Huck's daily - 2005 Z71 crewcab

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TotalyHucked

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Location
Auburn, Georgia
First Name
Zach
Truck Year
1985
Truck Model
Sierra 1500
Engine Size
5.3
Got on the front diff after work today. Unfortunately I forgot to take pictures a lot of the time. I managed to get the cir clip off the pass side axle and get it out of the extension housing so I could replace that axle seal.

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Got the new ring gear transferred onto the original carrier

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Threw the pinion in with the setup bearings (they’re the same as the rear axle). Then pressed on the carrier bearings, put the side adjusters in and carrier races in. Dropped the carrier in.

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Then put the case halves back together so I could get a backlash measurement

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TotalyHucked

Full Access Member
Joined
Feb 24, 2020
Posts
3,928
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Location
Auburn, Georgia
First Name
Zach
Truck Year
1985
Truck Model
Sierra 1500
Engine Size
5.3
Got creative with the setup for measuring lol

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That’s a HUGE Chrysler battery out of the boss’ 2021 Durango lol

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Had to take it back apart a couple times. It’s such a ratio change, leaving the side adjusters where they were at disassembly wasn’t even close to right. So I ended up just backing the drivers side all the way out to get the ring gear close to the pinion and then sneak back up on it. With the adjuster from the outside.

First measurement got me at .055-.058-ish. This is a very difficult thing to measure/feel so I was working with ranges. Also had to keep in mind I had to divide by 2, so that put me at .0275-.029.

Adjusted the side adjusters some more and got down to .041-.043. Kept sneaking up on it, basically a tooth at a time on the adjusters

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Finally, got it to .017-.019. Spec is .006-.010. So that puts me right in the meat of the range, .0085-.0095. Score!

All the maths again

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TotalyHucked

Full Access Member
Joined
Feb 24, 2020
Posts
3,928
Reaction score
12,810
Location
Auburn, Georgia
First Name
Zach
Truck Year
1985
Truck Model
Sierra 1500
Engine Size
5.3
So then I threw some paint on and checked the pattern. Unless Spencer or someone sees anything I missed, I’d say that’s good enough for the girls we date. Especially for the front axle that only sees occasional use

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