metal chunks in diff housing
Thread Starter
|
Senior User
Joined: May 2015
Posts: 282
Likes: 3
From: Sonora,Ca
metal chunks in diff housing
Hey i need some help guys. I have a 1990 f250 with a sterling 10.25 rear axle full float. I was draining the gear oil and was sweeping my finger in the little catch hole at the bottom in the inside of the housing. I pulled out what looked liked a roller bearing. But looking at bearings, they all looked fine and were larger than the one i pulled out. I then saw the top of the spider gear pin was shered off along with a hole. Do u think thats were the pin came from? And what would cause this kind of damage?
Fleet Mechanic
Joined: Aug 2011
Posts: 1,580
Likes: 266
In your pic of the pin, just above it on the carrier looms like marks evenly spaced from each other that look like the pinion mite of hit it, I had a 8.8 that did that but didn't blow a chunk of the pins out but did break the bolt holding the pin in, made for a hell of a time to get out.
Thread Starter
|
Senior User
Joined: May 2015
Posts: 282
Likes: 3
From: Sonora,Ca
I took a look at the ring gear, no damage . as little as i can see of the pinion it seems to be alright in terms of damage. I know it needs to be fixed sooner vs later but do think it would still be drivable for a bit until i get a trutrac?
Fleet Mechanic
Joined: Aug 2011
Posts: 1,580
Likes: 266
Check to see if the pinion is loose, if it is you can remove the nut, apply some loctite and tighten it back down to 160-180 ft-lbs and run it like that as a quick fix, to do it right you should replace the bearings and gears if they show wear or damage. As for the broken pin, you take a risk running it like that, it may stay in or it may fall out which will stop you instantly and destroy the diff.
Just my 2cents
Just my 2cents
Trending Topics
Thread Starter
|
Senior User
Joined: May 2015
Posts: 282
Likes: 3
From: Sonora,Ca
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Fleet Mechanic
Joined: Aug 2011
Posts: 1,580
Likes: 266
If I were in your shoes, I'd find another diff that's 93 or new and swap that in and save all the hassle and expense of changing gears (unless you were thinking ratio change) and if funding allowed get the Detroit locker and stick it in the new axle then put it under the truck, your going to spend at least 500 on bearings and gears just to fix this axle and you pick up a jy unit for 200 or less.
Just another option.
Just another option.
Thread
Thread Starter
Forum
Replies
Last Post