Kickdown seal position?

[Mopewbie]

Sorry, but I'm lost now.
I was confident the seal would sit as image "B" but I removed a second one from another transmission and they were both installed as image "A".

So question is:

How should I install the kickdown seal?
Image A or B?

Thank you!

 

[Darrah]

Image A; I just did one last week.

 

[R/T Boy 67]

Image B for me.

 

[Mopewbie]

Image A; I just did one last week.

Thanks. That seems about right since it's the second one I found like that...

But why?
Aren't the lips always facing the "source" or oil?

 

[R/T Boy 67]

Yes, that seal is to keep oil in the transmission. Lip down, image B.

 

[Darrah]

Yes, that seal is to keep oil in the transmission. Lip down, image B.

Interesting. I agree seals typically have the lip face whatever you want to keep "in", so maybe mine was assembled wrong at some point in its life. Very possible, but as far as I recall, I think every 727 I've ever done has the seal positioned as in photo A. Maybe they went with orientation A as an exclusion seal to prevent contamination entering the trans?

 

[Doorkicker]

B... lip down.

 

[turbine68rt]

Groove facing up, flush with top.

 

[Mopewbie]

View attachment 1884986
Groove facing up, flush with top.

Can't argue with that.

But why?

 

[Mopewbie]

Maybe they went with orientation A as an exclusion seal to prevent contamination entering the trans?

That actually makes a lot of sense.

 

[turbine68rt]

That actually makes a lot of sense.

Similar to the rear seal with the outer lip facing out.

 

[R/T Boy 67]

There is a washer and a clip on top of the seal, I can't see any dirt getting in there, but I can see oil leaking out. I go with what I think is right, so I install them lip down. I have not worked on a lot of transmissions however.

 

[pnora]

Sorry, but I'm lost now.
I was confident the seal would sit as image "B" but I removed a second one from another transmission and they were both installed as image "A".

So question is:

How should I install the kickdown seal?
Image A or B?

Thank you!

View attachment 1884834

View attachment 1884835

A is the correct way it goes.