Go to the Dometic website and find the Operator and Parts manuals for your awning. Find the part number for the needed parts, do a simple search for the p/n’s.
When you fully unroll your awning, there should be a label on the tube to help you identify the awning model number.
Be very, very careful if you plan to disassemble anything around the ends of that tube. Those shafts are spring loaded and there is a procedure for disassembly that needs to be strictly followed to prevent injury.
‘91 Ultrastar Champion‘02 Georgie Boy Landau 8.1l Workhorse
‘03 Jeep Wrangler TJ 2018 Jeep Wrangler JK toad