Catalina 34

General Activities => Main Message Board => Topic started by: Set2sea on June 05, 2018, 11:27:58 AM

Title: Heat Exchanger end cap bolt washers - inside or outside?
Post by: Set2sea on June 05, 2018, 11:27:58 AM
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?
Title: Re: Heat Exchanger end cap bolt washers - inside or outside?
Post by: KWKloeber on June 05, 2018, 11:43:41 AM
Paul

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

-k
Title: Re: Heat Exchanger end cap bolt washers - inside or outside?
Post by: Noah on June 05, 2018, 12:34:43 PM
K- and how does that answer Paul's question?
Title: Re: Heat Exchanger end cap bolt washers - inside or outside?
Post by: Ron Hill on June 05, 2018, 02:03:56 PM
Noah /Paul : The "O" ring /gasket for the bolt goes on the inside.  Just like Ken's Web Site picture shows.

A thought

Title: Re: Heat Exchanger end cap bolt washers - inside or outside?
Post by: rmbrown on June 05, 2018, 02:13:59 PM
Inside being on the inside of the end cap and outside of gasket... Nice photo!
Title: Re: Heat Exchanger end cap bolt washers - inside or outside?
Post by: Set2sea on June 05, 2018, 02:23:23 PM
Quote from: KWKloeber on June 05, 2018, 11:43:41 AM
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
Title: Re: Heat Exchanger end cap bolt washers - inside or outside?
Post by: KWKloeber on June 05, 2018, 02:32:53 PM
Quote from: Ron Hill on June 05, 2018, 02:03:56 PM
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.
Title: Re: Heat Exchanger end cap bolt washers - inside or outside?
Post by: Noah on June 05, 2018, 03:11:01 PM
Sorry, Ken.  I missed it labeled in the first photo!
Title: Re: Heat Exchanger end cap bolt washers - inside or outside?
Post by: KWKloeber on June 06, 2018, 11:53:19 AM
 :D