Rebuilding a M50D-HD

[lowspeedpursuit]

Seems fine? -16A is supposed to be the 4.0 input shaft for all years '90-'11. I just looked at a random picture of an input shaft I have, and it's got the ridges between the dog teeth.

You have the M5OD-R1HD. M5OD-HD is an abbreviation, same as condensing the old one down to M5R1. They're both in the R1 family.
Did you get synchros? If not, it doesn't matter. If you did, the old synchro kit is -AWS. The HD kit is -BWS.

 

[MADMODDER]

Seems fine? -16A is supposed to be the 4.0 input shaft for all years '90-'11. I just looked at a random picture of an input shaft I have, and it's got the ridges between the dog teeth.

You have the M5OD-R1HD. M5OD-HD is an abbreviation, same as condensing the old one down to M5R1. They're both in the R1 family.
Did you get synchros? If not, it doesn't matter. If you did, the old synchro kit is -AWS. The HD kit is -BWS.

Thanks for the clarification.

I didn't get synchros be cause I was told mine are fine by the business I got my parts from. They were super knowledgeable and awesome.
After some exchage of specs and details. They told me, because of the fiber looking material on inside, I had special heavy duty synchros and they're pretty pricey and only available through Ford. But mine looked perfectly fine so they said I dont need them.

 

[MADMODDER]

I'll be reassembling my trans this week, hopefully.
I'm having a hard time finding what sealant I need for the back of the trans and the Tcase housing.

What would yall recommend for them?

 

[pjtoledo]

anerobic, cures without air.

Permatex® Anaerobic Gasket Maker, 50 ML - Permatex®

www.permatex.com

 

[Mechrick]

I'm having a hard time finding what sealant I need for the back of the trans and the Tcase housing

There should be seals in both the output of the transmission and the input of the transfer case. Ford will sometimes use a gasket to keep dirt out, but if it's a dry extension housing you technically don't need anything there.

 

[scotts90ranger]

Yeah, I usually just use the stock gasket or if that isn't available make one or just some ultra black but being a manual it's sealed on both sides so it doesn't really matter just put some grease on the splines before you assemble...

 

[MADMODDER]

I have the input and output shaft seals.
But the housing between the trans and Tcase (housing/case extension?) has sealant between it and the trans. And a paper looking gasket between it and the Tcase.
Should there not be any sealant?

 

[lowspeedpursuit]

Trans to tailhousing is just silicone gasket maker. Ford calls it "D6AZ-19562-BA". Motorcraft TA-32 / Permatex Ultrablack.

 

[Mechrick]

Should there not be any sealant?

There technically doesn't *need* to be anything between them, as long as there are seals in both.

Dodge used to have a problem where the transmission output shaft would leak (I've seen manufacturers incorrectly specify a dust seal similar to what you would use on a front hub assy to keep dirt out, seals are chosen by dimensions, but the direction of the lip matters). The extension housing would fill up with ATF over a long period of time, then push into the transfer case overfilling it.

This is why you will often see a groove cut into the bottom of the extension housing to prevent this from happening...

 

[MADMODDER]

I thought it was weird because there aren't any gears in that section.
But my Ranger is the onky real domestic experience I have.

So its not needed but it won't hurt.
I think I have some. If I do, I'll put it on but Im not going to buy any.


Thanks.

 

[MADMODDER]

Trans to tailhousing is just silicone gasket maker. Ford calls it "D6AZ-19562-BA". Motorcraft TA-32 / Permatex Ultrablack.

I think I have some.
Thanks.