4x4 doesn't work all the time.
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4x4 doesn't work all the time.
I have a 02' f350 sd diesel drw cc.The 4x4 doesn't always work.The front axle does engage every time .The 4x4 light comes on,the four wheel drive works then after driving a little bit it will sometimes quit working.The 4x4 light is still on,the front axle still is engaged but the transfer case stops turning.It will also stop in 4x4 low.I think the clutches in the transfer case are bad.What do you think?
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From: NE Texas
Is it manual or ESOF?
How do you know the xfer case isn't engaged? Did it actually not engage the front driveline?
What do you mean "It will also stop in 4x4 low"? Does it lockdown?
If it is ESOF, and the light is still on, your servo motor may be bad, or loose.
How do you know the xfer case isn't engaged? Did it actually not engage the front driveline?
What do you mean "It will also stop in 4x4 low"? Does it lockdown?
If it is ESOF, and the light is still on, your servo motor may be bad, or loose.
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Originally Posted by Big Orn
Is it manual or ESOF?
How do you know the xfer case isn't engaged? Did it actually not engage the front driveline?
What do you mean "It will also stop in 4x4 low"? Does it lockdown?
If it is ESOF, and the light is still on, your servo motor may be bad, or loose.
How do you know the xfer case isn't engaged? Did it actually not engage the front driveline?
What do you mean "It will also stop in 4x4 low"? Does it lockdown?
If it is ESOF, and the light is still on, your servo motor may be bad, or loose.
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Originally Posted by swann79
Ain't no clutches in these transfer cases... that's only for full-time 4wd.
Post Fiend
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From: NE Texas
Look at your servo motor again, make sure it's fastened tightly to the xfer case. If it is then maybe the adapter inside has slipped of its mating surface.
These xfer cases are chain driven. Do you hear the chain dragging? Any noise at all?
These xfer cases are chain driven. Do you hear the chain dragging? Any noise at all?
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Originally Posted by Big Orn
Look at your servo motor again, make sure it's fastened tightly to the xfer case. If it is then maybe the adapter inside has slipped of its mating surface.
These xfer cases are chain driven. Do you hear the chain dragging? Any noise at all?
These xfer cases are chain driven. Do you hear the chain dragging? Any noise at all?
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Post Fiend
Joined: Jun 2003
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From: NE Texas
No, there are no clutches.
Yes, it's possible for your servo motor to run and not activate the shaft. Not common, but possible. It's also possible that the housing is busted and allowing the shaft to back out of the mating surface. You can't see that part unless you remove the motor, which is not hard to do.
I can't recall things like I once did, but the xfer case you have should be an NP273...chain drive.
Yes, it's possible for your servo motor to run and not activate the shaft. Not common, but possible. It's also possible that the housing is busted and allowing the shaft to back out of the mating surface. You can't see that part unless you remove the motor, which is not hard to do.
I can't recall things like I once did, but the xfer case you have should be an NP273...chain drive.
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From: Kemmerer, Wyoming
Originally Posted by Big Orn
I can't recall things like I once did, but the xfer case you have should be an NP273...chain drive.
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From: Kemmerer, Wyoming
http://tbtrans.com/transfer_case.htm
This site has a parts diagram and parts list for the NP273... this is what your truck has, it is clearly a chain drive T-case, no clutches.
The Super Duty trucks always have and still use the NP273 for ESOF, NP271 for manual 4X4. The T-cases are identical, excepting the electronic 4X4 solenoid on the 273.
This site has a parts diagram and parts list for the NP273... this is what your truck has, it is clearly a chain drive T-case, no clutches.
The Super Duty trucks always have and still use the NP273 for ESOF, NP271 for manual 4X4. The T-cases are identical, excepting the electronic 4X4 solenoid on the 273.
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Originally Posted by swann79
http://tbtrans.com/transfer_case.htm
This site has a parts diagram and parts list for the NP273... this is what your truck has, it is clearly a chain drive T-case, no clutches.
The Super Duty trucks always have and still use the NP273 for ESOF, NP271 for manual 4X4. The T-cases are identical, excepting the electronic 4X4 solenoid on the 273.
This site has a parts diagram and parts list for the NP273... this is what your truck has, it is clearly a chain drive T-case, no clutches.
The Super Duty trucks always have and still use the NP273 for ESOF, NP271 for manual 4X4. The T-cases are identical, excepting the electronic 4X4 solenoid on the 273.
Post Fiend
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From: NE Texas
Did you have time to remove that servo motor, bigdawg?
Once it's off, you can manually shift the xfer case into gear and check it that way. Just make sure you index it back before re-installing the motor.
BTW - some manuals have New Venture, some have New Process - same thing.
Once it's off, you can manually shift the xfer case into gear and check it that way. Just make sure you index it back before re-installing the motor.
BTW - some manuals have New Venture, some have New Process - same thing.
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Originally Posted by Big Orn
Did you have time to remove that servo motor, bigdawg?
Once it's off, you can manually shift the xfer case into gear and check it that way. Just make sure you index it back before re-installing the motor.
BTW - some manuals have New Venture, some have New Process - same thing.
Once it's off, you can manually shift the xfer case into gear and check it that way. Just make sure you index it back before re-installing the motor.
BTW - some manuals have New Venture, some have New Process - same thing.
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From: Stephensville WI
Originally Posted by swann79
The T-cases are identical, excepting the electronic 4X4 solenoid on the 273.