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

Rear Diff cover

Thread Tools
 
Search this Thread
 
Old 05-08-2018, 11:01 AM
  #11  
Mark
iTrader: (1)
 
techrep's Avatar
 
Join Date: Jan 2009
Location: Va. Beach, VA.
Posts: 36,881
Received 2,421 Likes on 2,120 Posts

Default

If the outside looked like that.. I wonder how much RTV got into the gear oil... you are supposed to let it get tacky prior to mating the cover for a reason.
Old 05-08-2018, 11:07 AM
  #12  
SSDD
 
SCORGE's Avatar
 
Join Date: Feb 2016
Posts: 17,605
Received 1,612 Likes on 1,125 Posts

Default

Originally Posted by techrep
If the outside looked like that.. I wonder how much RTV got into the gear oil... you are supposed to let it get tacky prior to mating the cover for a reason.
good point
Old 05-08-2018, 11:24 AM
  #13  
Senior Member
Thread Starter
 
Falbeon's Avatar
 
Join Date: Sep 2016
Location: Minnesota
Posts: 100
Received 36 Likes on 23 Posts
Default

Originally Posted by techrep
... you are supposed to let it get tacky prior to mating the cover for a reason.
Good to know
Old 05-08-2018, 11:36 AM
  #14  
Member
 
tommyboy180's Avatar
 
Join Date: Feb 2018
Posts: 93
Likes: 0
Received 2 Likes on 2 Posts
Default

Originally Posted by techrep
somebody got a little carried away with that RTV...
No, it's not a lot. It's actually the proper procedure to put a 1/4" bead of RTV down. It will squish out like that.

Originally Posted by Falbeon
I'd clean it up too
Wiping it away can pull it out of the cover ruining your gasket.

Originally Posted by techrep
I wonder how much RTV got into the gear oil...
None since you let it cure before you fill with gear oil.




I take it ya'll have never done RTV gaskets before lol
Watch this video if you think this is too much RTV -
Old 05-08-2018, 11:40 AM
  #15  
SSDD
 
SCORGE's Avatar
 
Join Date: Feb 2016
Posts: 17,605
Received 1,612 Likes on 1,125 Posts

Default

I've done mine...twice
Old 05-08-2018, 03:59 PM
  #16  
Mark
iTrader: (1)
 
techrep's Avatar
 
Join Date: Jan 2009
Location: Va. Beach, VA.
Posts: 36,881
Received 2,421 Likes on 2,120 Posts

Default

Originally Posted by tommyboy180
No, it's not a lot. It's actually the proper procedure to put a 1/4" bead of RTV down. It will squish out like that.



Wiping it away can pull it out of the cover ruining your gasket.



None since you let it cure before you fill with gear oil.




I take it ya'll have never done RTV gaskets before lol
Watch this video if you think this is too much RTV - https://youtu.be/-LIm-YZ4DUI?t=866
I have done plenty of RTV gaskets.. that was not cured when the bolts were drawn down.. it would of never oozed out the bolt holes.. that’s not a 1/4” bead..lol
Old 05-08-2018, 08:45 PM
  #17  
Member
 
tommyboy180's Avatar
 
Join Date: Feb 2018
Posts: 93
Likes: 0
Received 2 Likes on 2 Posts
Default

According to the manual the gasket should be 1/8 to 3/16" in size. Yeah, 1/4 might be too much, but as long as it's cured it won't get into the gears.


Looking at FordTechMakuloco's gasket. Mine and his look almost identical.



I'd argue that the pic I posted is a good looking gasket.
Old 05-12-2018, 09:17 PM
  #18  
Senior Member
 
tradosaurus's Avatar
 
Join Date: Sep 2010
Location: Texas
Posts: 197
Received 17 Likes on 17 Posts

Default

I bought the OEM gasket for the differential cover. Is RTV sealant better than just the gasket? Can I use both?
Old 05-12-2018, 09:53 PM
  #19  
Senior Member
 
PerryB's Avatar
 
Join Date: May 2014
Location: Chico, Ca.
Posts: 4,574
Received 964 Likes on 742 Posts

Default

I just use RTV silicone. Permatex Ultra Black is my favorite. The problem with using both is that the silicone acts as a lubricant and the gasket wants to squeeze out. If you do use both, just tighten the bolts slightly, until you get a uniform bead of silicone showing around the edge of the cover. Now let it cure overnight and then snug it down.
Old 05-13-2018, 10:52 AM
  #20  
Senior Member
 
tradosaurus's Avatar
 
Join Date: Sep 2010
Location: Texas
Posts: 197
Received 17 Likes on 17 Posts

Default

Fel-Pro gaskets


Quick Reply: Rear Diff cover



All times are GMT -4. The time now is 04:06 PM.