Patio door wheel removal and replacement

Hello there. It like you have a Capitol Sliding Glass Door. To remove the roller, lay the door down like you did in the photo. Unscrew both bottom hex screws. Then, with a block of wood and hammer, carefully knock off the bottom door rail from the glass. Now you can slide out the roller assembly and compare yours to ours. Chances are you will need 81-007; this roller was very poplar for this particular door. But only comparing the dimensions will confirm. 

Thanks for responding. Looks like you have our 81-083 roller assembly, with the 1-1/8" wheel. Please compare and see if you agree.