Do I install both seals?

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bigmoe

Seaman
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May 28, 2010
Messages
59
Im putting a new lower end seal kit in my Johnson 18hp fd-19. I pulled out the old seal below the waterpump and it was about twice the thickness of the new seals (Sierra). I measured and it looks like both seals would fit in. What should I do? Thanks.

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SparkieBoat

SparkieBoat

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Aug 17, 2009
Messages
3,643
Re: Do I install both seals?

yes..put the seals "back to back"..put the first seal in just like they are sitting in the pic...flip the second seal over and put it in...I use lots of grease around the seals and inbetween the seals.
 
B

bigmoe

Seaman
Joined
May 28, 2010
Messages
59
Re: Do I install both seals?

SparkieBoat said:
yes..put the seals "back to back"..put the first seal in just like they are sitting in the pic...flip the second seal over and put it in...I use lots of grease around the seals and inbetween the seals.
Click to expand...

Back to back thats interesting. Didnt think of that. Thank you!
 
lindy46

lindy46

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Nov 27, 2008
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Re: Do I install both seals?

The idea is one seal keeps the oil from leaking out, and the other keeps water from getting in.
 
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bigmoe

Seaman
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May 28, 2010
Messages
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Re: Do I install both seals?

Also what kind of sealant should I use when I put it back together?
 
lindy46

lindy46

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Re: Do I install both seals?

I use Permatex #2 on the skeg. I apply it in the groove where the spaghetti seal goes, then on top of the spaghetti seal. Also apply to the propshaft seal bushing, and on all the skeg bolts.
 
B

bigmoe

Seaman
Joined
May 28, 2010
Messages
59
Re: Do I install both seals?

lindy46 said:
I use Permatex #2 on the skeg. I apply it in the groove where the spaghetti seal goes, then on top of the spaghetti seal. Also apply to the propshaft seal bushing, and on all the skeg bolts.
Click to expand...

Thank you very much!
 
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