im convinced it is front end as you cant feel it through the steering wheel ,
it is also definatly lhs as it is exagerrated on rh turning corners ,
Has anyone had simular issues with these vehicles , obviously the vehicles are very common for cracked heads , rear diffs and gearboxes ,
Its not very often i have such trouble diagnosing such a basic vehicle so i hope someone could shed some light ,
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Re: Mazda bounty / ford courier , wheel bearing harmonic?

Postby Smurf » Tue Apr 16, 2013 9:22 pm

What is the tyre wear like? Is there any scalloping in the tread?
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Re: Mazda bounty / ford courier , wheel bearing harmonic?

Postby Trundle » Tue Apr 16, 2013 9:30 pm

none at all i have rotated the tyres front to rear side to side to elliminate them being the fault and the noise continues when the lhs is on the grass also as i had considered a toe issue
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Re: Mazda bounty / ford courier , wheel bearing harmonic?

Postby Crash bandicoot » Tue Apr 16, 2013 11:16 pm

basic huh.... :lol:
question number 1 what year is it?

question number 2 does it have manual hubs or auto hubs?

question number three. has it had a recent wheel alignment?
Waiter...there is a drought in my glass.
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Re: Mazda bounty / ford courier , wheel bearing harmonic?

Postby Trundle » Wed Apr 17, 2013 8:47 pm

02 , manual hubs so its not cv/front diff related , hasnt had a wheel alignment but the noise remains if you put the lhf wheel on grass and goes when weight is off lhf wheel i.e on lh turns ,
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Re: Mazda bounty / ford courier , wheel bearing harmonic?

Postby Trundle » Wed Apr 17, 2013 8:47 pm

Trundle wrote:02 , manual hubs so its not cv/front diff related , hasnt had a wheel alignment but the noise remains if you put the lhf wheel on grass and goes when weight is off lhf wheel i.e on lh turns ,


It has a taper wheel bearing not a press type
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Re: Mazda bounty / ford courier , wheel bearing harmonic?

Postby ladeda » Wed Apr 17, 2013 9:04 pm

wishbone bushes worn?
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Re: Mazda bounty / ford courier , wheel bearing harmonic?

Postby ladeda » Wed Apr 17, 2013 9:10 pm

left hub hotter than the right after a good drive?
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Re: Mazda bounty / ford courier , wheel bearing harmonic?

Postby Crash bandicoot » Wed Apr 17, 2013 9:51 pm

are the backing shims on the brake pads???
Waiter...there is a drought in my glass.
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Re: Mazda bounty / ford courier , wheel bearing harmonic?

Postby Petemcc » Thu Apr 18, 2013 9:01 am

had a similar thing on a surf. sorry if i get some of the names wrong. there was crap in where the cv stub axle goes through the hub (and Im calling the hub the bit that the wheel bearings run on and the axle goes through the middle of it). The axle was binding up in there it would catch and the oscillate around in the hub. made a really weird wirring noise and would not happen all the time.
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Re: Mazda bounty / ford courier , wheel bearing harmonic?

Postby Trundle » Thu Apr 18, 2013 1:42 pm

ladeda wrote:wishbone bushes worn?


all ball joit a arm bushes all mint ,
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Re: Mazda bounty / ford courier , wheel bearing harmonic?

Postby Trundle » Thu Apr 18, 2013 1:43 pm

ladeda wrote:left hub hotter than the right after a good drive?

Hubs are same temp with infared gun
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Re: Mazda bounty / ford courier , wheel bearing harmonic?

Postby Trundle » Thu Apr 18, 2013 1:44 pm

Crash bandicoot wrote:are the backing shims on the brake pads???

brake calliper is completely removed for testing still makes it ,
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Re: Mazda bounty / ford courier , wheel bearing harmonic?

Postby Gardengnome » Thu Apr 18, 2013 6:04 pm

[quote= brake calliper is completely removed for testing still makes it ,[/quote]

Keep removing things till it stops :D .

[quote=Im convinced it is front end as you cant feel it through the steering wheel quote]

Do you mean you "can" feel it?

