1996 sterling 10.25 pinion seal problem - Ford Truck Enthusiasts Forums



1994.5 - 1997 7.3L Power Stroke Diesel  
Sponsored by:
Sponsored by:

1996 sterling 10.25 pinion seal problem

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 03-16-2012, 03:01 PM
96F250supercab 96F250supercab is offline
New User
Thread Starter
 
Join Date: Jun 2010
Posts: 14
96F250supercab is starting off with a positive reputation.
1996 sterling 10.25 pinion seal problem

I have a 96 7.3 f250 with 133,000 miles. In may of 2005 20,000 miles ago I had the pinion seal leaking. The shop changed the pinion seal and flange yoke. Now the seal is leaking only after driving an hour on the highway. It doesn't leak around town. I can go weeks with no leaks in town. The vent tube is clear. It's not leaking in front of nut. The fluid level was a little high. I opened the filler plug and let it drain (aprox.3-4oz.) until it stopped. Still leaking from seal. There is no play in the yoke. I bought new parts from ford, a seal, companion flange and nut. Should I replace all 3 parts. Everyone recommends different. how many times can you reuse nut? I figured flange as extra precaution. I was told to coat outer edge of seal with permatex non hardening sealer. Also permatex between the washer and pinion flange yoke mating surfaces and loctite the old nut (not to use new nut). WHY WOULD THE NEW SEAL LEAK WITHIN 20,000 MILES & 7 YEARS...not being used enough. I live in north central fl...cold winters hot summers. Thanks for any input you might have
Reply With Quote
  #2  
Old 03-16-2012, 06:40 PM
427 fordman's Avatar
427 fordman 427 fordman is offline
Post Fiend
 
Join Date: Feb 2009
Location: Plankinton, SD
Posts: 9,972
427 fordman has a great reputation on FTE.427 fordman has a great reputation on FTE.427 fordman has a great reputation on FTE.427 fordman has a great reputation on FTE.427 fordman has a great reputation on FTE.
Cold winters, florida?? kidding...kinda

Just checking, but do you have any noise back there, like a pinion bearing out? If you bought all the parts, might as well use them. My guess on why the seal leaked if all else is ok, maybe just a cheapo piece of crap.
Reply With Quote
  #3  
Old 03-16-2012, 06:52 PM
96F250supercab 96F250supercab is offline
New User
Thread Starter
 
Join Date: Jun 2010
Posts: 14
96F250supercab is starting off with a positive reputation.
No noise in rear and the companion flange has no play. When mechanic change it he used ford flange but ford sent wrong seal so he used aftermarket seal. A few friends said to use the old nut. I'm in Ocala it gets as low as 17 degrees and high of 99. Not as cold as north though.
Reply With Quote
  #4  
Old 03-16-2012, 07:13 PM
427 fordman's Avatar
427 fordman 427 fordman is offline
Post Fiend
 
Join Date: Feb 2009
Location: Plankinton, SD
Posts: 9,972
427 fordman has a great reputation on FTE.427 fordman has a great reputation on FTE.427 fordman has a great reputation on FTE.427 fordman has a great reputation on FTE.427 fordman has a great reputation on FTE.
I was just kidding on the weather. Although it ranges from -30 to 110 here. Anyway, I guess I wouldn't be afraid of using the old nut either, but am wondering why they said not to use the new one?
Reply With Quote
  #5  
Old 03-16-2012, 07:21 PM
ReBilld's Avatar
ReBilld ReBilld is offline
Post Fiend
 
Join Date: Jan 2012
Location: Southern West Virginia
Posts: 10,973
ReBilld is a splendid one to beholdReBilld is a splendid one to beholdReBilld is a splendid one to beholdReBilld is a splendid one to beholdReBilld is a splendid one to beholdReBilld is a splendid one to behold
I've reused the old nuts before, never seemed to cause any problems, but I don't see any reason not to use the new one either. I agree with Darin, probably just a bad seal. 20,000 miles in 7 years, I'm assuming the truck sits a lot. That can do it to a cheap seal.
Reply With Quote
  #6  
Old 03-16-2012, 09:28 PM
96F250supercab 96F250supercab is offline
New User
Thread Starter
 
