T-case question

[CEThomas]

What type of sealent / RTV do you use when you put your t-case together.

 

Blue, black, red, gray??

 

Thanks

 

Charles

[tjbliley]

I use black. Just personal preference.

[Oizarod115]

black, have used blue before though... started using black on everything since then (for no particular reason other than it says its better)

[CEThomas]

Black it is :D

 

Charles

[DirtyComanche]

Ultra black.

 

 

 

 

Because it's 'ultra'!

[Eagle]

The guy who used to run a Jeep & off-road shop down the road (he's now doing heavy equipment repair ... better money because the customers pay their bills ;) ) told me there's a special anaerobic sealant for that. I think I recall seeing confirmation in a FSM awhile ago. Plain old RTV may work but I don't think it's the right stuff.

[ROADLESS]

As Eagle mentioned, a special 'anaerobic' compound should be used for this type of repair. These type of sealer/gasket materials have certain properties so they 'cure' in the absence of air, and can be used on aluminum, steel, magnesium, and other metals.

 

Another benefit is that any excess sealant that squeezes out into interior of the case will dissolve with the lubricant i.e. transmission fluid and not clog and harm internal components :hmm: !

 

These are readily available at your local parts house. I know Permatex makes it, just look for 'anaerobic' on the package .

[CEThomas]

Thanks.

[mjcanoe]

CEThomas, might not matter now, but OEM used silicone (Mopar) which was just grey silicone available from local parts store. anaerobic sealers seal, but remain pliable, so they may work. have rebuilt many t/cases over the years on jeeps & always found silicone sealer from factory instalation. never had a leak w/ grey silicone at all. factory manual calls for a 3mm(1/8') bead on frt. half of case w/ dowel pins removed, then install dowels. every other need for sealer calls for silicone also. hope this helps.

 

mjcanoe

[ROADLESS]

CEThomas, might not matter now, but OEM used silicone (Mopar) which was just grey silicone available from local parts store. anaerobic sealers seal, but remain pliable, so they may work. have rebuilt many t/cases over the years on jeeps & always found silicone sealer from factory instalation. never had a leak w/ grey silicone at all. factory manual calls for a 3mm(1/8') bead on frt. half of case w/ dowel pins removed, then install dowels. every other need for sealer calls for silicone also. hope this helps.

 

mjcanoe

 

OK, it might not matter now, but it may sometime later and end up costing you another rebuild! How can this happen? Excess silicone (non-anaerobic) that may have been over applied will harden, but remain pliable. Then one day a piece(s) of it breaks off, plugs an oil passage to a bearing and without oil the bearing fails. I have seen this happen more than once :yes: !

 

That is why anaerobic silicone sealant is your friend. It only cures or sets up within the joint being sealed, where there is no air - hence the term anaerobic. As I stated in my earlier post, any excess (anaerobic) sealant that is 'squeezed out' will remain in a non-pliable 'fluid' state within the t-case and will not clog any passages :brows: .

 

To me, using ordinary silicone is just not worth the risk, especially when anaerobic silicone costs about the same as regular silicone and is usually on the same rack in the store!