TM 9-2520-246-34-1 d. Accessory Drive (Model WND-7-28). FRAME 1 1. 2. 3. 4. Pull shifter shaft (1) all the way out. Push shifter shaft (2) all the way in. Turn input gear (3). Accessory drive If accessory drive output shaft (4) output shaft (4) should turn. does not turn, do the following: a. Remove and disassemble accessory drive. Refer to para 2-25, frames 4, 5, and 6. b. Assemble and replace accessory drive. Refer to para 2-30, frames 12, 13, and 14. END OF TASK 2-345