[MrBill1]

I just received my new OE Ford finned aluminum rear diff cover from Bob at PowerStrokeShop.
Now I one quick question. How is it sealed to the rear?
The cover has a groove milled all the way around the flange, looks like an o-ring groove. Is it?
Or is it just installed with some RTV like the stocker?

TIA.

MrBill.

 

[69W900A]

Just use some grey RTV such as Loctite 599 and you should be fine.

 

[Fast_Ashley]

Silicone that b!tch

 

[jtharvey]

RTV will work just fine for you.

 

[Arisley]

In case nobody mentioned it, some silicone will do the job for you.

 

[gregrob]

You know, everyone has their opinions on this.

Mine might not be the popular one, but I vote for silicone.

 

[MrBill1]

Yea, but has anybody tried silicone?

 

[gregrob]

I tried it once, it worked OK but silicone works better.

Just use silicone

 

[strokin_early_99]

Permatex Ultra black silicone

 

[Diezel Dawg]

silicone, damn guys, quit leading this guy along!!

 

[powertrip]

So your saying just use silicone?

 

[69W900A]

I'm not sure, but I think someone did say just use silicone. Silicone should work.

 

[Stewart]

There sure is a lot of this stuff being bandied about in this thread!

All joking aside...

Apply a new, continuous bead of sealant to the differential housing cover.
Use Clear Silicone Rubber D6AZ-19562-AA or equivalent meeting Ford specifications ESB-M4G92-A.

NOTE: The differential housing cover must be installed within 15 minutes of application of the silicone, or new sealant must be applied. If possible, allow 1 hour before filling with lubricant to ensure the silicone sealant has properly cured.

Install the differential housing cover and tighten the differential housing cover bolts.



Stewart

 

[69W900A]

I don't think I'd waste that good silicone on a diff cover, I'm SURE I can find something better to use them on.

Loctite 599, aka Cummins Grey, aka Navistar Grey. We use that to install all of our Meritor/Rockwell diffs. The 599 takes high TQ loads much better than other types of RTV. If it had much of a chance to leak we wouldn't be using it, no one wants to pull a diff twice. They are big and heavy and you have to move a lot of other big and heavey stuff out of the way to get them out.

 

[Cat_Rebel]

Silicone that's what we used.