TM 9-2320-209-34-2-2 FRAME 3 WARNING 1. 2. 3. 4. Take off Take off Take off Take off Be sure that derrick tube is in cradle and that rack carrier nut is braced to keep boring case from turning when worm gear housing is taken off. This will avoid injury to personnel and damage to equipment. bracket (1). four nuts (2). vertical leveling worm gear drive housing (3). NOTE Note thickness of shim sets so that same thickness is put back. two shim sets (4). END OF TASK 17-612