AO Silver Member
Join Date: Aug 2004
Location: United Kingdom
Re: 4 wheel drive know how help please.
Remember there are 2 couplings -
1. The electromagnetic coupling, which is engaged all the time except under "heavy"* braking.
2. The Viscous coupling, which is neither engaged nor disengaged, but tranfers torque rearwards as the fronts loose grip by the thickening of the fluid within it, in much the same way as a torque converter on an auto box.
* The brochure says it disconnects to avoid wheel lock up under heavy braking, though I think it dosconnects with braking far from heavy!