Have you checked the RH Wheel bearing? It may be the RHS due to the wheel unloading allowing vibration movement to happen and then the loading of it suppresses the situation. Vibrations will also transfer through steel items and emerge in wierd places.

Is it still there if in a different gear, same speed and different engine RPM? Reason I ask is maybe its engine related and while turning a LH corner the engine moves on the engine mounts changing the condition which promotes it.

Best of luck.
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Re: Mazda bounty / ford courier , wheel bearing harmonic?

Postby Crash bandicoot » Thu Apr 18, 2013 6:10 pm

Trundle wrote:
Crash bandicoot wrote:are the backing shims on the brake pads???

brake calliper is completely removed for testing still makes it ,


sounds to me that the outer CV housing is rubbing on the main hub that the wishbones and caliper bolt too etc failing that the conclusion would be a heat warped outer axle .......you balanced and checked everything else. short of that get a complete LHF assembly from the wrecker and swap it over.
Waiter...there is a drought in my glass.
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Re: Mazda bounty / ford courier , wheel bearing harmonic?

Postby Heath » Fri Apr 19, 2013 12:03 am

Remove the axles then remove the cvs.


Like they said just keep removing things until it stops.

I hate stuff like this. Sometimes it isnt really an issue but it just anoys you becaus eit is there (I must be OCD - although I dont wash my hands a lot so maybe not :mrgreen: )
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Re: Mazda bounty / ford courier , wheel bearing harmonic?

Postby ladeda » Fri Apr 19, 2013 9:04 pm

what sorta noise? Humming, clunking, wuring, squeeling, bearing noise etc?

If you havn't already, check the R bearing races for same condition as left before you changed it. if the same then prob not bearing, as same temp etc.
Unless :idea: the no sealant is a clue, :idea: has it had FL bearing trouble before?
possibly race not seating properly due to the same rough bloke that didnt use gasket/sealant got a bit heavy with the hamer and punch damaging inside of hub. 2nd hand hub mite be the fix.

Ummmm unlikly I know, shootin in the dark here. maby shock bushes? :roll: :lol:

been ova some bumpy stuff to see if any other noises arise? can help change the way your aproaching the noise, look at it from a completly diferent view point.

also put a fresh set of ears in the other seats, one at a time as you make the noise just to make shur its FL, try window down and up if you haven't already.

Run it up on the hoist yet? or as you already said its only there under load?
Ummmmmm, no I got jack, you win. :lol: Ill ask my man at work on monday, he deals with theese things all the time, we only got like 50 of them :roll:

Don't give up I wana know now :wink:
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Re: Mazda bounty / ford courier , wheel bearing harmonic?

Postby Trundle » Sat Apr 20, 2013 12:30 am

I cant remember if i posted it but the harmonic was in the lhf , had a fucked bearing , didnt fix the problem ,
turned out to be the rhf outer bearing case harening , #### knows how it made the noise when going around rh corners as wheel bearing noises arise when loaded , but anyhow , i also found a LH rear bearing case loose in the housing , and had 3mm end float , although that was not causing the noise!!
Another mechanic friend of mine has remote electric stethascopes that you can clip onto shit which picked up the problem ,
Such a basic vehicle to , bigest head ache ever ,
Cheers for help !
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Re: Mazda bounty / ford courier , wheel bearing harmonic?

Postby Trundle » Sat Apr 20, 2013 10:24 am

Gardengnome wrote:[quote= brake calliper is completely removed for testing still makes it ,


Keep removing things till it stops :D .

[quote=Im convinced it is front end as you cant feel it through the steering wheel quote]

Do you mean you "can" feel it?

Have you checked the RH Wheel bearing? It may be the RHS due to the wheel unloading allowing vibration movement to happen and then the loading of it suppresses the situation. Vibrations will also transfer through steel items and emerge in wierd places.

Is it still there if in a different gear, same speed and different engine RPM? Reason I ask is maybe its engine related and while turning a LH corner the engine moves on the engine mounts changing the condition which promotes it.

Best of luck.[/quote]

This man was right!! :oops:
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