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  #1  
Old 07-18-2010, 03:02 PM
dndacres dndacres is offline
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Default 4wh drive question

Truck works great in 2wd. In 4wd (high and low)works good when driving in a straight line but when i turn it starts to lock up the front wheels the harder i turn the tighter the front wheels lock up.
I have the truck maintained regularly and it runs like a top.
Any Ideas?
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Old 07-18-2010, 03:13 PM
01_ranger_4x4 01_ranger_4x4 is offline
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Default Re: 4wh drive question

4x4 is not meant to be used on dry hard surfaces like asphalt or concrete. if it is you will notice symptoms like you describe. when you turn a corner the rear wheels are turning slower than your front wheels and when you are locked in 4x4 they are not allowed to do so. when that happens on a surface that doesn't allow the wheels to slip you will have a bind in your drivetrain and that what you are feeling when you crank the wheels hard in either direction. only use your 4x4 on dirt, gravel, sand, snow, mud, grass ect. never use it on dry pavement.
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  #3  
Old 07-18-2010, 05:19 PM
mickblock mickblock is offline
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Default Re: 4wh drive question

That's normal and like Patrick said FWD is only meant to be used in slick conditions or loose earth. But it's the two front wheels that are locked together by the drive train when FWD is engaged. The wheel on the outside of the turn has further to travel and needs to rotate faster but its locked in step with the inside wheel. So the two wheels resist each other. Any cars rear wheels would do this too if there were no differential that allowed them to rotate at different speeds.
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Old 07-18-2010, 06:50 PM
West West is offline
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Default Re: 4wh drive question

Quote:
Originally Posted by mickblock View Post
That's normal and like Patrick said FWD is only meant to be used in slick conditions or loose earth. But it's the two front wheels that are locked together by the drive train when FWD is engaged. The wheel on the outside of the turn has further to travel and needs to rotate faster but its locked in step with the inside wheel. So the two wheels resist each other. Any cars rear wheels would do this too if there were no differential that allowed them to rotate at different speeds.
The front wheels are NOT locked together. The front has a differential just like the rear does. You are right about the front wheels traveling at different speeds though. The binding occurs in the transfer case which does not have a differential in it. When you are going in a straight line, all the wheels are going the same speed. When you turn, like 01_Ranger said, the front and rear tires are rotating at different speeds. The transfer case in our Rangers are not full-time, so they do not allow speed differentiating. However, there are some vehicles out there with full-time cases that allow speed differentiating and use on dry pavement.
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Old 07-19-2010, 02:28 PM
dndacres dndacres is offline
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Default Re: 4wh drive question

Thank you.
I have driven this truck for many years and I guess I've never noticed this before so when I did I got a little concerned.
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