Rear end noise
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Senior User
Joined: Jan 2007
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From: Wichita, KS
Rear end noise
I have been noticing a little grumble from the rear when making tight turns for the past month. I changed diff fluid and no change.
When pulling a couple 7k lbs trailers this weekend it was a lot more noticable. I am thinking rear bearings. Any ways to test this? Other ideas? What do rear bearings cost to replace?
When pulling a couple 7k lbs trailers this weekend it was a lot more noticable. I am thinking rear bearings. Any ways to test this? Other ideas? What do rear bearings cost to replace?
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
If you believe it to actually be a rear bearing, you should address this soon.
If yours is a single-rear-wheel, here's some reading material for you:
https://www.ford-trucks.com/forums/8...-bearings.html
Pop
If yours is a single-rear-wheel, here's some reading material for you:
https://www.ford-trucks.com/forums/8...-bearings.html
Pop
Thread Starter
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Senior User
Joined: Jan 2007
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From: Wichita, KS
It is a LS rear end. I used Mobile 1 Syn fluid which shouldn't need additive. Or does it?
Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
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From: Grand Lake, La.
That I don't know. I would look it up and see what they say.
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Senior User
Joined: Jan 2007
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From: Wichita, KS
I have only noticed it a low speeds but that is because it only does it on tight turns (back out of the drive and then taking off down the road). But I did notice it making a left hand turn this weekend (twice) when I had a heavy trailer (10 mph).
I will try shifting on a corner tonight. What difference would this make though? Eliminate trans problem?
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Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
I've used Mobil 1 and didn't use additive, and had no problems. A good product!
In my experience, the limited-slip dogs working won't give you much noise, but more of a "feeling" and maybe a little clicking.
Growling or grumbling is likely gonna' be more related to side-loading of bearings on their way out.
Here's some more reading for you:
Welcome to camodown's Rear Hub Seals and Parking Brake repairs
Pop
In my experience, the limited-slip dogs working won't give you much noise, but more of a "feeling" and maybe a little clicking.
Growling or grumbling is likely gonna' be more related to side-loading of bearings on their way out.
Here's some more reading for you:
Welcome to camodown's Rear Hub Seals and Parking Brake repairs
Pop
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Thread Starter
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Senior User
Joined: Jan 2007
Posts: 355
Likes: 0
From: Wichita, KS
I've used Mobil 1 and didn't use additive, and had no problems. A good product!
In my experience, the limited-slip dogs working won't give you much noise, but more of a "feeling" and maybe a little clicking.
Growling or grumbling is likely gonna' be more related to side-loading of bearings on their way out.
Here's some more reading for you:
Welcome to camodown's Rear Hub Seals and Parking Brake repairs
Pop
In my experience, the limited-slip dogs working won't give you much noise, but more of a "feeling" and maybe a little clicking.
Growling or grumbling is likely gonna' be more related to side-loading of bearings on their way out.
Here's some more reading for you:
Welcome to camodown's Rear Hub Seals and Parking Brake repairs
Pop
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
You might jack up the entire rear end and rotate the tires by hand and see if you can detect any sort of bearing rumble. You probably won't be able to hear it as much as feel it, but I can't say for sure.
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