Acme Nut Whiffle Tree Assembly.
The whiffle tree is the threaded rod mounted in the bottom of the pop up. A drawbar runs up and down the rod, and pulls or release the lift cables.
Plastic delrin nut / acme screw whiffle tree. Your original Coleman or Fleetwood whiffle tree may have a white plastic nut at the center of the drawbar.
There were two types of whiffle trees used. Ball bearing and plastic delrin nut. This style of plastic nut tree is more commonly found on smaller units.
This particular whiffle tree is commonly found on pop ups that do not use a crank assembly. The crank handle accepts directly to the this tree via pin part number 4720X1481 found here.
Measures 28-3/4 inches in total length. 21-1/4 inches between the pre set stops.
Travel: 1 inch of travel equals 3 inches of lift height.
Installation and Maintenance Tip: Liberally grease the screw with a lithium grease. We recommend Gulf Super Duty grease (part number NLGI-1 or equivalent).
Part number 4737C5661