gasket sealer?

[cottonplant]

I am in the process of rebuilding the geared part of the transmission in my cotton picker. It has shafts with gears that the end play is controlled with thin metal shims of various thickness stacked together under bearing caps. My question is what type of sealer would be good to use to keep these from leaking gear oil. The tech manual just says sealer. Thanks

 

[tim s]

In a place like that a thin coat of silicon would work well..

 

[Mike Aylward]

Tim, did you know that unless you get into the red, orange or black silicone that it is NOT oil resistant? The clear, white and blue that are commonly used WILL deteriorate next to oil or fuel. I was told this directly by a Loctite representative. I asked him what the difference was between the clear, white and blue and he smiled and said "only the color". He said the orange heat resistant kind had the best resistance to oil. Mike

 

[Kurt_JDB]

I have always had good luck with Indian Head gasket shellac.

Kurt

 

[Patsdeere]

Wouldn't you have to eliminate a shim or two to account for the thickness of the silicone?

 

[tim s]

Depends on how thin of a skim you put on, it don"t take much to make a seal, and it should squeeze out to near nothing..

 

[tim s]

I use the Ultra Black when I use silicon, On most applications for sealant I use "3M super weather strip adhesive"..it stays put better than silicon, but silicon is best in poor fit-ups like in some gear boxes and covers.

 

[cottonplant]

I was thinking about shellac, It looks like thats what the facory might have used when it was made.Silcone is a very good gasket sealer but in this instance the indian head shellac might be a little easer to use. Thanks

 

[Bob]

A THIN coat of anaerobic gasket maker/flange sealant works well.

<img src = "https://www.neverseezproductscart.com/shop/images/ana.jpg">

 

[DaveinNJ]

Permatex makes a RTV specific for gear oil applications.
Permatex Gear Oil RTV Sealer

 

[Hotflashjr]

I was having a problem sealing the steering box on my MT a few weeks back. I used JD's version of the Indian Head gasket shellac. I was able to get the tech sheet from my local dealer as to the thickness. I had to remove one of the thinest shims I had between the housing and cover. I put it on both the housing and cover as well as both sides of each shim. I had first cleaned everything in degreaser. I waited a 48 hours before adding oil. No leaks! I had been trying different things for about 2 months to get this leak to stop and this was the cure.

 

[J.Wondergem]

I also use the Permatex Anaerobic gasket maker, as Bob does. Seems to work real good.

 

[tim s]

There are a lot of good sealants available, the main thing is not to use too much and have the surfaces clean, I think it"s unsightly to see gasket sealer hanging out all over the place, plus there is usually that much on the "inside" ready to plug up oil screens and radiators....