Rebuilding 4x4? - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 02-11-2014, 05:40 AM Thread Starter
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Rebuilding 4x4?

Is there a good write up on trouble shooting/rebuilding the vacuum system for the 4x4 on our trucks?

My 4x4 switches fine, but the hubs won't engage/disengage, and I have torn the hubs up manually switching them with pliers.

Where is a good source for the auto hubs? I feel like I could get a set for cheap since most people switch to full manual.

'02 F-250, 4x4, Auto - Totaled
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post #2 of 7 Old 02-11-2014, 06:09 AM
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I'll be watching this post too, hope you don't mind me piggy backing. I just got a 2000 Excursion and the auto lock doesn't work so I've been driving around with them manually locked. I was told it was a vacuum leak but I have no idea how to find it.

Why do you have to use pliers to lock them? That sounds like you have more than a vacuum issue? Or I guess since your talking about replacing the hubs its both a bad hub and a vacuum issue?

Will a vacuum issue lead to bad hubs or can you go indefinitely manually locking hubs and leaving them locked during the winter and then manually unlocking them for the summer?

2000 Ford Excursion 7.3, AIS intake, 4" MBRP exhaust, PHP Hydra Chip, Bilsteins (5100 in front and 4600 in back) and x code front springs to be added when I can find the time to put them in.
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post #3 of 7 Old 02-11-2014, 06:14 AM Thread Starter
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My hubs are just wore out, very very hard to turn by hand so I have to use pliers which have eaten away at the hubs. Whoever owned the truck before me abused it

'02 F-250, 4x4, Auto - Totaled
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post #4 of 7 Old 02-11-2014, 06:45 AM
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Like anything else, the hubs need maintenance.

Take 'em out, take 'em apart, lube 'em up! BEFORE you break them

Welcome to guzzle's 4x4 Autolock Hub Lubrication Maintenance Web Page
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post #5 of 7 Old 02-11-2014, 06:59 AM Thread Starter
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Thanks for the link.

Is this really a fair price to pay for new auto hubs? 99 thru 04 Super Duty F250 F350 F450 F550 Ford Auto Locking Front Hub | eBay

Geez

'02 F-250, 4x4, Auto - Totaled
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post #6 of 7 Old 02-11-2014, 07:01 AM Thread Starter
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What about the rest of the vacuum system?

From reading, it looks like if I have a vacuum leak the system will default to defrost if I have a leak. So if everything in the 4x4 shifts fine and doesn't go to defrost my vacuum lines should be fine?

'02 F-250, 4x4, Auto - Totaled

Last edited by orange150; 02-11-2014 at 07:11 AM.
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post #7 of 7 Old 02-11-2014, 07:54 AM
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Vacuum lines, especially at the Hub where's they're flexed as you turn, are the most likely place for a leak. Just change them there first and see what happens to the heater.

$400.00 would be a lot to spend.... You could buy Warn manual hubs for much less but lose the convenience of the "Auto" feature. I guess it depends on how often you're likely to go In/Out of 4WD and who's driving the truck (might do it for the wife )

If you don't mind jumping out and turning them, the Warns are better made. I Lock mine in for the winter months so anytime I need 4WD they're ready (but I live in CT, in NC you're not as likely to do it as often...)

Maybe you could find them cheaper from an OnLine dealership? Try some Googeling and see before you decide eBay has the best deal.
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