Heat Exchanger end cap bolt washers - inside or outside?

[Set2sea]

Hello All,
I had my heat exchanger out for clean and painting. When I went to put her back together, I was questioning myself on whether the rubber sealing washers for the 3/8 bolts go on the inside of the plate or the outside. When I looked at the large rubber gasket between the HX body and end plate, there looked to be an indentation the size of the small screw washer so I put it there (on inside between gasket and HX body).
When I ran the engine for a quick start up, my attention went to a diesel leak at the injection pump bleed screw not the HX. Yesterday I noticed antifreeze under engine and I haven't had time to rerun and trace leak. Of course there is at least 4 other places for a coolant leak, just second guessing the bolt washer?

[KWKloeber]

Paul

http://www.pbase.com/mainecruising/heat_exchanger

-k

[Noah]

K- and how does that answer Paul's question?

[Ron Hill]

Noah /Paul : The "O" ring /gasket for the bolt goes on the inside.  Just like Ken's Web Site picture shows.

A thought

[rmbrown]

Inside being on the inside of the end cap and outside of gasket... Nice photo!

[Set2sea]

Paul

http://www.pbase.com/mainecruising/heat_exchanger

-k

Great, that's the way I installed. I have pulled the exchanger at least a couple of times before and this is the first time I have had a leak was why I was second guessing that washer. Again, I haven't taken a good look at the 4 hose connections, probably needing a tighten here or there.
Thanks -k

[KWKloeber]

Noah /Paul : The "O" ring /gasket for the bolt goes on the inside.  Just like Ken's Web Site picture shows.

A thought

Thanks to RC aka MaineSail aka Collins Marine aka Rod Collins photos.

[Noah]

Sorry, Ken.  I missed it labeled in the first photo!

[KWKloeber]