Hi, I'm not sure how your blade is hooked up as I only see 2 hoses on you machine and wonder if the bed hoses are bypassed underneath - if the bed hoses are the same on the 1100?? My experience is with a 900 . When I used my weed wiper with hydraulic cylinders on my RTV 900,, I would remove the quick disconnect hyd hoses that went to the dump bed. Then I hooked up the wiper hoses to those quick disconnect ports. When I got done with the wiper, I removed the hoses and put the dump bed hoses back on. I marked mine so I'd know which ones went where. Be sure to use those covers hanging down when done they help keep the ends clean. It could be you just disconnect them on the 1100. I live in the deep south so not familiar with this plow sit up. nor the 1100 configuration.
Those quick disconnects can get grit and dirt under them and get stiff. The way I did it is to use a lot of wd 40 or that type spray , and spray with the little red hose all around the quick disconnect where it's supposed to move . Try to rotate, use a little air to gently blow in the crevice, wiggle again spray again , air, repeat ..and you should be able to eventually get it to move. Also make sure there is no pressure on the hyd system . such as dropping the blade and working the lever after the engine is off . I dont remember if there is a safety notch on these connections with a little nipple that needs to be lined up with a notch but it could be.. there are on our skid steer . bordercollie