I'm at 15 in lbs preload, . 005 backlash and here's the pattern. This looks close, but it's been more than 2 decades since I set up gears and I need another set of eyes!
Gear pattern assessment
- Thread starter Irun
- Start date
A lot less paint and a lot more pressure when turning the ring gear. As it sits, it is deep. Try taking out 5 thou and see what happens. Take a pic of the pinion as it sits in the housing. It will have the opposite pattern...i.e. if it looks shallow, then it's deep.
OP
Can't really see a pattern on that. Next time take it straight on looking at it not at an angle. Either way, drop 5 thou and re-run it.
Props to @hosejockey61 for always helping out with these along with @Blackjack too.
Not everyday you get a world renowned youtuber and lip balm enthusiast to help with your install!
Not everyday you get a world renowned youtuber and lip balm enthusiast to help with your install!
Last edited:
I agree with Mike it is a touch deep and try pulling 5 thou of pinion shim. That should open up your backlash a touch as well.
It's still listed on eBay...
https://www.ebay.com/itm/2844331327...d=link&campid=5337789113&toolid=20001&mkevt=1
OP
Revolution gears and it's a HP30. I'm done for the evening, but here's the best shot I can get of the pinion tonight. I'll pull the carrier tomorrow and get something better.
Those pics are fine. Are you using shims behind the race in addition to the slinger? What is your pinion depth at right now?
Looks like you are there. You want to favor the drive side over the coast with a HP30. I know it sounds tedious, but I would experiment 1 or 2 thou shallower and open that backlash up some.
OP
OP
If I'm following correctly, I pulled .005 from the pinion shims. They were at .069 and I went to .064. Maybe a dumb question, but what tool do I use to set the outer pinion bearing? It's the only bearing left that's a setup bearing.
No need to use anything setup on the outer bearing. Drive the race in and use the new bearing.
I just reread this post. What do you mean you pulled from the pinion shims? If you're using the slinger, where are the other shims coming from?
Mike is trying to figure out where the shims you are adjusting located? And no need for a setup bearing on the outer.
OP
The setup I'm using is exactly like the image below. Starting from the inner side:
- Stock inner oil slinger
- Replacement Inner Timken Bearing
- Replacement Inner Timken Race
- Replacement Omix Oil baffle
- Preload shims (set at .0064)
- Replacement Outer Timken Race
- Replacement Outer Timken Bearing
- Stock outer oil slinger
- New Spicer pinion seal
- Stock yoke, using the stock washer and pinion nut (top is ground for repeated installation and removal)
In terms of what I adjusted, I was referring to the pinion preload shims. Those are now at .064. The only shims on the Eaton E Locker carrier side is .010 on the non ring gear bearing side. There are no shims on the ring gear bearing side. Since I'm on the tight side of .005 backlash, I believe I could remove .001 to .002 on the pinion preload shims, which should help put me little better on backlash and pattern. Am I thinking this correctly?
BTW, as @Longwhitejeep said, a huge thanks for taking the time to help out!
Last edited: