Thread: Transfer case operation mystery

When the CDL is disengaged it's just a std diff running lengthways down the vehicle rather than across. When locked it's like a series in 4WD.

Thanks for that, does that mean then ,that when both axles have equal contact on the ground ,engaging cdl will not improve traction?

Originally Posted by shack

Thanks for that, does that mean then ,that when both axles have equal contact on the ground ,engaging cdl will not improve traction?

It will prevent the front or rear wheels spinning at differant speeds

to answer your question depends on terrain front in mud rear on hard pack it will improve

Ie
Locked will give 1 for 1 front to back (good traction) 50/50

Unlocked can give 2 for 1 (poor traction) 75/25

Vm

The last of the Classics and P38's had the Borg Warner transfer case with viscous coupling in parallel with the (cogs etc) centre diff. The VC locks up under large speed differance F/R shafts, and hence takes the 'diffing' load off the gears & cogs centre differential.

The BW box has it's own problems and quirks, - differant behavious in both cars....