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Diff, Gearbox or wheel Bearings? Which one whining? 

 

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 Post subject: Diff, Gearbox or wheel Bearings? Which one whining?
Posted: Wed Sep 08, 2010 12:10 pm 
Stock as a Rock
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My manual XR8 ute has a bit of a whine. Not sure if its diff or box. When driving the slightest touch and i mean very light touch of acel pedal changes the whine noise to a higher pitch.

Changed the Oil in Diff and Biox but no differnce.

Any ideas??


Cheers

Last edited by ro88bo on Wed Sep 08, 2010 2:39 pm, edited 1 time in total.

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 Post subject: Re: Diff, Gearbox or wheel Bearings?
Posted: Wed Sep 08, 2010 12:13 pm 
Getting Side Ways
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Well. Are you sure its comming from the outside. Its not interferance in your sterio is it?
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 Post subject: Re: Diff, Gearbox or wheel Bearings?
Posted: Wed Sep 08, 2010 1:39 pm 
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Yeah its drivetrain.
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 Post subject: Re: Diff, Gearbox or wheel Bearings? Which one whining?
Posted: Thu Sep 09, 2010 10:00 pm 
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G'Day mate. Does the wine stop when you shift to 4th gear??
If so it may be a cluster gear issue?
If not, where does the sound come from? Front or rear
Cheers Stu
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 Post subject: Re: Diff, Gearbox or wheel Bearings? Which one whining?
Posted: Fri Sep 10, 2010 5:44 pm 
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No its there in all gears. As soon as drivetrain has the slightest load the sounds changes pitch. sometimes i think its diff and then i change my mind to gearbox!
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 Post subject: Re: Diff, Gearbox or wheel Bearings? Which one whining?
Posted: Sat Sep 11, 2010 2:40 pm 
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Could be pinion bearing. I've thought it was rear wheel bearings, front wheel bearings, ended up being pinion bearing.

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Mr220kw
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 Post subject: Re: Diff, Gearbox or wheel Bearings? Which one whining?
Posted: Sat Sep 11, 2010 3:04 pm 
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If the sound changes when you are using the clutch, it could be the thrust bearing is on it's way out.

 

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 Post subject: Re: Diff, Gearbox or wheel Bearings? Which one whining?
Posted: Sat Sep 11, 2010 3:28 pm 
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i have the same noise and i think its diff not box. but idk. im gona be putting a locka in the diff soon and if it dosent shut up then i know its the box.

 

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 Post subject: Re: Diff, Gearbox or wheel Bearings? Which one whining?
Posted: Sat Sep 11, 2010 4:02 pm 
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Esteven8 wrote:
If the sound changes when you are using the clutch, it could be the thrust bearing is on it's way out.



Not clutch pedal. Say if i was doin 80kph with no throttle, and then put foot on acel just enough to take slack out of drivetrain. Then noise changes.
Will take to a diff shop

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 Post subject: Re: Diff, Gearbox or wheel Bearings? Which one whining?
Posted: Thu Nov 04, 2010 10:29 am 
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i have same issue in nc series 2 auto but only in top gear wen in third no noise any ideas
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 Post subject: Re: Diff, Gearbox or wheel Bearings? Which one whining?
Posted: Thu Nov 04, 2010 11:27 am 
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Change your rear wheel bearings first. it got rid of some of the grinding metallic noise but it's not as bad as before. good thing the diff guy was up front with his prognosis and suggested to change the more excisable parts first to isolate where the problem is. he reckons it might be just a pinion bearing thats playing up in the diff.

 

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 Post subject: Re: Diff, Gearbox or wheel Bearings? Which one whining?
Posted: Thu Nov 04, 2010 12:18 pm 
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Yep, it's the BA11 xr6 ute. even though the wheel bearings are changed there is still a slight whine when you load the driveline. remove your foot from the pedal and it's gone, tap the pedal again and the very low pitch whine is instance.

 

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 Post subject: Re: Diff, Gearbox or wheel Bearings? Which one whining?
Posted: Fri Nov 05, 2010 7:54 pm 
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hi all
what is the average cost to get your pinion bearing replaced or fixed!
is it sort of a simple fix or is it a long exspensive task. $$
ball park figure would be nice as i think mine is f**k aswell!
only happens in 1st gear up to 40klph then i cant hear it,
pete.
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 Post subject: Re: Diff, Gearbox or wheel Bearings? Which one whining?
Posted: Sat Nov 06, 2010 9:48 am 
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I got a couple of quotes and the highest is $1300-$1500 with the works.

the other is just new bearings, what nots and shims to make her nice and tight if pinions are ok. $750-$900 depending on what needs replacing apart from the pinion gears.

 

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 Post subject: Re: Diff, Gearbox or wheel Bearings? Which one whining?
Posted: Sat Nov 06, 2010 9:58 am 
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Slick wrote:
I got a couple of quotes and the highest is $1300-$1500 with the works.

the other is just new bearings, what nots and shims to make her nice and tight if pinions are ok. $750-$900 depending on what needs replacing apart from the pinion gears.


Sounds like pretty standard rebuild prices. Both Craft and Diff dynamics in Sydney are in that price range for an overhaul service providing there is nothing major going on.

 

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