Can someone verify a deep noise in your H3

[ASJ]

Could anyone verify if this is normal in your
H3? If you switch over your gear to
4Hi Lock and drive around. When you make
left or right turns all the way, you will
hear low moaning sound (almost like scraping
sound) from your tires, axles. Is this
normal???

[ASJ]

Could anyone verify if this is normal in your
H3? If you switch over your gear to
4Hi Lock and drive around. When you make
left or right turns all the way, you will
hear low moaning sound (almost like scraping
sound) from your tires, axles. Is this
normal???

[timgco]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by ASJ:
Could anyone verify if this is normal in your
H3? If you switch over your gear to
4Hi Lock and drive around. When you make
left or right turns all the way, you will
hear low moaning sound (almost like scraping
sound) from your tires, axles. Is this
normal??? </div></BLOCKQUOTE>

That's just the tree hugger you ran over. No worries. BTW- no problem here.

[DWPC]

"4Hi Lock" locks the F&R differentials. When locked, both axles have to turn at the same rate even though steering and minor road variations mean the axles are going slightly different distances. So they fight each other. The result is called 4WD wind-up.

Your noise is due to torque stored in the driveline causing tire scuffing and binding between the front and rear differentials. You may get a loud clunk or bang too. If the tires didn't scuff, you could eventually build up enough torque to break something expensive.
You shouldn't use either the 4 Hi or 4 Lo "lock" settings on dry pavement. It can cause things that are a lot more unpleasant than your noise.

[ASJ]

Do I go to the dealer to have it checked
up then since I did hear some scuffing?
Or is this normal?

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by DWPC:
"4Hi Lock" locks the F&R differentials. When locked, both axles have to turn at the same rate even though steering and minor road variations mean the axles are going slightly different distances. So they fight each other. The result is called 4WD wind-up.

Your noise is due to torque stored in the driveline causing tire scuffing and binding between the front and rear differentials. You may get a loud clunk or bang too. If the tires didn't scuff, you could eventually build up enough torque to break something expensive.
You shouldn't use either the 4 Hi or 4 Lo "lock" settings on dry pavement. It can cause things that are a lot more unpleasant than your noise. </div></BLOCKQUOTE>

[tacocat]

4Hi (part-time, or 4Hi Lock) "Locks" up the differential. In normal 4Hi full-time mode, the front wheels and rear wheels are able to turn at different speeds. IN locked mode, the front and rear wheels must turn at the same speed.

Differentials are designed to allow two wheels to turn at different speeds without binding. When your differential or transfer case are locked, you are not allowing your wheels to turn independent of each other.

What you are hearing is drivetrain binding and the tires breaking traction on pavement.

Your vehicle is operating perfectly. DO NOT turn on 4Hi Lock or 4Lo Lock on pavement. These functions are only to be used in cases where the terrain allows tire slippage, such as deep mud. Your drivetrain will have less binding issuses in those cases.

BTW, that is why you see drivetrain breakage on many rock crawling trails. Wheelers need to be locked for maximum traction, but the rocks provide excellent traction. Often times, the breakage is directly or indirectly related to drivetrain bind.

[oneworld]

4Hi lock now in 3 on auto trans > no noise no problem > some where in NJ http://www.elcova.com/infopop/emoticons/icon_biggrin.gif http://www.elcova.com/infopop/emoticons/icon_cool.gif

[DWPC]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by ASJ:
Do I go to the dealer to have it checked
up then since I did hear some scuffing?
Or is this normal?

</div></BLOCKQUOTE>

I'd say that, unless you put your foot in it while in "lock", the consequences are limited to some premature wear on the differential gears. They're (hopefully) designed to take some abuse. I wouldn't worry unless you experience gear noise, whining, or clunking in "4 Hi Open". Just resist the temptation to push the lock buttons unless you're on bad footing, and then use power carefully.