Hey guys, regearing a hp30 (from a 91xj, non-disco), using g2 4.56's and install kit.
I've gotten the pattern this far. I had it same heel-toe, but farther out on the teeth, and backlash was good @ .006". All the charts I'm reading say to decrease backlast with this pattern. I tried a few variations of pinion & carrier shim adjustments with no luck, so I tried what the book says (FSM) and decreased backlash.
This pushed the pattern into the teeth a bit more, but still looks like it still needs less backlash (pinion look ok to me), but I"m sitting at .002" backlash which I know isn't acceptable.
I've measured backlast at a few places and its within tolerances, and set the pinion preload to what I read is ok (@ 14in/lb). I'm at a loss here right now, coast side doesn't look horrible, but I wouldn't feel comfortable with the drive side at all.
Don't be too concerned with your pinion preload at this point in time. you need to bring the pinion closer to the ring gear by adding shims under the large pinion bearing race. then get you backlash in spec and run another pattern. first socks, then shoes!
Played around tonight some, pulled the pinion in .020 so specs for first set of pics are:
bl .003 (too tight)
Moved ring away from pinion .015 (rgs shims total: .020)
And then moved it back into the pinion .005 (rgs shims total: .025)
I put a little neverseize on the drive side, heard it helps see the pattern, didn't really make a difference IMO
The last attempt definitely is better than my first post, but still not too good. I read the yukon gear install guide and I think I may be focusing too much on getting the pattern centered heel-toe rather than face-flank. After reading through that (I read the guide on pirate before and it lead me to believe get it centered as possible on the tooth H-t & f-f) I think tomorrow after work I'll push the pinion a bit deeper and give it a few goes and see what happens.
I'll also try to get some better shots (please excuse the ****ty cell pics, only camera I have), I'll see if I can borrow a camera from work tomorrow to use. And as far as the marking compound lol... I'll try to clean it up before I put even more on tomorrow.
Played around some more tonight, I think the last pattern has the pinion too deep. I'm saying that because of the bold line at the flank side of the pattern. Now I have a good idea on what does what, but don't really have a good idea of which pattern is best out of the ones I have here. Can someone give me a pointer in the right direction now of which pattern I should try and fine tune? Thanks!
All patterns below had preload and BL within tolerance/range