ZF6 Manual Transmission 4x4 F250 Power Stroke
I'm hoping I can get an answer to the question of backing my 12,000 LB 5th wheel with my 4x4 F250 manual shift. What happens, if I'm backing on an incline into a RV site slowly, I get all kinds of noi...
Forum Discussion
Did your truck do this before the clutch work? It sounds like it may be "axle wrap", where the rear leaf springs twist around due to the torque loads on the driveline. You used to see what we called "traction bars" on the old muscle cars for this very reason. Especially with a new or stiff clutch, there's not a lot of slip in the driveline to take up the uneven torque, so the springs twist and cause the truck to hop, jar, and rattle. Auto transmissions tend not to do this as bad since they are operated by moving fluid instead of a direct mechanical link with little "give". This is especially noticeable when the truck is in a gear that is too high or when the load is heavy. Here is a short video to explain it better than I can:
Axle Wrap
Like Ductape suggested, shifting the transfer case into low range really helps, since the Z6 is geared a little high in reverse, in my opinion. Just be careful not to "romp" the pedal unless the hubs are locked in though, as low range really puts a LOT of torque on the rear driveshaft and differential if the front isn't engaged to share the load.
Hope this helps!
Regan
Axle Wrap
Like Ductape suggested, shifting the transfer case into low range really helps, since the Z6 is geared a little high in reverse, in my opinion. Just be careful not to "romp" the pedal unless the hubs are locked in though, as low range really puts a LOT of torque on the rear driveshaft and differential if the front isn't engaged to share the load.
Hope this helps!
Regan
