Hubs engage on their own? - Page 6 - Ford Powerstroke Diesel Forum
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post #51 of 56 Old 10-08-2018, 12:32 PM
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Originally Posted by Red Ford View Post
So just as a quick check say in a parking lot where I don't have a jack, I could go under the truck and if the front hubs are not locked then the front driveshaft should spin, but if they are locked (even though the dash is in 2wd) it should not spin, correct?
I never tried that. But I think it might be hard to turn those shafts by hand. The idea is to turn the wheel when it's off the ground and see if the shaft rotates with it. If you lock the hubs, even though the dash switch is still in 2WD. You engaged the shafts so the shafts would still turn, but technically it's still disconnected at the transfer case so it would still be 2WD


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post #52 of 56 Old 10-08-2018, 05:42 PM
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Originally Posted by SparkyF250 View Post
Why do that? You'll be dragging the front axle all the time. The only way I'd do that is if I was in a 4wd situation and my ESOF was leaking (like mine does)
I have had my truck nearly 5 years put around 55K on it, and hand calculated my MPG on every fill up. I have tested it many times and I have came to the conclusion that having the hubs locked makes absolutely no difference in fuel mileage. Also Jeeps and Dodges have full-time hubs so the front axle is always spinning and they last just as long as ours do. Leaving the hubs unlocked for long periods of time can cause the u-joints to seize up. However one advantage of locking hubs is if you ever break something in the front driveline you can unlock the hubs and still drive it.

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post #53 of 56 Old 10-08-2018, 05:47 PM
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Quote:
Originally Posted by Red Ford View Post
So just as a quick check say in a parking lot where I don't have a jack, I could go under the truck and if the front hubs are not locked then the front driveshaft should spin, but if they are locked (even though the dash is in 2wd) it should not spin, correct?
That is correct, but if only one hub is locked you can still spin the front driveshaft, so when you do that look at the font axles on both sides to see if both of them are spinning. If only one is spinning lock the hub on that one, and see if the other one spins when you turn the driveshaft.

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post #54 of 56 Old 10-09-2018, 05:38 PM
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Quote:
Originally Posted by 00t444e View Post
I have had my truck nearly 5 years put around 55K on it, and hand calculated my MPG on every fill up. I have tested it many times and I have came to the conclusion that having the hubs locked makes absolutely no difference in fuel mileage. Also Jeeps and Dodges have full-time hubs so the front axle is always spinning and they last just as long as ours do. Leaving the hubs unlocked for long periods of time can cause the u-joints to seize up. However one advantage of locking hubs is if you ever break something in the front driveline you can unlock the hubs and still drive it.
I and the accepted laws of physics disagree with you. LOL But we've had that argument before, so let's just drink on it.
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post #55 of 56 Old 10-10-2018, 03:57 PM Thread Starter
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Well would you imagine that....2 days go by, a little over 300 miles and my hubs are still unlocked! Not the biggest fan of this look, however it seems like it's working.

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post #56 of 56 Old 10-10-2018, 04:37 PM
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