Huck's daily - 2005 Z71 crewcab

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TotalyHucked

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I don’t understand the tinted windshield thing. I can barely see at night as is lol. But to each their own.
Glare KILLS me at night, that’s what I mainly want it for. And heat in the summer. It won’t be much, just a super light tint.
 

TotalyHucked

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Made some more progress last night and today. We lost power at work about 4:15 yesterday, so I took that opportunity to throw in the new races and pressed on the carrier bearings before I left at 6.

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Made up some setup bearings from the old ones. Had to run to town to find something to hone out the centers cuz I couldn’t find my Emory cloth to make a hillbilly hone or our brake hone. Grabbed a couple stones for the die grinder

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Old77

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Glare KILLS me at night, that’s what I mainly want it for. And heat in the summer. It won’t be much, just a super light tint.
I prefer a tint on the windshield, too. I usually get 50% on my rigs
 

TotalyHucked

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Threw the pinion and carrier in. Ran into a snag that no matter what shim combo I ran, once I tightened the caps, everything locked down tight

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I suspected the pinion was wayyy too deep, it just looked odd in that race. So I took it out and threw in just the carrier
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It’s mid-spin here, just free spinning nicely
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Yep, pinion was too deep. Oops
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TotalyHucked

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So what I finally found was, the GM bearings were quite a bit bigger than the Koyo’s that came in the kit, so they weren’t going down in the races properly. The rear bearing was 3mm larger diameter and 1mm taller. The forward bearing was 1mm bigger around and 1/2mm taller. No wonder the pinion is too deep

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So took the new bearings and turned them into setup bearings

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Muchhh better

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TotalyHucked

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So finally, I could check backlash and run a pattern. I have the factory .036” shim on the pinion and both factory shims on the sides of the carrier here. Spec is .06-.010, I JUST missed it

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Threw on the gear marking compound and ran my first pattern. I’ve since learned I need to mix it with some gear oil so the pattern will show better, I’ll do that tomorrow
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Not bad for the first pass! I also realized I swapped the carrier bearing caps, so that’ll also get fixed tomorrow. Gonna redo the compound and go from there, might need to make some small adjustments but for my first time, I’m happy with that
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TotalyHucked

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On my lunch break I fixed my carrier bearing (I just flipped the pass side over upside down, the driver's side was ok), made a soupier gear compound and re-ran the pattern. Backlash is still out of spec, .0105 but the pattern isn't bad at all to start with.

It looks like the pinion could be a touch deep, but I also need to take the carrier back out and re-check the pinion drag/rotational torque with my coworker's split beam wrench. The one I bought goes to like 800in lbs and goes by 50in lb increments, so I can't accurately see where I'm at. It should be 14-19in lbs of rotational drag.

Once I do that, I think I'll start by moving the carrier to the pass side about .002-.003" to close up the backlash and that may move the pattern down into the valley a tad more too
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TotalyHucked

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Also realized since the pinion already looks too deep and I'm also probably too tight on it, it's gonna go deeper. So between that and Spencer giving me some greatly appreciated advice, I'm gonna start with the pinion shim and take .005" out to start. Then we'll worry about moving the carrier over
 

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