JHEnt
Guest
If your head has the connector with 3 flat pins in it then your head will have a very simple AHHC system. Basically on the RH side where the rod from the red ball runs down to the skid shoe there will be a second rod from the skid shoe area. This one is attached to a little lever. It will also have an adjustment turnbuckle in it. The lever rocks a plastic cam which in turn contacts a raise and a lower lever type microswitch. Really a simple system. Basically it works like this. You flip the switch in the cab marked auto heaeder hight to "on". This sends power as far as a push button switch mounted under the cab. The little lever in fron of the push button is tied with a small chain to the feederhouse. You must then manually begin to lower the feederhouse. When the feeder is low enough to pull the lever away from the push button power is sent to the head connector and to supply both head switches. The head will still be off the ground but the lower switch will be making a connection due to the flex sickle hanging at its lower position. (the red ball will be at the 4 area on the ball indicator when the head is off the ground)With the lower switch active power is sent to the electric solinoid valve mounted under the step platform on the cab. The operator can release the manual lever as the electric valve will now be lowering the head. When the head touches the ground the drop switch will be deactivated stopping further drop. As you drive when the sickle floats over a high hump it will activate the raise switch raising the head and back and forth between the raise and lower switches as you drive. When you want to raise you just pull the manual lever. The activation of any of the manual controls cuts the hydraulic pressure to the electric valve so the manual controls always have 1st control. Once you use AHHC you will wonder how you ever got along with just watching the ball fro head hight.