1968 Evinrude 6hp - Gearcase Seal - Marred Prop Seal Housing

[JohnnyGuy]

Hey all,

So I'm not REALLY experienced with gearcase resealing, this is only my second one I've had to complete.
I had a leak at the shift rod on the gearcase of this '68 6hp, so I just ordered a new gearcase reseal kit from sierra and redid all of the seals.
Well, while removing the prop shaft seal, I marred the surface of the housing with the seal remover I was using. When I put the gearcase back together, it was definitely leaking air during pressure test in the marred area, so I purchased a new prop shaft seal and took the gearcase back apart and l removed the new one I just put in. While I did put some 3M 837 around the perimeter of the inside of the housing before installing the seal I'm wondering if I should have done more, or maybe I completely messed the housing and I should just look for a new one. At $25/prop shaft seal I don't want to keep messing this up.
So before I go and make the same mistake again I thought I'd ask for the opinions/advice of some of you guys here who are much more experienced with this than I am.
Photos of the seal housing after I removed the one I put in yesterday that was leaking between the outside of the seal and the seal housing, attached.

TIA

JG

 

[tphoyt]

If it were me I would clean up the high areas of the marring back fill the low spots with JB Weld and sand back to a smooth surface.
I can’t say for sure it will work but that’s where I would start.
Best of luck.

 

[F_R]

Locktite thread sealant. Pgs 23,24

http://www.useloctite.com/downloads/187533_loctite_guide_book_updated.pdf#:~:text=Apply%20a%20thin%20coating%20of%20LOCTITE%C2%AE%20Thread%20Sealant,NOTE%3A%20Primer%20is%20not%20required%20for%20brass%20parts.

 

[racerone]

Looks like the bushing for propshaft is damaged as well.----I would look for a new seal housing.----Lots of those around.----Did you file bumps around the drive pin hole before you hammered the bearing housing off the shaft ?

 

[JohnnyGuy]

Looks like the bushing for propshaft is damaged as well.----I would look for a new seal housing.----Lots of those around.----Did you file bumps around the drive pin hole before you hammered the bearing housing off the shaft ?

Around where the prop pin goes, no I didn't.
Though it came of without me having to hammer it off the prop shaft.

 

[JohnnyGuy]

Locktite thread sealant. Pgs 23,24

http://www.useloctite.com/downloads/187533_loctite_guide_book_updated.pdf#:~:text=Apply%20a%20thin%20coating%20of%20LOCTITE%C2%AE%20Thread%20Sealant,NOTE%3A%20Primer%20is%20not%20required%20for%20brass%20parts.

I did the ID of the housing with the 3M 847.
What would be the difference with the Loctite 243?

 

[JohnnyGuy]

I filed down the high of the marring.
The new seal installs ALMOST all the way by hand and (with some wiggling) comes back out by hand.

 

[racerone]

You need to replace that bearing housing !!

 

[JohnnyGuy]

You need to replace that bearing housing !!

Yeah that's what I figured, dangit...

Still curious about the Loctite 243...

 

[racerone]

Part # of the seal you are installing?

 

[JohnnyGuy]

Part # of the seal you are installing?

Sierra 18-2023 it's supposed to be the equivalent of OMC 313282.

My brother has a 59 10hp parts motor.
I noticed one of the websites I use for parts lookup has the prop housing part number for my '68 (382291), noted beside the prop housing part number for his '59 (277812), not sure if they would be interchangeable? It looks like his prop shaft bearing housing uses a different seal...

 

[racerone]

the 59 housing would fit.----Along with the seal for a 59 model 10 HP.

 

[JohnnyGuy]

the 59 housing would fit.----Along with the seal for a 59 model 10 HP.

Thanks.
Is there a better way to remove these seals?
I was using a seal puller similar to a Lisle 56750, or do I just need to be more careful?

 

[racerone]

dremel tool.----Cut on 2 sides and seal might fall out.----Factory had special tools to remove seals.

 

[JohnnyGuy]

dremel tool.----Cut on 2 sides and seal might fall out.----Factory had special tools to remove seals.

Thank you.