97 Expy No 4wd
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From: North Carolina
sounds like your transfer case motor is working. Next step is to check your vacuum motor on the front differential. Get under the truck and on the front of the differential there will be a plastic cover just to the left of center(towards the passenger side). check to be sure the lines are connected and then follow up to the firewall and make sure that they aren't cracked anywhere. If they are, reconnect them as necessary and all should work fine. Oh by the way..... sorry for the mix up!
Last edited by the4by4freek; Jan 2, 2004 at 04:56 PM.
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dk...i am not sure exactly what kind of lift it is, i bought it with it on and the guy that had it before me took it to a custom off road shop and had the air ride cut out and the lift installed. but the 285's with lift clear fine but scrub on the front bumper when the wheels are cut all the way. Umm as for stock and 285's, I don't think so...they are a big tire...if they work then my guess is it'll be tight and scrubbing to be expected.
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From: Olympia USA
Originally posted by FarmLaw
NWBronco...
I believe (although I'm not entirely positive) that what Freek meant is that our Expys don't have 'hubs' in the traditional sense of part time 4wd vehicles. There is no switching of power on and off at the hub...the hubs are solidly engaged to the axleshaft splines and the axleshafts always spin. Thus, looking at the 'hubs' would not be a worthwhile experience--there aren't any parts to go bad/seize up/etc. So while you meant selectable hubs (I think--based on what you said in your post), meaning devices incorporated into the hub that engage/disengage to either lock or unlock the rotation of the wheel to the rotation of the axleshaft, Freek meant hubs as in the component of the axle that is between the bearings and the wheel. To put it another way--the Expys act like they have drive flanges instead of hubs at the front wheels.
I believe--but again I'm not sure--that the vacuum lines going to the vicinity of the center differential operate some form of central axle disconnect on the front axle for 2wd operation.
So there should never be a problem with a hub on an Expy--they don't have any moving parts. If you've got a hub problem--well--then you've got serious problems! (I.e. wheels falling off, etc.).
I think the diagnostic tests suggested are pretty right-on, both the 'stop and listen' and the 'stop and turn'. Just replace the "you've got a hub problem" part of Bronc's post with "you've got a vacuum motor problem."
NWBronco...
I believe (although I'm not entirely positive) that what Freek meant is that our Expys don't have 'hubs' in the traditional sense of part time 4wd vehicles. There is no switching of power on and off at the hub...the hubs are solidly engaged to the axleshaft splines and the axleshafts always spin. Thus, looking at the 'hubs' would not be a worthwhile experience--there aren't any parts to go bad/seize up/etc. So while you meant selectable hubs (I think--based on what you said in your post), meaning devices incorporated into the hub that engage/disengage to either lock or unlock the rotation of the wheel to the rotation of the axleshaft, Freek meant hubs as in the component of the axle that is between the bearings and the wheel. To put it another way--the Expys act like they have drive flanges instead of hubs at the front wheels.
I believe--but again I'm not sure--that the vacuum lines going to the vicinity of the center differential operate some form of central axle disconnect on the front axle for 2wd operation.
So there should never be a problem with a hub on an Expy--they don't have any moving parts. If you've got a hub problem--well--then you've got serious problems! (I.e. wheels falling off, etc.).
I think the diagnostic tests suggested are pretty right-on, both the 'stop and listen' and the 'stop and turn'. Just replace the "you've got a hub problem" part of Bronc's post with "you've got a vacuum motor problem."
Heheh, I'm good with all of it. No offense meant and none taken.
I've got a 99 Expy for the missus, and then an 86 Bronco and a '92 Bronco.
Bob K.
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From: North Carolina
Hey bob.... all is good. These newer 4x4's aren't set up like to old ones used to be. They are a little more complex but also sometimes easier to work on. All the newer ford 4x4's are using the same type of setup as far as the front end goes. The Explorer and the Expedition share almost the same identical setup with the exception of the size of the components. I wish these rigs were as easy to diagnose as the older setups are. Many are computer controlled now and that makes it even tougher! Good luck and happy driving!
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Dan-79F350
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