MF 399 ac needs freon

[mmarvinn]

I have everything needed to put Freon in my MF tractor ac, but I need more know-how on what to do....steps, pressure etc.. Does anyone know of a place on the internet or on this forum that gives this info. I'm new to this site and I'm trying to get my hay baled in this Tx heat without an ac (I'm actually asking this for my husband at his request who is in the hay field as I type) I know the tractor is a Massey Furgeson, I think he said it is a 399. Any suggestions and or info is appreciated. I tried youtube, but couldn't find what I needed.

 

[justme23005]

If its like a typical automotive system, it should take R134A. Put it in the low pressure side (L on the little plastic cap) with the AC on & engine running, until there is about 28 pounds of pressure in the low side.

 

[MFIHCAT]

MF 399 could have been 12 or 134, depending on serial#. Could have been converted to 134, you should be able to tell by service ports or freon tester

 

[Sportsman762]

Please do not double post. I just responded to your thread in parts and repairs.

 

[mmarvinn]

Thanks everybody for the quick responses! It is all very helpful. I apologize Sportsman762 for my double posting. I saw your response on the general thread. Thanks for the info. I questioned myself after I initially posted and was not sure which place would be the best to post.

 

[Sportsman762]

Not a problem MM it can be a challenge to figure out where to post when your new to a site.