TM 9-2320-209-20-3-3 FRAME 3 1. Using 11/16-inch and 5/8-inch wrenches, unscrew and take off four nuts (1). 2. Hold rear drive shaft (2) so it does not fall. Take out four screws (3). 3. Using 1/8-inch allen wrench, loosen two screws (4). 4. Wipe shaft (2) clean behind bearing unit (5) and slide bearing unit back on shaft about 1 foot. GO TO FRAME 4 18-325