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Whining, Screeching Transfer Box or Differentials
- Thread starter stu306
- Start date
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Grit Valve
2000 4.6 Vouge
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- Posts
- 58,170
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- Preston Lancs.
Yeah i see. What's your point?
Grit Valve
2000 4.6 Vouge
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You can not always just stick your head out the window as you put it . In some cases yes if real bad
Never assume always inspect that is my point .
jamesmartin
Well-Known Member
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noise on over run is usually diff pinion bearings ,as crown wheel is driving a little pinion ,wheel bearings a t/boxes etc would normally be worst under load ,wheel bearings when cornering
- Posts
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I believe that was about a pinion bearing. A worn pinion bearing and a wheel bearing have totally different characteristics. Different sound altogether, thought you would have known that. Once you have the general area you can confirm with the stethoscope. You don't stick your head out of the window you have them shut and turn your head to determine the direction the noise is coming from. Easy with practice, you do of course needs lots of experience. If it is indeterminate the scope is the only way.
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Be careful giving info away James some of these people may get to know as much as us and that would never do.
Grit Valve
2000 4.6 Vouge
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Usually is a big open ended word I'm not disputing the fact but unless really worn some times having a listen isn't always the best assumption , inspection is.
Datatek
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Without dismantling, you cannot inspect modern wheel bearings. What do you propose, take them apart one at a time until you find the duff one?
Front wheel bearing failure on the Transit is a fairly common problem, when it gets loud enough it's easy to diagnose if it's left or right
Grit Valve
2000 4.6 Vouge
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Without dismantling, you cannot inspect modern wheel bearings. What do you propose, take them apart one at a time until you find the duff one?
Front wheel bearing failure on the Transit is a fairly common problem, when it gets loud enough it's easy to diagnose if it's left or right
In some cases I'd rather dismantle check than replace on the off chance . Well obviously if it gets that bad then you will know but its better to get to the root of the problem than to late
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How do you inspect a P38 wheel bearing?
Grit Valve
2000 4.6 Vouge
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Personaly I check for play and roughness it the bearings .if they are bad enough you will know before they collapse
Datatek
Well-Known Member
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You obviously work for a garage, lets take it all to bits on spec, customer is payingIn some cases I'd rather dismantle check than replace on the off chance . Well obviously if it gets that bad then you will know but its better to get to the root of the problem than to late
jamesmartin
Well-Known Member
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true but over run is diff pinion ,wheel bearings are worst on cornering as wieght is thrown on one side increasing pressure on those wheel bearings but wont have any effect on pinion bearings , diff carrier bearings would be noisy under load ,i have to get it right fairly quickly no one wants to pay for you to strip diff out ,change t/box ,so you have to start at the most likely ,if you understand how crown wheel and pinion work you can see why over run cause the noise before its buggered enough to be noisy all the time ,you can strip and inspect the wheel bearings but 9 times out of 10 you wouldnt be any wiser and theyd need replacing anyhow then, you can remove front prop or rear to help with diagnosis
Hi
Thanks to everyone who replied, special thanks to wammers, who saved me from gubbing me transfer box by filling with the wrong oil.
So, took the front drive shaft off to check to see if noise was still there, when I did, the plate/shaft the drive shaft connected to had play in all directions. Suspected bearing was totally gone. It was simpler than that. Tightened up the Bolt in the centre. No play.
Took for a drive with the drive shaft out….no noise
Popped the drive shaft back in……and no noise.
Thanks again.
Thanks to everyone who replied, special thanks to wammers, who saved me from gubbing me transfer box by filling with the wrong oil.
So, took the front drive shaft off to check to see if noise was still there, when I did, the plate/shaft the drive shaft connected to had play in all directions. Suspected bearing was totally gone. It was simpler than that. Tightened up the Bolt in the centre. No play.
Took for a drive with the drive shaft out….no noise
Popped the drive shaft back in……and no noise.
Thanks again.