Join Date: Jun 2010
Posts: 14
96F250supercab is starting off with a positive reputation.
Thanks.... I'm semi retired and only drive it now 1-2 times a week. I'm thinking now of just changing the seal only. What permatex sealant is non hardening for this application?
Reply With Quote
  #7  
Old 03-17-2012, 04:21 PM
ReBilld's Avatar
ReBilld ReBilld is offline
Post Fiend
 
Join Date: Jan 2012
Location: Southern West Virginia
Posts: 10,973
ReBilld is a splendid one to beholdReBilld is a splendid one to beholdReBilld is a splendid one to beholdReBilld is a splendid one to beholdReBilld is a splendid one to beholdReBilld is a splendid one to behold
Quote:
Originally Posted by 96F250supercab View Post
Thanks.... I'm semi retired and only drive it now 1-2 times a week. I'm thinking now of just changing the seal only. What permatex sealant is non hardening for this application?
I've always used RTV Gasket Maker.
Reply With Quote
  #8  
Old 03-17-2012, 05:18 PM
96F250supercab 96F250supercab is offline
New User
Thread Starter
 
Join Date: Jun 2010
Posts: 14
96F250supercab is starting off with a positive reputation.
Thanks for info>>.
Reply With Quote
  #9  
Old 03-17-2012, 07:43 PM
Mdt1992's Avatar
Mdt1992 Mdt1992 is offline
Senior User
 
Join Date: Oct 2009
Location: VA BEACH
Posts: 324
Mdt1992 is gaining momentum as a positive member of FTE.
check for clogged vent in the rear diff, mine was and caused mine to leak, replaced seal it was fine for like a month and then started leaking, cleaned vent and cleaned everything been a year now
Reply With Quote
  #10  
Old 03-18-2012, 07:33 AM
96F250supercab 96F250supercab is offline
New User
Thread Starter
 
Join Date: Jun 2010
Posts: 14
96F250supercab is starting off with a positive reputation.
The vent check was the first thing I did as stated in original post.
Reply With Quote
  #11  
Old 03-18-2012, 08:58 AM
96F250supercab 96F250supercab is offline
New User
Thread Starter
 
Join Date: Jun 2010
Posts: 14
96F250supercab is starting off with a positive reputation.
On the old nut do I use the blue loctite (removable) or the red (permanant)?
Reply With Quote
  #12  
Old 03-18-2012, 09:32 AM
BlueMule's Avatar
BlueMule BlueMule is offline
Posting Guru
 
Join Date: Nov 2001
Location: Ft Scott
Posts: 1,743
BlueMule has a good reputation on FTE.BlueMule has a good reputation on FTE.
I'd use the blue, it'll hold just fine. If you use the red you'll need to take a torch to it to take it loose and I wouldn't wanna have to use a torch that close to a new seal.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Rear driveshaft slip yoke boot replacement wpnaes Excursion - King of SUVs 1 06-28-2017 09:58 PM
Help with NP205 parts Hogdriver 1973 - 1979 F-100 & Larger F-Series Trucks 5 06-27-2017 06:12 PM
Ford 9" pinion seal Thisguy65 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 19 06-08-2017 11:44 AM
F 350 pinion seal, u-joint replacement, and differential cover replacement nvrsadi 1999 - 2003 7.3L Power Stroke Diesel 10 05-17-2016 05:19 PM
Rear Diff Pinion Seal Replaced...No more leaking MoyockPowerstroke 6.0L Power Stroke Diesel 2 10-23-2009 09:15 PM


Go Back   Ford Truck Enthusiasts Forums >

Tags
1025, 105, 1996, 1997, axle, f250, flange, ford, hd, leaking, pic, pinion, replacing, seal, sterling, yoke

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -5. The time now is 04:50 PM.


 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: