transmission leak at driveshaft/output shaft on C6? - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford F-100 | Ford F-150 | Ford F-250 | Ford F-350 | Ford Super Duty | Ford Diesel Forum for discussion of the Ford F100, F150, F250, F350, Superduty and Diesel trucks.

 
LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 07-28-11, 09:34 PM Thread Starter
Registered User
 
Join Date: Jul 2011
Posts: 1
transmission leak at driveshaft/output shaft on C6?

Hey guys, i recently bought a 1989 E350 Box Truck with a 7.3L diesel IDI and C6 transmission. I had it in for a basic transmission service, new filters, new fluid, bands adjusted. After I got it back I found that it leaks fluid at what appears to be where the output shaft from the transmission meets the drive shaft at or around the universal joint. It's odd, it doesn't leak at all when totally cold. Doesn't leak at all when truck is running and hot. After I drive for awhile, shut off and truck cools down for about 2 hours, a drip, drip, drip drip starts at this spot. About 1 qt will come out before it stops. What the heck could this be? An O-ring there gone bad? Could this have been caused when they serviced it, or just coincidence? Here are a few photos:





Salvatorparads is offline  
Sponsored Links
Advertisement
 
post #2 of 2 (permalink) Old 07-29-11, 12:07 AM
Administrator
 
Join Date: Sep 2006
Location: Arkansas
Posts: 6,814
Re: transmission leak at driveshaft/output shaft on C6?

Hi and welcome for the forums. Its more than likely the rear seal (Extension Housing Seal) that's leaking. Its a common issue and a pretty easy fix. Unbolt the drive shaft from the differential (if its a two piece drive shaft also unbolt the carrier bearing from the frame), slide the drive shaft yoke from the tail shaft of the transmission. Pry out the seal and in with a new one. I believe there are two different seals so you might as well take the old one it to match up to the new one. Also, if you'll jack up the rear of the vehicle you will minimize fluid loss when you remove the yoke from the transmission.
jwko is offline  
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Trucks | Utes | Vans |SUVs | Crossovers > Ford F-100 | Ford F-150 | Ford F-250 | Ford F-350 | Ford Super Duty | Ford Diesel


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome