Rearend problems, need help!
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Elder User
Joined: Sep 2009
Posts: 860
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From: Grantsburg,WI
Rearend problems, need help!
When I leave an intersection and turn left or right my truck vibrates. It's not the front end.I think it's the pinion bearing. The rear end is pretty hot to the touch at the differential.I do have a leak at the wheel seal. and put gear oil in the other day about a quart filled it up. Does anyone think my ring and pinion could be ruined. i am going to fix the wheel seal and brakes very soon any advice would be great. thanks in advance. I have replaced one ring and pinion before, but that was a chevy 10 bolt. The tag on my axle reads
S132N
L101026K14
What rear end is this? So I can get the pinion bearing.
S132N
L101026K14
What rear end is this? So I can get the pinion bearing.
Lead Driver
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
My guess is that the "L10" is actually "4L10", and the "4" is hidden or "erased" by the bolt holding the tag. That would make it a limited-slip 4.10 gear. Did you put the friction additive in with the gear oil?
Senior User
Joined: Jun 2011
Posts: 154
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From: Van Wert, Ohio
Wat year is your truck? It os probably a sterling 10.25 I just redid my rearend. New diff and all. I would change all the seals. The rear seals are just like an oversized o-ring. The axle shafts slide out fairly easy. The diff has 4 bolts (after you take the diff cover off). There will be two shims that will be on the tubes of the axle housing. They may or may not come out. Don't lose them. Since your in there replace the bearings. I bought mine and had them pressed at napa for around $90. Take the back section of the drive shaft off. 4 bolts at universal joint and a clamp by the connection. Impact will be your best bet for the pinion nut. If you use an impact you can do this before or after diff is out. be sure to pull the vss out first it sits on top of the pumpkin. This is all off the top of my head social may have missed some things.
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Elder User
Joined: Sep 2009
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From: Grantsburg,WI
no additive just had synthetic. The plug was pretty goopped up, but I haven't changed it forever. I might try to determine if there is damage to the ring and pinion when I take it apart. If I think looks good I might just clean it up and replace the pinion bearing and seal. Just wondering if when the pinion bearing goes if it can wreck the pinion and ring gear. Should I try looking at clutch disks in the diff?
My truck is a 97 with 260,000 miles. The vibration is not to noticable, but I can feel it. I know my truck though. had it since it was new.
My truck is a 97 with 260,000 miles. The vibration is not to noticable, but I can feel it. I know my truck though. had it since it was new.
Thread Starter
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Elder User
Joined: Sep 2009
Posts: 860
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From: Grantsburg,WI
Ohh, Thank for the replies. My wife and daughter said no one would reply to REAREND PROBLEMS, NEED HELP. Ya they got a laugh out of that.
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Senior User
Joined: Jun 2011
Posts: 154
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From: Van Wert, Ohio
Well my truck felt like it wasn't shifting right. Vss went out and had a lot of shavings on it. Pulled the diff cover off and say a train wreck!! There are two pins in the rear diff (can't remember the names of them). Some how the little set pin broke so the big pin was sliding around and was about an inch shorter than it should have been. Wallowed out the diff about a ¼ inch so the whole diff was trash. The whole thing was a fairly easy fix/ complete rebuild just took a little time. I would replace all bearings and seals since your already in there. My truck is a 95 with like 278k on everything but motor. This is also not the original rearend. I seized a bearing going 80 and it completely sheared the axle shaft and melted the housing. Very expensive fix. So if I were you I would do everything
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Lead Driver
Joined: Oct 2003
Posts: 8,476
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From: Madison, WI
Wait 'til they see you looking at posts about Speedo and Tranny problems......
Hotshot
Joined: Feb 2009
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From: Plankinton, SD
Steve, if I were you, I'd pull the rear cover. It's easy and if you haven't changed the fluid for a while it should be done anyway. Maybe you'll see something, maybe you won't, but you will start to narrow it down. If you do have LS, make sure you put the additive in there.
Senior User
Joined: Feb 2009
Posts: 148
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From: Western NC
The vibration you are describing would seem to be lack of friction modifiers in the diff lube. If you change your rear end fluid and go back with a quality synthetic (like Amsoil) you shouldn't have any more problems.
Lead Driver
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
Senior User
Joined: Feb 2009
Posts: 148
Likes: 0
From: Western NC
Interesting -- Amsoil makes a friction additive, but they also claim (see AMSOIL - Slip Lock® Differential Additive (ADA) , last paragraph) that their gear lubes do NOT require it. But it's a somewhat qualified statement, and given the OP presently has a mix of Amsoil and ????? now, an refresh is in order.
That being said there could always be a first time.