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Open Roads Forum  >  Tow Vehicles  > My F250 SD, - 4 Wheeel drive, front drive turning when off. Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  |  Oldest first Newest first  MR MAC • View posts BOSTON MA Senior Member Joined: 07/07/2004 View Profile Offline Posted: 09/01/09 04:48pm Link  |  Quote  |  Print  |  Notify Moderator Drive shaft and axels on front keep turning when off. Nobs are set to "AUTO" Jacked up front and can spin wheels everything turns. Its not lockrd in at transfer case, think its run by vacuum. Has verry little vacuum at hose when I pull it off. ---??? "HELP" - THANKS. ROBERT L MC INTYRE reno82 • View posts Cardiff by the Sea, CA Senior Member Joined: 04/01/2008 View Profile Offline Posted: 09/01/09 04:58pm Link  |  Quote  |  Print  |  Notify Moderator If it's vacuum, you probably have a leak. Check the line looking for cracks, my old jeep had vacuum with plastic lines,kept getting leaks at the line elbows which were rubber. Easy and cheap fix when you find it. dgreen1069 • View posts Bristow, VA Senior Member Joined: 08/14/2002 View Profile Offline Posted: 09/01/09 08:02pm Link  |  Quote  |  Print  |  Notify Moderator The vacuum hubs are actuated like a retractable pen.....the vacuum clicks them on when you shift into 4wd, then clicks them off when you shift back to 2wd. Does your AC blow out of the vents correctly? The reason I ask is because the vents work off the same vacuum as the 4wd. If you can turn the 4wd switch without your AC vents reverting to defrost, you probably do not have a leak. Have you made sure both of your hubs are set to auto? The hubs are 2 position....lock or auto. If they are set to lock, the front differential would be spinning which would cause the front drive shaft to also spin. 2003 Excursion Limited 6.0 PSD/5sp Torqshift/3.73 Limited Slip 2003 Potomac 30 EBS Hensley Arrow RollingRockTX • View posts Keller, Texas Senior Member Joined: 08/04/2006 View Profile Posted: 09/01/09 08:25pm Link  |  Quote  |  Print  |  Notify Moderator What about backing up in a staright line for about 40 ft? I've seen a few Fx4's get caught like that from time to time. Dunno... 2006 Ford F250 King Ranch PSD 2008 Ford Expedition, HD Tow Package 2008 Jayco Eagle Super Light 31.5BHDS, KC5PFG, 5th Airborne with SideWinder, Plugitright Stabilizers. Ductape • View posts On the Road Senior Member Joined: 11/15/2005 View Profile Offline Posted: 09/01/09 09:19pm Link  |  Quote  |  Print  |  Notify Moderator Vacuum operated Ford hubs are a well known maintenance item. Probably need to have the vacuum lines and controls checked and maybe dissassemble and clean hubs. Jeep GC Nissan Pathfinder F-250 PSD Polaris Ranger 800 Surveyor SV-234, powered by twin Honda 2k. MR MAC • View posts BOSTON MA Senior Member Joined: 07/07/2004 View Profile Offline Posted: 09/01/09 09:53pm Link  |  Quote  |  Print  |  Notify Moderator I tried backing, and drove all the way back from CA, using the ac. without any prob. How hard is it to dissassemble hubs? Is it possable to pull them off with a vacuum pump? dgreen1069 • View posts Bristow, VA Senior Member Joined: 08/14/2002 View Profile Offline Posted: 09/01/09 10:15pm Link  |  Quote  |  Print  |  Notify Moderator The hubs come off very easily. Once you have the wheel off, there is a single snap ring that holds the hub on. Sometimes you have to coax the hub off with a rubber mallet. Here is a link that might help: Hub removal and servicing MR MAC • View posts BOSTON MA Senior Member Joined: 07/07/2004 View Profile Offline Posted: 09/01/09 11:01pm Link  |  Quote  |  Print  |  Notify Moderator Thanks all, Dave thanks for the link, I might get the help of my brother (name is Dave) truck mech. for Boston Ed. TankerDude • View posts West of Middle Earth Senior Member Joined: 01/05/2007 View Profile Posted: 09/02/09 07:04am Link  |  Quote  |  Print  |  Notify Moderator You might also review the owners manual on engaging and disengaging the front axle. If you had it switched into 4-low, I believe the disengage procedure is slightly different from the 4-hi procedure. It doesn't matter to me that you don't own a Mac. It should matter to YOU that you're still tethered to Microsoft. 2004 Ford F350 PSD 6L 4x4 Crew Cab. 2007 Jayco Eagle 322 FKS. Camping with DW Terry, Bobi-Sue and Billy-Joe, Westhighland White Terriers Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  |  Oldest first Newest first  Open Roads Forum  >  Tow Vehicles  > My F250 SD, - 4 Wheeel drive, front drive turning when off.

Search:   Advanced Search Search only in Tow Vehicles

Jump to Forum Recreational Vehicles  - Class A Motorhomes  - Class B - Camping Van Conversi...  - Class C Motorhomes  - Fifth-Wheels  - Folding Trailers  - Hybrid Travel Trailers  - Travel Trailers  - Truck Campers  - Toy Haulers Camping  - Tent Camping  - Family Camping  - Workamping Forum General Forums  - Beginning RVing  - Rallies, Shows and Gatherings  - General RVing Issues  - RV Lifestyle  - Full-time RVing  - Camp Cooks and Connoisseurs  - RVing with Disabilities and Ge...  - RV Pet Stop Technical Resources  - Towing  - Tow Vehicles  - Dinghy Towing  - Technology Corner  - Forum Technical Support  - Tech Issues Locations  - RV Parks, National Parks, Stat...  - Roads and Routes  - Public Lands, Boondocking and ...  - RVing in Canada and Alaska  - RVing in Mexico and South Amer...  - Snowbirds Other Discussions  - Around the Campfire

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