Mazda bounty / ford courier , wheel bearing harmonic?


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 Post subject: Mazda bounty / ford courier , wheel bearing harmonic?
PostPosted: Tue Apr 16, 2013 3:18 am 
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Hard Yaka


 

Joined: Thu May 19, 2011 4:14 am
Posts: 366
Location: Taranaki
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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 Post subject: Re: Mazda bounty / ford courier , wheel bearing harmonic?
PostPosted: Tue Apr 16, 2013 3:22 am 
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Hard Yaka
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Joined: Mon Mar 03, 2003 7:00 pm
Posts: 2205
Location: Nelson
What is the tyre wear like? Is there any scalloping in the tread?


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 Post subject: Re: Mazda bounty / ford courier , wheel bearing harmonic?
PostPosted: Tue Apr 16, 2013 3:30 am 
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Hard Yaka


 

Joined: Thu May 19, 2011 4:14 am
Posts: 366
Location: Taranaki
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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 Post subject: Re: Mazda bounty / ford courier , wheel bearing harmonic?
PostPosted: Tue Apr 16, 2013 5:16 am 
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Hard Yaka
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Joined: Thu Dec 30, 2010 2:19 am
Posts: 1265
Location: Levin
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?


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 Post subject: Re: Mazda bounty / ford courier , wheel bearing harmonic?
PostPosted: Wed Apr 17, 2013 2:47 am 
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Hard Yaka


 

Joined: Thu May 19, 2011 4:14 am
Posts: 366
Location: Taranaki
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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 Post subject: Re: Mazda bounty / ford courier , wheel bearing harmonic?
PostPosted: Wed Apr 17, 2013 2:47 am 
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Hard Yaka


 

Joined: Thu May 19, 2011 4:14 am
Posts: 366
Location: Taranaki
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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 Post subject: Re: Mazda bounty / ford courier , wheel bearing harmonic?
PostPosted: Wed Apr 17, 2013 3:04 am 
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Hard Yaka

Joined: Wed Jan 04, 2012 4:59 am
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Location: East coast bays
wishbone bushes worn?


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 Post subject: Re: Mazda bounty / ford courier , wheel bearing harmonic?
PostPosted: Wed Apr 17, 2013 3:10 am 
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Hard Yaka

Joined: Wed Jan 04, 2012 4:59 am
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Location: East coast bays
left hub hotter than the right after a good drive?


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 Post subject: Re: Mazda bounty / ford courier , wheel bearing harmonic?
PostPosted: Wed Apr 17, 2013 3:51 am 
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Hard Yaka
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Location: Levin
are the backing shims on the brake pads???


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 Post subject: Re: Mazda bounty / ford courier , wheel bearing harmonic?
PostPosted: Wed Apr 17, 2013 3:01 pm 
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Hard Yaka
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Joined: Tue Sep 13, 2005 7:00 pm
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Location: Queenstown
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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 Post subject: Re: Mazda bounty / ford courier , wheel bearing harmonic?
PostPosted: Wed Apr 17, 2013 7:42 pm 
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Hard Yaka


 

Joined: Thu May 19, 2011 4:14 am
Posts: 366
Location: Taranaki
ladeda wrote:
wishbone bushes worn?


all ball joit a arm bushes all mint ,


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 Post subject: Re: Mazda bounty / ford courier , wheel bearing harmonic?
PostPosted: Wed Apr 17, 2013 7:43 pm 
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Hard Yaka


 

Joined: Thu May 19, 2011 4:14 am
Posts: 366
Location: Taranaki
ladeda wrote:
left hub hotter than the right after a good drive?

Hubs are same temp with infared gun


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 Post subject: Re: Mazda bounty / ford courier , wheel bearing harmonic?
PostPosted: Wed Apr 17, 2013 7:44 pm 
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Hard Yaka


 

Joined: Thu May 19, 2011 4:14 am
Posts: 366
Location: Taranaki
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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 Post subject: Re: Mazda bounty / ford courier , wheel bearing harmonic?
PostPosted: Thu Apr 18, 2013 12:04 am 
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Truck Hore

Joined: Mon Jul 16, 2012 5:26 pm
Posts: 42
Location: Christchurch
[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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 Post subject: Re: Mazda bounty / ford courier , wheel bearing harmonic?
PostPosted: Thu Apr 18, 2013 12:10 am 
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Hard Yaka
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Joined: Thu Dec 30, 2010 2:19 am
Posts: 1265
Location: Levin
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.


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