TM 9-2320-209-10-1 (2) Installing 20-inch or 30-inch auger onto rack bar. FRAME 6 1. Place the derrick (1) in 45° position. (Refer to para 4-15c.) 2. Align the rack bar (2) with the auger (3). 3. Put rubber bumper (4) and spring (5) onto rack bar (2). 4. Move feed control lever (6) forward to lower rack bar (2) into auger (3). 5. Make auger (3) fast with pin (7) and cotter pin (8). 6. Stop engine. (Refer to para 4-6e.) 4-336