ORIGINAL: arapoda
Let me just check I'm getting this right, as this is an expensive mistake if not done correctly...
I need to take the black case off, remove the e-clip, take the bearing off etc, and place the shim so that it is sitting on the gear, then put the bearing back on, and everything else, then the black case, and that's it? How many should I use, as there's three shims in one pack.
I think I've gone cross-eyed! What I just said makes no sense as that would move the gear away from the pinion gear, no?
What you said is correct. Here is a tip....
Take out the E-Clip holding the diff shaft on the gear
then mount the gear to the black diff housing using only 2 screws
Now you can pull out the drive cup and remove the bearing to add shims without having to take apart the entire diff assembley
Install the shims and put the bearing back in place
Then slide the diff shaft back in
Now you can place the diff housing in the gear case and check the gear mesh by holding the final gear (the big gear) and move the pinion gear back and forth.
If you need a refrance to all the parts I talked about click below for the manual.
http://hpiracing.com/graphics/instr/10441/10441.pdf
Sorry I cannot explain this any further I have to get back to work.