TM 9-2320-209-20-3-2 FRAME 4 1. Turn brake drum (1) until inspection hole (2) is at top of left brake lining. 2. Put 0.020-inch feeler gage in inspection hole (2) so it is between brake lining (3) and inside of brake drum (4). 3. Using 11/16-inch wrench, turn cam (5) to right until feeler gage just goes in easily and can be pulled out with drag. GO TO FRAME 5 13-66