Busted air/fuel screw stuck

[429bbf]

pmd send the base plate to me and ill take it out (free of charge ) i like a challenge once in a while. zip 82718

[Shark Racer]

Are there any good photo documents of how these early APT setups work? I'd love to see one...

[PMD1969]

I have yet to put any heat on the screw and base plate.  I have a MAPP torch I can use.  Anyone know how much heat the base plate can take.  I really do not want to FUBAR it up.

Marc

[429bbf]

marc id heat it up to at least 150 -200 . some of that loctite doesnt like to let go.heat the top and bottom evenly and dont hold it on to long.i put mine in 180 degree water and it didnt come loose so i took the torch and go it hotter im guessing close to 250 once i got it to move a little i melted wax on it and it came right out.

[429bbf]

shark answer to your question . my camera broke or id take photos. best way to explain it is like this. have you ever mounted anything on a sheet rock wall?you drill a hole and insert a plastic piece and then you put in the screw and the screw spreads the plastic open so it wont pull out.works the same way. the screw spreads a steel  (y )looking piece which spreads and raises the power valve which has a little rod protruding out the bottom of it.ill post some pics when i get my camera fixed.fwiw

[Shark Racer]

Neat. Looking forward to it.

Thanks for the explanation!

Do all the 4Ms have this setup or just a few?

[PMD1969]

Well... it hs been a while and I have tried putting some MAPP heat to the affect screw.  No dice.  I heated it up and run some wax in it.  Then tried to clean it out reheat and put some PB in overnight.  Then tried to cut slot down the middle and used a small flathead to turn it.  Broke that.