Sterling info
Thread Starter
|
Mountain Pass
Joined: Mar 2009
Posts: 120
Likes: 0
From: Washington, MO
Sterling info
I have an F250 4x4 with a sterling rear and was wondering how you can tell if its a locker? I am doing a frame up rebuild and will be rebuilding the front and rear axels (bearings & seals) and was wondering if it was a locker or not. If not, is it something I should look into upgrading during the rebuild? The truck will be a dayly driver with some off road use. First time doing this so any info would be helpful. I will be posting pics later as I go. Thanks
Post Fiend
Joined: Jan 2005
Posts: 8,402
Likes: 10
Ford Axle Code Chart .: Articles Compare your door sticker axle code with the codes in this chart (ignore where it says 1991).
Senior User
Joined: Aug 2007
Posts: 111
Likes: 1
From: albany, oregon
pull the cover and look inside. You need to pull that to rebuild it anyway. You can also spin one side by hand and watch which way the other side spins. If they spin the same direction you probobly have and trac lock diff, if the other side spins the opposite direction then you have an open diff.
Senior User
Joined: Sep 2010
Posts: 131
Likes: 0
From: northern NV
Take the cover off the diff and take a pic and post it if you can't tell from looking... Do you know how an open diff looks?
Look for the clutches as you can see in this build thread...
Sterling 10.25 Trac lock rebuild
Look for the clutches as you can see in this build thread...
Sterling 10.25 Trac lock rebuild
Trending Topics
Postmaster
Joined: Aug 2005
Posts: 4,728
Likes: 8
From: Cleveland, TN
NO NEED TO PULL THE COVER!!!!!
Just jack BOTH back wheels up enough to clear the ground, then with it in gear (manual) or Park (auto) spin one wheel by hand, if it turns the opposite direction it is an open rear end.. If it won't turn it will be limited slip.
Then take it out of gear or park and see if it turns the same way as the one you are spinning. This will prove it is limited slip..
Just jack BOTH back wheels up enough to clear the ground, then with it in gear (manual) or Park (auto) spin one wheel by hand, if it turns the opposite direction it is an open rear end.. If it won't turn it will be limited slip.
Then take it out of gear or park and see if it turns the same way as the one you are spinning. This will prove it is limited slip..
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Fleet Owner
Joined: Oct 2005
Posts: 20,785
Likes: 1,751
From: Kentucky
There is a difference between a locker and limited slip differential. They both have advantages/disadvantages depending on your needs.
There is some info of how each type functions here: HowStuffWorks "Differentials"
There is some info of how each type functions here: HowStuffWorks "Differentials"
Thread
Thread Starter
Forum
Replies
Last Post
techningeer
1987 - 1996 F150 & Larger F-Series Trucks
5
Apr 20, 2014 09:43 PM
old blue beast
1987 - 1996 F150 & Larger F-Series Trucks
3
Apr 12, 2013 06:23 PM
Blue Rebel
Clutch, Transmission, Differential, Axle & Transfer Case
2
Dec 30, 2009 12:26 PM
