TM 55-1520-240-23-5 6-19 INSTALL NO. 7 DRIVE SHAFT 6-19 INITIAL SETUP Applicable Configurations: All Tools: Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692 Torque Wrench, 30-150 Inch-Pounds Torque Wrench, 700-1600 Inch-Pounds Materials: Oil (E254/E254.1) Personnel Required: CH-47 Helicopter Repairer (2) Inspector References: TM 55-1520-240-23P Equipment Condition: Align Forward Drive Shafting (Task 6-20) Install Combining Transmission Forward Adapter Assembly (Task 6-9) General Safety Instructions: WARNING Oil (E254/E254.1) is a skin irritant.  If oil gets on skin, wash thoroughly. If oil soaks into clothes, change clothes immediately. WARNING Oil (E254/E254.1) gives off fumes that can cause injury to personnel. Use oil in a well-ventilated area. NOTE Do not disturb alignment of installed adapter assembly and shaft.  This keeps forward and aft rotor blades in phase. 1. With aid of helper, position shaft (1) between combining transmission adapter assembly (2) and No.  6 drive shaft (3). 6-58 Change 1