F250 4x4 Trouble

[Blue Goose]

Well guys, I was under my 2005 F250 4x4 truck this evening changing the oil. While I was under there I gave the front driveshaft the token spin and all it did was turn about 1/8th of a turn and clunk it stopped. I rocked the front driveshaft back and forth and you could see the front left axle try to turn about the same. I also saw a seal hanging loosely on the front axle. I've checked the ESOF switch and it's in 2WD and the hubs are in auto. What's your opinions about this condition?

BTW Vince, chrome, chrome, chrome is not an answer!!

 

[slmann]

I think your truck is trying to tell you it's time to move on and that the 08 Harley would be better for you.

 

[Brian_B]

Something is locked up. Can you disconnect the switch or pull the fuse on it to test the electrical circuit? I know which wire to cut if mine ever does that. The big brown one under the driver seat that goes to the front shift clutch thing. I don't know the name of it.

 

[Blue Goose]

Scott, don't even go there...........FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4,FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4,FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4,FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4,FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4,FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4,FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4,FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4,FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4,FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4,FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4,FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4, FX4,FX4, FX4, FX4, FX4, 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[blacksnapon]

Theres a seal on the inside of the hubs that keep enough vacuum in there to shift from locked to unlocked. Not only do you need vacuum to lock them, you need vacuum to unlock them. I usually use the evap smoke tester to find the leaks. If you can put a little air pressure to the hubs (not much) on top of the spindle, at the little hose, then use soapy water sprayed everywhere, you might find the leak.

 

[Brian_B]

They still have vacuum hubs? WOW! Rangers and explorers had them one year (maybe 2) and they were dropped. The guys I knew that had them...had nothing but issues with them.

 

[Blue Goose]

Thanks Vince, I was just curious what the probable causes might be. I failed to mention, the truck is still under warranty with 35,143 miles on the clock.......Soooo, it's off to the dealer I go...

 

[bowtiehatr]

diesels use vacuum to lock the hubs and when the vacuum is realeased the hubs unlock. if your left axle is trying to turn, then your left locking hub is stuck. dont let your dealer clean it, it really needs to be replaced espeacially since you are fixing to go out of warranty. cleanning and regreasing is a temp fix.

 

[Blue Goose]

Thanks for the tip bowtiehtr.
I've got one theoretical question, since the front differential is an open differential and only one hub was locked in, shouldn't you still be able to turn the driveshaft spinning the unlocked side?

 

[blacksnapon]

Thanks for the tip bowtiehtr.
I've got one theoretical question, since the front differential is an open differential and only one hub was locked in, shouldn't you still be able to turn the driveshaft spinning the unlocked side?

Uh, spinning the unlocked side wont do anything..........its unlocked!

 

[Blue Goose]

Maybe I didn't phrase my question very well.....Right now I cannot turn the front driveshaft as if both front hubs were locked. If only one hub was locked and I have an open differential, shouldn't I be able to spin the driveshaft with the unlocked axle spinning? ( I think I phrased that correctly )

 

[blacksnapon]

The driveshaft wont spin because the back wheels are on the ground, or both hubs are locked.

 

[bowtiehatr]

goose, when you spin the drive shaft, both axles could turn. since you have the wheels on the ground, the axle gear stops turning on the spider gear because the wheel cannot move. basically, no revolution is happening. sounds like your overthinking the wheel lol.

 

[6L PWR]

sounds like your overthinking the wheel lol.

I thought Goose invented the wheel????

 

[O'Rattlecan]

too much credit... He was scratching his ass while he watched his younger brother think it up.

Ryan

 

[Blue Goose]

too much credit... He was scratching his ass while he watched his younger brother think it up.

Ryan

.....................