front axle questions
Elder User
Joined: Dec 2007
Posts: 680
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From: Michigan
Yup, I believe that's the way our IWE's work. When you shift into 4x4, the hubs lock and supply torque to the wheels. But in either case, the T-case is applying torque to the axles, just not the wheel ends in 4x2. It's actually the t-case spinning the axles. The t-case is attached to the output shaft of the tranny, so it's always spinning. There's friction in the clutches so it's going to turn the front driveshaft as well.
Senior User
Joined: Aug 2007
Posts: 161
Likes: 1
From: Saskatoon,sk
truck needs to be running also for the hubs to unlock, its the vaccum from the engine that unlocks them, so turning the drive shaft by hand will turn cv shafts, but should not turn wheels, with the engine running, or vaccum applied to the hubs
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Junior User
Joined: Jul 2007
Posts: 67
Likes: 0
From: BOSTON MA
I should rephrase my question. right now my truck is in 2wd has been for a while and the front hubs are locked and spinning the axles and driveshaft. I know the transfer case is unlocked because if jack up one wheel the front driveshaft spins. So I think the question should be. should the hubs unlock in 2wd so the axles and driveshaft free spin.
I hope this is a little more clear. Thanks jASON
I hope this is a little more clear. Thanks jASON
Elder User
Joined: Dec 2006
Posts: 662
Likes: 2
From: CO
Is your engine running when you did that test? As was alluded to previously, if the truck is in 2wd and the engine is running, the hubs should be free. If the truck is in 2wd and the engine is off, the hubs should be locked.
Laughing Gas
Joined: Mar 2000
Posts: 1,191
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From: USA
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