IN THAT CASE...... there were 2 types of reel drive systems used on the electro 1440's (sn u050000 was the dividing line). the early electro models used a combination pump_valve assy, the later ones used a seperate valve to adjust the flow. Either way, sometimes the electric motor that works the valve goes bad. check to make sure the motor is getting power - if it is, possibly the motor is bad, or the sprocket is stripped out. below answers also apply if you have auto-reel-to ground option another possibility is that on some models, there was a reel speed sensor that senses the reel (you would have 2 electric hookups if you had this option, 3 if you had field tracker). is the sensor or wiring damaged on the headerIJ (same sensor is used for fan speed on the combine, you could swap sensors, and it should be 0.060" from the sprocket) and yet another possibility - does your MPH read out correctly on the tachIJ the auto reel control uses the same sensor.