Rear end issues
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Junior User
Joined: Oct 2017
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From: Maryland
Rear end issues
Sorry if I'm duplicating, I posted this in the general super duty forum because I know these rears are applicable to a wide range of model years...
I developed a bad hum, speed sensitive, coming from my rear...I'm preparing for the worst...
What's the conventional wisdom with these? Rebuild? Replace? Whats this kind of job usually cost? I've watched some video's so I know quickly it's beyond what I've got the time and experience to do at home.... its a 3.73 rear with LS though I'm pretty sure that the LS has been all slip since I've owned it.
I developed a bad hum, speed sensitive, coming from my rear...I'm preparing for the worst...
What's the conventional wisdom with these? Rebuild? Replace? Whats this kind of job usually cost? I've watched some video's so I know quickly it's beyond what I've got the time and experience to do at home.... its a 3.73 rear with LS though I'm pretty sure that the LS has been all slip since I've owned it.
Postmaster
Joined: Nov 2015
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From: Colorado Springs
Well, finding a replacement axle and doing a swap is probably the easiest/cheapest, especially since you have a 2wd. Any gear ratio will work if you tow you may want deeper gearing, I regeared and went went with a Truetrac in 4.10’s. Pull the cover, and look for shavings etc then report back. I would pick up a Lubelocker gasket so you don’t Have to deal with the RTV mess. They are reusable and work exceptionally well .
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Junior User
Joined: Oct 2017
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From: Maryland
Well, finding a replacement axle and doing a swap is probably the easiest/cheapest, especially since you have a 2wd. Any gear ratio will work if you tow you may want deeper gearing, I regeared and went went with a Truetrac in 4.10’s. Pull the cover, and look for shavings etc then report back. I would pick up a Lubelocker gasket so you don’t Have to deal with the RTV mess. They are reusable and work exceptionally well .
It’s got a lube locker in it already and just changed the fluid maybe 1k miles ago ... weren’t any abnormal shavings then ...
dont think im interested in going to 4.10’s, I don’t plan to go to excessively taller tires and only tow recreationally which it pulls my 10k TT very well...so I’d rather keep the 3.73’s for fuel economy driving unloaded.
Hows your feeling about the truetrac? What did doing the rebuild with one in it set you back?
Postmaster
Joined: Nov 2015
Posts: 4,807
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From: Colorado Springs
The Truetrac for my D80 was $250 
and the gears, rebuild kit and install was $750. I absolutely love the Truetrac, I can go places now that I wouldn’t have considered …like flat wet grass.
. Seriously, I would do it again in a heartbeat!
and the gears, rebuild kit and install was $750. I absolutely love the Truetrac, I can go places now that I wouldn’t have considered …like flat wet grass.. Seriously, I would do it again in a heartbeat!
Logistics Pro
Joined: Aug 2005
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From: Morgan Hill, CA
Mine was starting to get bad so I had it rebuilt. The pinion gear had started to machine a diagonal set of grooves around the carrier. Total rebuild with all the new parts needed was $2500.
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Junior User
Joined: Oct 2017
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From: Maryland
They quoted me $1800 with a truetrac and $1500 stock rebuild so I guess I should be happy with their numbers.
Or maybe go salvage...idk there’s only so much $$$ to go around...
Or maybe go salvage...idk there’s only so much $$$ to go around...
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Postmaster
Joined: Nov 2015
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From: Colorado Springs
BUT, he’s most likely has a 4x4, 2 sets of gears and labor. $1800 for a Truetrac? Keep shopping around. There’s another thread regarding finding the right one for your 3.73’s and the carrier.
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From: Las Cruces New Mexico
Thats why if you remove the pinion yolk you never ever, ever, ever, want to torque the nut back to spec, ive changed plenty of pinion yolk seals and what works best is to use a 1/2" impact gun, set your air compresor to 150PSI and go at it untill you see your socket move no more, I know theres different brands of impact guns and may vary in torque, but should get you close to where the nut was originally removed.
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Junior User
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From: Maryland
I'm looking at about 1208.32 in parts for the truetrac, yukon gear overhaul kit with timken bearings and races, and new yukon gear ring/pinion, and 4 quarts of gear oil and then 6 hours labor at $100/hr (pretty standard around here)....does that sound about right?
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