Topic Sponsor
2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck.

Rear End Seal Leaking.

Thread Tools
 
Search this Thread
 
Old 08-04-2015, 08:49 PM
  #1  
Member
Thread Starter
 
DSNY30's Avatar
 
Join Date: Jul 2015
Posts: 46
Likes: 0
Received 4 Likes on 2 Posts
Default Rear End Seal Leaking.

Is it hard to change the Rear Seal Where the drive shaft Attaches. It's leaking a little bit. I want to change the rear oil while I'm at it. Which oil is best and what do you use as a gasket for the cover that RTF or what ever it's called liquid gasket stuff. thanks
Old 08-04-2015, 09:13 PM
  #2  
Senior Member
 
jamesyarbrough's Avatar
 
Join Date: Jun 2010
Location: TEXAS
Posts: 718
Received 45 Likes on 36 Posts

Default

If u dont know what ur doing u could kill the rearend. You have to pull the pinion yoke. When u put it back together if u go too tight u will over crush the sleeve and the pinion bearing will fail. Too loose and it will rattle back and fourth and take out the ring and pinion.

If you dont feel completely competent dont do it ur self



I use 75w140 royal purple
Old 08-05-2015, 07:54 PM
  #3  
Senior Member
 
Rick's 06's Avatar
 
Join Date: Jan 2011
Location: Charlotte NC
Posts: 718
Received 49 Likes on 47 Posts

Default

I just did my seals on Friday. If you just do the pinion seal it's a pretty quick repair. If you do the axle seals it's quite a bit longer. What I did to verify I had the same preload on the pinion was to mark the pinion nut to the pinion shaft with a paint pen and then count the number of revolutions it took to get it off. Then put it back on with the exact same number of revolutions and line up the marks you made. Tools you'll need are a 12mm twelve point wrench to remove the drive shaft off the companion flange. A 28mm six point deep well socket to remove the pinion nut and a wheel puller to remove the companion flange from the diff. Then you've got access the seal.
Old 08-05-2015, 07:59 PM
  #4  
Senior Member
 
PerryB's Avatar
 
Join Date: May 2014
Location: Chico, Ca.
Posts: 4,574
Received 964 Likes on 742 Posts

Default

Thats a good idea, Rick !
Old 08-06-2015, 06:45 AM
  #5  
Mark
iTrader: (1)
 
techrep's Avatar
 
Join Date: Jan 2009
Location: Va. Beach, VA.
Posts: 36,863
Received 2,415 Likes on 2,116 Posts

Default

Originally Posted by DSNY30
Is it hard to change the Rear Seal Where the drive shaft Attaches. It's leaking a little bit. I want to change the rear oil while I'm at it. Which oil is best and what do you use as a gasket for the cover that RTF or what ever it's called liquid gasket stuff. thanks
sounds like you need to take this to a shop for repair.

Last edited by Adobe2X; 08-06-2015 at 02:45 PM.
Old 08-06-2015, 08:12 AM
  #6  
Senior Member
 
bwFX42006's Avatar
 
Join Date: May 2012
Posts: 781
Received 27 Likes on 23 Posts

Default

Agreed ^^^

I had a friend try and replace my pinion seal, he's a very good mechanic...but even after he had replaced it, I still had to have a majority of the rear-end rebuilt. Luckily it was covered under my extended warranty. This is not something I would suggests for a typical shade tree mechanic...unless you have an extra grand laying around to rebuild the rear if something goes wrong.
Old 08-06-2015, 08:57 AM
  #7  
Mark
iTrader: (1)
 
techrep's Avatar
 
Join Date: Jan 2009
Location: Va. Beach, VA.
Posts: 36,863
Received 2,415 Likes on 2,116 Posts

Default

It also requires special tools...



Quick Reply: Rear End Seal Leaking.



All times are GMT -4. The time now is 05:46 PM.