Front driveshaft always spin

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Nov 16, 2007 | 12:40 PM

wreedZ71

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More Turbo

Joined: Feb 2006

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From: Cypress, TX

Front driveshaft always spin

Does the front driveshaft always spin even in 4x2?

Nov 16, 2007 | 08:32 PM

mattd17

Fleet Mechanic

Joined: Dec 2004

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From: Ketchikan, AK.

i think it does.... since the way that the 4x4 is engaged is with the hubs.... and not in the transfer case... that would tell me that as long as the truck is moving, the t-case is spinning, therefore driving the front driveshaft and axles..... but they just arent engaged into the hubs until you hit the switch.

Nov 17, 2007 | 12:24 AM

Tylus

MMNC (SS)(Ret)

Joined: Mar 2004

Posts: 11,606

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From: SE Georgia

no

they are stationary until the transfer case is placed in 4x4

the hubs are disengaged in 4x2 as well

the only manufacturer that uses constant motion driveshafts is Dodge/Jeep

Nov 17, 2007 | 12:36 AM

mattd17

Fleet Mechanic

Joined: Dec 2004

Posts: 1,365

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From: Ketchikan, AK.

so then the dash switch serves a dual purpose?? to send an electrical signal to the t-case, and to also control the hubs?

Nov 17, 2007 | 01:10 AM

ford390gashog

Fleet Owner

Joined: Jan 2004

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From: Brentwood,CA

The IWE's lock when the switch is turned to 4x4 the drivshaft then comes up to speed and the t case locks.

Nov 17, 2007 | 07:53 AM

lostin90s

Postmaster

Joined: Jul 2006

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From: Central PA

The drive shat will start to tune on the highway because of drag/moment of axles ETC.
But not much .

Just place a chaulk mark on shaft anf=d take a ride at 65 MPH .

Last edited by lostin90s; Nov 17, 2007 at 07:57 AM.