Scraping sound when 4x4 hubs locked in
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Junior User
Joined: Feb 2004
Posts: 68
Likes: 0
From: Illinois
Scraping sound when 4x4 hubs locked in
91 F150 4x4
Getting a loud scraping sound when the 4x4 hubs are locked.
Both going forward and reverse. Sounds like left front.
Doesn't do it when they are turned to free and 2 wheel drive.
The automatic hubs had been replaced with Warner manuals before I bought it.
Don't know when, I bought it in 2004.
With hubs locked and in 4 wheel high, the 4 wheel drive works.
Did a quick search and sounds like maybe a bad lockout but wanted to ask
for advice anyway.
Getting a loud scraping sound when the 4x4 hubs are locked.
Both going forward and reverse. Sounds like left front.
Doesn't do it when they are turned to free and 2 wheel drive.
The automatic hubs had been replaced with Warner manuals before I bought it.
Don't know when, I bought it in 2004.
With hubs locked and in 4 wheel high, the 4 wheel drive works.
Did a quick search and sounds like maybe a bad lockout but wanted to ask
for advice anyway.
Lead Driver
Joined: Aug 2006
Posts: 5,670
Likes: 13
From: Sand Lake, MI
Also look where the front axle shafts pass through and very near the IFS arms, bad bushings or something bent could have one rubbing there.
Kinda sounds like the problem from what you've said.
While your at it check where the front drive shaft passes over the cross member (I doubt this one but worth a look anyway).
Kinda sounds like the problem from what you've said.
While your at it check where the front drive shaft passes over the cross member (I doubt this one but worth a look anyway).
Cargo Master
Joined: Jan 2004
Posts: 2,512
Likes: 8
From: Cook Forest and Irwin PA
you have a u joint on the outboard end of the axle shaft - likely bad, and you have a stub shaft support bearing inside the spindle - definitely bad. (even if its not making the noise, I guarantee you its bad)
ITs not rocket science to take apart and fix, but it is challenging due to rust. Plus places like advance which DO have the parts, will look at you with a stupid look on their face until you smack em hard enuf.
I posted somewhere the procedure to fix these gizmos...search on my posts with proper key words to find it.
ITs not rocket science to take apart and fix, but it is challenging due to rust. Plus places like advance which DO have the parts, will look at you with a stupid look on their face until you smack em hard enuf.
I posted somewhere the procedure to fix these gizmos...search on my posts with proper key words to find it.
Logistics Pro
Joined: Mar 2005
Posts: 4,698
Likes: 47
From: Mexico, Missouri
Had same sound on my '92 F-150 300, same side, and have automatic hubs. Only did it when 4X4 was locked on. I tore apart the hub. Not of all it, jacked the front up, then pulled the tire off. I let the axle lean a bit down, then sprayed some PB blaster in, soaked it. Then I let it sit back up, let it soak for many hours, then sprayed it some more, bunch of trash came out, like rust and fine metal liquid, like graphite. Then took some compressed air, lightly blew it out well, made sure I cleaned it really good, then put some axle grease in as far as my screwdriver would go. Packd it good with it, while spinning it, then I removed a bunch of the excess, put it back together and drove it with 4-wheel drive. Not a sound of that scraping since, but I'm betting I'll need to replace some things whenever I change pads and rotors next spring and summer. To cold and too poor this winter!
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 38
From: EXTREME southwest CT
2nd this advice.....
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Lead Driver
Joined: Aug 2006
Posts: 5,670
Likes: 13
From: Sand Lake, MI
you have a u joint on the outboard end of the axle shaft - likely bad, and you have a stub shaft support bearing inside the spindle - definitely bad. (even if its not making the noise, I guarantee you its bad)
ITs not rocket science to take apart and fix, but it is challenging due to rust. Plus places like advance which DO have the parts, will look at you with a stupid look on their face until you smack em hard enuf.
I posted somewhere the procedure to fix these gizmos...search on my posts with proper key words to find it.
ITs not rocket science to take apart and fix, but it is challenging due to rust. Plus places like advance which DO have the parts, will look at you with a stupid look on their face until you smack em hard enuf.
I posted somewhere the procedure to fix these gizmos...search on my posts with proper key words to find it.
Anything that might make the noise they hear and couldn't see anything obviously wrong with it.
That in turn brings em here to us........guess I should rethink that huh?
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Thread Starter
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Junior User
Joined: Feb 2004
Posts: 68
Likes: 0
From: Illinois
Don't have a garage and it's too cold to work on it in the drive.
I'll see if I can dig out a path in my Dad's garage to pull it in this weekend
and lift the front end up and take a look.
Trying not to drive it too much, but is it doing more damage even in 2 wheel drive?
It sure doesn't sound too good when in 4 wheel, but only engage it to get up a snowy driveway.
Thanks for the replies.
Laughing Gas
Joined: Dec 2007
Posts: 959
Likes: 8
From: Imperial, MO
I posted the O'reilly part numbers necessary for the replacement of the axleshaft support bearing inside the spindle in a thread just a week or two ago. It should be pretty easy to find using the search.
-Rod
Elder User
Joined: Feb 2008
Posts: 797
Likes: 1
From: ohio
Well u might wanna check to make sure the caps on the inner front ujoint are clipped in, mine was makin that noise and one of the caps just bout came out. they were rubbin on the grease fitting for ball joint
Posting Guru
Joined: Dec 2006
Posts: 1,639
Likes: 2
I don't know why, I always kinda figure a guy's looked for problems. Stuff like bad u-joints. Maybe even jacked it up spun the wheels with the hubs locked some while looking and listening and even checked stuff for play.
Anything that might make the noise they hear and couldn't see anything obviously wrong with it.
That in turn brings em here to us........guess I should rethink that huh?
Anything that might make the noise they hear and couldn't see anything obviously wrong with it.
That in turn brings em here to us........guess I should rethink that huh?
now for the poster, i got some grease from my wheelbearings in my hubs (got a little overzealous when packing the bearings) and the drivers side wouldn't engauge all of the way and rubbed on the axle. and then it started to try and engauge when going around a left turn, just pull them off and give them a good cleaning and spray them with silocone spray to lube them, DON"T spray blaster anywhere around your bearings it'll eat the grease right out of them
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