Best RTV for Rear Axle Case

[My Kubota1]

Due to a small drip I will be removing the rear axle transmission cover which does not use a gasket, just RTV according to Kubota. It appers that it had been removed in the past and a white RTV used, brand unknown. Would be the best RTV to use?
Thank you

 

[North Idaho Wolfman]

You need to read the WSM (aka service manual) as some require an anaerobic gasket maker and not RTV.
Permatex 51813 anaerobic gasket maker is one

If you need to use RTV, permatex ultra grey or blue are my go to RTV sealers.

 

[My Kubota1]

You need to read the WSM (aka service manual) as some require an anaerobic gasket maker and not RTV.
Permatex 51813 anaerobic gasket maker is one

If you need to use RTV, permatex ultra grey or blue are my go to RTV sealers.

Thank you for the info. The reason I mentioned RVT the local dealer said that is what they use??? I will go with the Peratex 51813 you suggested.

 

[North Idaho Wolfman]

Thank you for the info. The reason I mentioned RVT the local dealer said that is what they use??? I will go with the Peratex 51813 you suggested.

NO, please reread what I wrote:
Read the WSM to find out what the factory called for, it will state if you use RTV or Anaerobic, I don't know off the top of my head.

What exact unit are you working on and I'll look it up.

 

[Nicksacco]

Also, having done this before, you definitely do not need to glop that stuff on those machined surfaces.
A fine line on the machined surface that does not - or barely peeks through when tightened is all that's needed.

Are you replacing Orings? Brake discs? Just curious...

 

[Runs With Scissors]

Also, having done this before, you definitely do not need to glop that stuff on those machined surfaces.
A fine line on the machined surface that does not - or barely peeks through when tightened is all that's needed.

Are you replacing Orings? Brake discs? Just curious...

Just to piggy-back on this....

After decades of replacing drain pans/differential gaskets and similar things,

I would respectively suggest that "over tightening" the bolts on these types of things is responsible for many, many "post service leaks".

I admit that I don't look up the torque values as I should, but I also don't "Gorilla Torque" them on.

There is a "happy medium" for sure, but tighter is not necessarily better.

 

[lugbolt]

Threebond 1211 or 1215, either one works

kubota sells it too but I cannot recall what the actual threebond number was on it. I keep thinking 1104 or 1211 but don't remember (used to be re-labeled and the label was easily peeled off to reveal what it actually was)

if in doubt use the kubota stuff.

one thing I did, and many techs and mechanics do not do, is let the stuff dry good, then go over it with some gray paint. Reason being, if you paint the joint where the sealant oozes out, the day you (or your spouse or whatever) sells it, the prospective buyer won't look at it and say "hey, who's been into the transmission and why"?--just makes for a more professional repair, IMO and is very easy to do.