6410 AC

[dwag]

90 degree day, high side press 350#, low side 30# evaporator temp 55 degrees. Condenser & radiator clear, how do U check fan clutch?

 

[RogerinIowa]

Evaporator clean? Fan on high? Drains open?
Pressures sound high... overcharged maybe..

 

[Greg_Ky]

At 90* pressures should be 50 and 260. Low is low and high is high check out the chart below
Poke here

 

[Tx Jim]

(quoted from post at 19:22:16 06/09/23) how do U check fan clutch?

After engine is at operating temp then stop engine & move fan blades by hand. There should be some resistance felt when turning fan blades. My 4255 has had fan lock kit installed on fan drive since shortly after I purchased it in '93

This post was edited by Tx Jim on 06/10/2023 at 02:25 pm.