Paul,
           Went to my shed to photograph the actuator that is definitely
there according to young John, and cannot find anything that even looks
like one.  However the name of the brand is Thompson linear.  If
you google them it all comes up and you can get as confused as me.  John
said that the one on the harvester is about $600.00, but that is a big
capacity actuator.  Have a look as there is plenty to choose from.   Neil.


This will do it.

http://www.solidcomponents.com/company/?SCCC=SCCIR18EN&Lang=44&VisualID=22370

Built in limit switch. 12 Volt DC. 5 inches of travel.

Paul Lamar