TM 9-2520-246-34 Figure 3-41. Shifter Shaft Cover. Figure 3-43. Removal of Poppet Balls and Springs. (5) Tighten the four setscrews securing the shift forks and actuating lug in position. (See fig. 3-42.) Install safety wire on the setscrew. Install the expansion plugs, using a hammer and suitable punch. (6) Tighten interlock safety nuts and bolts to 40- 50 lb-ft torque (See fig. 3-41.) Figure 3-42. Removal of Expansion Plugs, Setscrews, Shifter Shafts, Actuating Lug and Shifter Forks. b. Countershaft. (I) Install woodruff key in countershaft at fourth- speed gear position. Coat countershaft at fourth-speed gear bore with a light coating of grease, artillery and automotive (GAA), MIL-G-10924. Place assembly in press, aline fourth-speed gear slot with woodruff key and press the gear onto the countershaft. Secure gear in place with a new snapring. See figure 3-39 for positioning of the fourth-speed gear. NOTE Install fourth-speed gear with the collar of the gear facing toward the front of the countershaft. (2) Install woodruff key in countershaft at fifth- speed gear position. Coat countershaft and fifth-speed gear bore with a light coating of grease, artillery and automotive (GAA), MIL-G-10924. Place the countershaft and fifth-speed gear (countershaft drive gear) under the press, line up the woodruff key with the slot in the gear and press into position. Secure gear in place with a new snapring. See figure 3-38 for positioning of the fifth-speed gear. NOTE Install fifth-speed gear with the collar of the gear facing toward rear of the countershaft. Figure 3-44. Removal of Interlock Plate and Springs. 3-18