Post by
Big-Bird »
https://forums.nicoclub.com/big-bird-u44704.html
Thu Feb 01, 2007 5:59 pm
I found this information from another location but it is still sound information.
When making turns in 4x4 mode, the four wheels each make a different radius track, which means that each wheel is turning at a different speed. The differential in each axle allows for this speed difference between wheels on the same axle. For the speed difference between the front and rear wheels, there must (MUST) be slippage. Either a center differential or fluid coupling, or other gizmo that can allow for this, or a tire must slip on the surface. Because many of our trucks are not all wheel drive with this center device, we must let the wheel slip on a slippery surface...snow, mud, sand, etc.
From the keys of BB
Good traction on wet pavement, even dry hard clay, does not allow for the slippage needed. Which means this can put stress on the the drive train and the usual item that suffers the damage ends up being the front differential or the the HUBS ( if your truck has hubs that is). The Spider gears are the most likely item to break or suffer damage when the transfer case is engaged and the vehicle is turning on dry/good traction surfaces. The driver will notice the vehicle is hard to steer in the turn, needs more power and the tires are chirping (because they are trying to move at different speeds one of the tires starts to skip.
If you don't have the AWD model, usually all you need to do is take the vehicle out of 4WD beforehand which will allow the front and rear wheels to rotate at different speeds while turning into the Mcdonalds or where ever you are going.