mk2 yoke to din conversion

[lakewinni]

Does anyone know if the nut that you have to loosen to get off the yoke valve is a regular left hand to loosen nut. I've been cranking on this thing to get it off to put on a DIN fitting and its not moving at all. Anyone have any suggestions tips or hints?

Thanks a lot!

 

[redacted]

It is standard thread with a spec of about 22 ft-lb torque. But salt deposits can make it a real booger. When I get a tough one, I soak it for a day. Then I hit it with a hot water soak (100 + deg F) and then an ice cube on the nut to loosen it up and give it a try. If it doesn't let go after a couple hot-cold-try cycles, I soak it for another day. Sometime it takes the better part of a week.

Patience.

 

[DA Aquamaster]

It's a standard thread (lefty loosey, righty tighty).

If they get over torqued and then develop some salt encrustation, corrosion, etc, they can be a real bear to get loose.

You basically need to clamp it in a padded vise with a first stage tool (or in a pinch, a used threaded CO2 cartridge - do not use a full one - that is very dangerous) screwed into one of the LP ports to keep the first stage from turning. Then you need to just unscrew the yoke nut. A yoke nut socket is preferred as it spreads the load over 6 flats on the nut rather than just 2. If you use a wrench you need to use a large one with long enough jaws to fully engage the flats. That means a 12 to 15 inch cresent wrench.

Light taps on the wrench or breaker bar and socket can help loosen things, but go easy as you do not want to damage anything. Soaking in hot water or an ultrasound bath can also help loosen any corroision present.

Unless you already have a vice, very large adjustabel wrench or yoke nut socket and breaker bar, it's cheaper to have the conversion done by a shop.

 

[lakewinni]

Thanks for the tops guys I'll definitely try the hot water and cold water bath. I also am at college so I have access to all sorts of shops and tools so I'll go over and grab a good sized wrench and give it a try.

 

[divecon15]

it takes a thin walled socket made just for that purpose to get the nut off. I service MK2's all the time and they can be a real ***** to get off some times and that is when you have it in a vice with a tool screwed into a lp port. It is very important to use the right tools.
As far as soaking, I would not hold my breath. we put them in an utra-sonic cleaner with a cleaning solution and sometimes that does not even help. My best advive take it to your local SP dealer and they should change it for you of little or no $