Welcome to GTTalk.
Looking at the picture you posted there does not appear to be any clearance between the rear clutch flange that the release bearing is attached to and the brake plate. As stated there are adjustments that can be made and the specs are in the Service Manuals. If you check out post # 122 of this thread on my 1053 ( should be the same clutch setup) it shows pictures of the positions of the various parts when the clutch pedal is released (first picture) and when the clutch pedal is pressed down (second picture).
If you go back a few posts you can see pictures of the various pieces that make up the clutch. As you press the clutch pedal down the rear clutch hub should slide back on the splines on the driveshaft and separate away from the friction material on the rear of the clutch pulley. There are two needle bearings inside the clutch pulley that should allow the pulley to turn on a sleeve on the driveshaft so that the driveshaft stops turning. As you continue to press down on the clutch pedal the rear hub should come in contact with the brake plate so that the driveshaft stops turning and at the same time there is a brake arm that should be contacting the brake drum on the front of the transmission to stop the output shaft of the transmission from turning (Pictures 3 and 4). As stated there is an adjustment procedure in the manuals. Sometimes if a tractor has sat for a period of time the rear hub will become partially seized on the splines on the driveshaft and it will not slide back away from the pulley or the pulley can become stuck to the friction material which will not allow the clutch to release. With the engine shut off you can push down on the clutch pedal and gently insert a flat screwdriver between the friction discs that are glued to the pulley and the front and rear flange to get them to release if this is the case. The owners manual suggest putting oil on the driveshaft splines and brake linkage movement points on a regular basis when you grease the tractor. I would also suggest that you check the clutch linkage for points of wear and also check the condition of the release bearing and the front driveshaft support bearing for wear or being partially seized.
Hope this helps you with your problem.
Edited by 29 Chev, February 13, 2018 - 09:31 AM.