ptsg
Super Member
Some times the manufacturers cast the displacement number on the engine block. Can either be 3.1L (550) or 3.5L (640).
I don't know for sure. I know they were one of the best tractors at the time. And they still very desirable here in my country. Specially the 640DT (4WD).
From the pictures, the 640 uses two filters on the right side of the engine. While the 550 uses just one as you have.
I don't know for sure. I know they were one of the best tractors at the time. And they still very desirable here in my country. Specially the 640DT (4WD).
From the pictures, the 640 uses two filters on the right side of the engine. While the 550 uses just one as you have.