TM 55-1520-240-23-5 6-6 REMOVE COMBINING TRANSMISSION FORWARD ADAPTER ASSEMBLY 6-6 INITIAL SETUP Applicable Configurations: All Tools: Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692 Wood Dowel, 1 Inch x 18 Inches Materials: Cloth, Cleaning (E120) Dry Cleaning Solvent (E162) Gloves (E184.1) Goggles (E473) Personnel Required: CH-47 Helicopter Repairer Equipment Condition: Battery Disconnected Electrical Power Off Aft Pylon Access Doors Open (Task 2-2) Aft Pylon Lower Fairing Open (Task 2-2) No.  7 Drive Shaft Removed (Task 6-4) 1. Remove lockring (1) from retainer (2). 2. Place wood dowel (3) across nuts (4) as shown. Hold dowel to keep adapter assembly (5) from turning.  Remove retainer (2). 3. Remove adapter assembly (5) and retainer (6) from output shaft (7). WARNING Dry cleaning solvent is flammable and toxic.  It can irritate skin and cause burns.  Use only in well-ventilated areas, away from  heat and open flame. In case of contact, immediately flush skin or eyes with plenty of water for at least  15 minutes.  Get medical attention for eyes. 6-22 Change 1