Originally Posted by
roger999
how much force should i use to try turn wheel??? because if i was trying hard it was slipping but if not hard it wasn't slipping
that gear seems to be hard to work with it!
Enough force to make it turn or not, but if you really really force too much you will get a little movement still, when you do not hold one wheel, just the spur gear (motor), the wheels should turn freely in opposite direction with no grinding noise.
Have you clean and regrease (black) the thrust race at the same time?
Do not use the term "spool" for a differential gear, a spool is at the front and have no or very little play with no balls but the white pads inside.