TM 9-2320-209-20-3-2 b. Removal. NOTE Air compressor pn M5407B has a tapered shaft with no key. Air compressor pn M5408D has a straight shaft with a key. 1. Open hood. Refer to TM 9-2320-209-10. 2. Using air compressor pulley wrench, hold pulley flange (1). Using 1 1/8- inch socket wrench, unscrew nut (2). 3. Using 9/16-inch socket wrench, loosen screws (3 and 4) until lockwashers (5 and 6) do not hold. 4. Using air compressor pulley wrench, unscrew pulley flange (1) until drive belt (7) is loose enough to take off. Take drive belt off pulley (8). 5. Using pulley puller, pull pulley (8) off shaft of compressor (9). GO TO FRAME 2 13-252