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2500HD 4.10 rear axle seal leaking

Can anyone provide a step-by-step for rear seal replacement?

2500HD 4.10 rear axle seal leaking

Postby bbrown [OP] » Feb 01 2012, 3:55am

My 2001 factory locker diff. is leaking oil on both sides. HAs anyone replaced these? The Haynes manual really sucks regarding the HD rear axles... not even discussed. I know mine is a 4.10 locker with the 14 bolt diff. cover. Isn't it the full-floating axle? How do you get to the seals? My emergency brake pads are soaked with oil now....can I clean 'em or will I have to replace them? :?:
K&N/Custom Intake, Banks Headers & Tuner, Dual FM Exhaust, 8K HID low beams & Fogs, 1100 watt Infinity & JL Stereo, 200A Alt, 3 Batteries, Power Acoustik PD-740NBT, RV camera, Hayden Tranny Cooler, 243 heads, 1.8 roller rockers
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Re: 2500HD 4.10 rear axle seal leaking

Postby ASTE25 » Feb 01 2012, 3:58am

It is easy to tell if it is a full floating axle by looking at it. Does the axle bolt onto the hub? If so, it is a full floating type. Either way, you will have to remove the axle to get to the seal. I don't think it will be a terribly hard job to do. You will have to replace the pads that are soaked in the oil.
Jordan
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Re: 2500HD 4.10 rear axle seal leaking

Postby bbrown [OP] » Feb 01 2012, 4:27am

Yeah, the axle has 8 bolts on the end of the hub (not lugs). From searches I've done on other sites, looks like you need a special axle nut socket and maybe a seal puller...what else am I missing?
K&N/Custom Intake, Banks Headers & Tuner, Dual FM Exhaust, 8K HID low beams & Fogs, 1100 watt Infinity & JL Stereo, 200A Alt, 3 Batteries, Power Acoustik PD-740NBT, RV camera, Hayden Tranny Cooler, 243 heads, 1.8 roller rockers
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Re: 2500HD 4.10 rear axle seal leaking

Postby ASTE25 » Feb 01 2012, 4:50am

It's been a while since I've done one on a full floating axle, but I think they are easier than on the 1/2 tons. I'm not sure if you will even have to take the bearings out. To be honest, I do not know exactly what your set up is like.
Jordan
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Re: 2500HD 4.10 rear axle seal leaking

Postby bbrown [OP] » Feb 01 2012, 2:37pm

OK, thanks Jordan. I see you're from AL ... I was born and raised in the southeast region (Dothan,Ozark, Ft. Rucker area) how 'bout you.? Anyways, I'm going to tear both sides down and install new seals and brake shoes. If anyone else is interested, I'll post the pics and maybe do a how-to step-by-step. There isn't a lot of info. out there on this topic. I only found one pretty good source however it was a 2004 Duramax 2500HD so I'm not sure it's the same. I will find out soon. As I said before, Haynes wasn't even in the ballpark... it said I'd need to pull the diff. cover and remove axle retainer clips. One more question for ya; the rear bearings have 150K+ miles on them...should I think about replacing them since I'll have the hubs off? I've done one of the front hub bearings already and the other one is still tight but I've got a new one on deck. Don't know if the rear bearings have similar life spans (haven't done much heavy hauling in the bed).
K&N/Custom Intake, Banks Headers & Tuner, Dual FM Exhaust, 8K HID low beams & Fogs, 1100 watt Infinity & JL Stereo, 200A Alt, 3 Batteries, Power Acoustik PD-740NBT, RV camera, Hayden Tranny Cooler, 243 heads, 1.8 roller rockers
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Re: 2500HD 4.10 rear axle seal leaking

Postby ASTE25 » Feb 01 2012, 10:28pm

I'm near Huntsville. My brother graduated from Auburn in 1994, I think. If the bearings are not making noise, or don't feel rough, I'd leave them alone. I would probably change the rear gear lube, but that's about it. the bearings are usually good for the life of the truck as long as they are properly lubricated.
Jordan
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Re: 2500HD 4.10 rear axle seal leaking

Postby bbrown [OP] » Feb 16 2012, 8:48pm

OK, I replaced my rear axle seals last weekend and I found the gaskets for the axle shaft-to-hub that none of the auto parts stores had. The GM dealer had them in stock. I found a good how-to on another forum here; http://www.duramaxforum.com/forum/how-t ... -seal.html
It was pretty helpful although I did not use RTV to make the gasket and I replaced the E-shoes while the hub was off...they were oil-soaked and cracked. My bearings were fine and I'm gonna change the diff. oil next weekend.
K&N/Custom Intake, Banks Headers & Tuner, Dual FM Exhaust, 8K HID low beams & Fogs, 1100 watt Infinity & JL Stereo, 200A Alt, 3 Batteries, Power Acoustik PD-740NBT, RV camera, Hayden Tranny Cooler, 243 heads, 1.8 roller rockers
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Re: 2500HD 4.10 rear axle seal leaking

Postby bbrown [OP] » Feb 16 2012, 8:55pm

BTW, I got good advice from a mechanic that said not to pack the bearings with grease. The rear bearings are lubricated by the diff. oil which also lubricates the locker diff. Mixing the grease and diff. oil could affect the locker diff. operation so you are better of just coating the bearings with the oil before sealing the hub up.
K&N/Custom Intake, Banks Headers & Tuner, Dual FM Exhaust, 8K HID low beams & Fogs, 1100 watt Infinity & JL Stereo, 200A Alt, 3 Batteries, Power Acoustik PD-740NBT, RV camera, Hayden Tranny Cooler, 243 heads, 1.8 roller rockers
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bbrown
Combustion on 4 pistons [L2]
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Posts: 438
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Blogs: 0
Joined: Sep 16 2011, 3:58pm
Years of membership: 2 years of membership2 years of membership
Location: Raleigh, NC
Year: 2001
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Extra Info: 2500HD 6.0 V8 4X4
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Re: 2500HD 4.10 rear axle seal leaking

Postby ASTE25 » Feb 17 2012, 12:53am

Glad you got it all fixed up.
Jordan
2013 Blue Granite Metalic Silverado 2500HD Z71 4X4 extended cab regular bed
6.6L Duramax/Allison 6 speed
Line-X premium over the rail (black)
User avatar
ASTE25
Shifting into Sixth Gear! [L3]
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Joined: Jan 03 2011, 6:37am
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Re: 2500HD 4.10 rear axle seal leaking

Postby bbrown [OP] » Feb 17 2012, 3:16pm

Thanks, No more leaks! Question; Will an unballanced tire cause premature seal and/or bearing wear? Big tires are difficult to keep balanced... as you probably know.
K&N/Custom Intake, Banks Headers & Tuner, Dual FM Exhaust, 8K HID low beams & Fogs, 1100 watt Infinity & JL Stereo, 200A Alt, 3 Batteries, Power Acoustik PD-740NBT, RV camera, Hayden Tranny Cooler, 243 heads, 1.8 roller rockers
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bbrown
Combustion on 4 pistons [L2]
Combustion on 4 pistons [L2]
Posts: 438
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Images: 65
Blogs: 0
Joined: Sep 16 2011, 3:58pm
Years of membership: 2 years of membership2 years of membership
Location: Raleigh, NC
Year: 2001
Make/Model: Chevrolet Silverado
Extra Info: 2500HD 6.0 V8 4X4
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