4 wheel drive

[jcwest1]

Does anybody know what torque wind-up is in the drive train? Owners manual says this is caused by driving the truck on hard surfaces in 4wd mode.

[Davescort97]

Welcome to the forum!

A 4 wheel drive vehicle will have at least two differentials (one in each axle for a pair of driven road wheels) and possibly a center differential to divide out torque between the front and rear axles. 4 WD vehicles without a center differential should not be driven on dry paved roads in 4 wheel drive mode, as small differences in rotational speed between the front and rear wheels cause torque to be applied across the transmission. This phenomenon is known as wind up and can cause considerable damge to the transmission or drive train. On loose surfaces these differences are absorbed by the slippage on the road surface.