TM 9-2320-209-10-1 FRAME 3 NOTE Auger end of rack bar will tend to move away from boring case when derrick is raised. Raise auger rack bar from time to time to prevent it from hitting the ground. However, do not raise it high enough to compress the bumper spring against the boring case. 1. To raise derrick: (a) Move power leveler shifting handle (1) down. (b) Place feed control lever (2) in NEUTRAL position. (c) Move drive control lever (3) forward to raise derrick (4). (d) If rack bar (5) gets too close to ground, push feed control lever (2) forward to raise it. Let feed control lever come back to NEUTRAL position. (e) Hold drive control lever (3) in forward position until leveling bubble (6) is nearly centered. GO TO FRAME 4 4-317