Undo the travel locks and set the cam lever to the roll-out position. Unroll the awning to 1 foot.
Locate the hole in each end cap where a cotter pin should fit. Turn the inside shaft until the hole in the shaft lines up with the hole in the end cap. Do this on each side. Insert a cotter pin and bend the ends to hold in it place. Repeat on the other end cap.
Have a helper hold the awning assembly for you. Remove the two lag bolts that are holding the awning rafter to the RV.
Set up two saw horses at each end of the awning. Remove the screws on each side of the awning rail that holds the awning fabric in place. Remove the awning assembly from the RV with a helper by walking the assembly away from the RV. Place the awning tube on the saw horses and the awning assembly on the ground.
Unroll the awning fabric completely. With a pencil, mark where the fabric lies on the awning tube. Slide the old fabric off the tube. Using the old fabric to protect the new fabric from the ground, slide the new fabric onto the awning tube, matching it up to the mark you made earlier. Be careful not to tear or rip the new fabric on the end caps.
Replace the awning arm on the end piece and bolt in place.
Have two people hold up the awning assembly while one person runs the fabric cord through the awning rail. Roll up the awning and secure travel locks.