If you have a competent shop that has a set of carb jet drills, the finest
one clears out the orifice perfectly.  It is smaller than a human hair.

Adam Puzerewski
81 westy
-----Original Message-----
From: David Beierl <dbeierl@IBM.NET>
To: vanagon@GERRY.VANAGON.COM <vanagon@GERRY.VANAGON.COM>
Date: Tuesday, May 09, 2000 6:03 AM
Subject: Re: [VANAGON] Non-cooling Fridge on Propane

>At 21:24 5/8/2000, W. Silva wrote:
>>fine on A/C and D/C though.  I called an RV shop that has a certified
>>Dometic tech and he said it sounds like a dirty burner orifice and
suggested
>>that we blow it out with compressed air and it should be ok.  We are ablut
>
>Considering the amount of trouble that orifice is to get to, I'd suggest
>something along these lines:
>
>1) open up the combustion chamber and observe the flame in the dark first,
>with particular attention to its height.
>
>2) If you have access to a stereo microscope, examine the orifice.
>
>3) Clean orifice with alcohol as instructed by Dometic, then blow out with
>compressed air ditto.  Do not touch the orifice with anything solid.  If
>you can't examine the orifice, repeat cleaning/blowing several times.
>
>4) Examine again if you have the scope, and repeat cleaning as
>necessary.  Someone on this list (Marshall Ruskin?) had to repeat the
>alcohol soak a ridiculous number of times before the orifice opened up.
>
>5) Install and once again observe the flame, comparing against your
>previous measurements.  If the flame is now twice as big or whatever,
>button it up in confidence that you've actually accomplished something.
>
>6) I've been using high-temp RTV very successfully to replace the silicone
>rubber combustion-chamber gasket that Bus Boys want $50 for...
>
>cheers
>david
>David Beierl - Providence, RI
>  http://pws.prserv.net/synergy/Vanagon/
>'84 Westy "Dutiful Passage"
>'85 GL "Poor Relation"