Kifco T40x1320 380,540 - 400,110 Operator Manual - Manual (Page 34)

35
--Maintenance & Adjustment--
Installing Polyethylene Tube Fittings
Danger! Installing fittings or repairing polyethylene tube used on
your Water-Reel is hazardous! The tube has a shape memory from
being coiled on a reel and will coil back with great force as the tube
is released from one end or severed. This condition poses a
serious hazard to personnel and/or property. The tube must be
properly restrained anytime the tube or the tube fittings are being
repaired or replaced.
The fittings used on the ends of the polyethylene tube are made to screw into the tube
much the same way as a field repair of a hydraulic hose. A threaded insert screws into the
inside of the tube while an outer sleeve keeps the tube from enlarging as the insert is
installed. This provides a watertight seal and a secure grip on the tube for dragging.
Cutaway of Installed Sprinkler Cart Fitting
The following steps should be followed when installing fittings:
1. Secure the end of the tube by fastening it to a tractor or other heavy object. Cut
the tube. Make sure the cut on the end of the tube is square.
2. Chamfer the inside of the tube by using a sharp knife, wood rasp or a reamer.
Reamers are available for tubes 2.5 inch I.D. through 4.5 inch I.D. Your dealer
may have a reamer that you may rent or buy. The tube should be chamfered
evenly until approximately ¼ of the threaded portion of the fitting can be freely
pushed into the tube by hand without turning.
3. Before putting the sleeve on the outside of the tube, screw the threaded portion
of the fitting into the tube. Take care to keep the fitting and the tube aligned
while threading. This process cuts a partial thread in the tube which makes it
easier to keep the fitting straight during the final installation. Remove the fitting.