P.A.S.S ----- Gear X Crown and Pinion TRD Ratio 4.89 / 5.375

[mc68]

Ok, two problems: First we tried putting a shim between the pinion and main bearing (like the workshop manual states) first was a 98 thou, then a 90, then eventually no shim at all. Basically we cant get the pinion into the housing enough to pull it away from the crown wheel. the contact on the Toe of the leading edge is extreme.
To get it to work without a shim under the bearing, naturally the splines for the flange move up, so to stop the nut bottoming out, a washer had to be put between the nut and the flange at the end of the pinion. This is when I found it abit suspect.

So, the second problem is once we get the backlash to this level (which is pretty good actually) the crown wheel tooth depth is bottoming out on the front edge of the pinion...causing it to occasionally bind up. (flank contact) This is still with the tooth contact -way- on the Toe of the crown wheel.
Pulling the Crown wheel away from the pinion with the side carrier bearings frees up this binding. But the tooth contact gets worse and then the backlash also becomes very loose.


I would like to just check if you had issues with setting the pinion height with no shim.