4x4 not working

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WRJ
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My 1997 light duty f250 transfer case shifts to 4x4 but no power to front wheels. What are the troubleshooting steps?
May 8, 2006 at 11:33 AM
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LOSONE
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Is it mechanical or electronic 4WD?
May 8, 2006 at 6:22 PM
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WRJ
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It is a manual 4 x4 to engage the transfer case. Shift lever on the floor.
May 9, 2006 at 9:24 AM
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PEPPERMRJ
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Your truck uses a vacuum servo on the front axle. If you apply vacuum to the servo will it locks the axles? You can use a piece of vacuum hose and just suck on the end if you don't have access to a vacuum pump.
Good luck and let us know. :)
May 9, 2006 at 9:49 PM
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