Figure 4-36. Rear Output Exploded Shaft Disassembly — View. 37.) Place support bars beneath and press idler shaft high-speed TM 9-2520-246-34 the high-speed gear, gear and rear bearing from the shaft. Remove high-speed gear woodruff key. (3) Place the idler shaft assembly in an arbor press with low-speed gear and front bearing up. (See fig. 4-37.) Place support bars beneath the low-speed gear. Press idler shaft low-speed gear and front bearing from the idler shaft. Remove the low-speed gear woodruff key from the idler shaft. c. 4-23. Disassembly and Assembly of Subassemblies. a. Rear Output Shaft Assembly. NOTE Before pressing the gear and bearings on the rear shaft, coat the shaft with white lead pigment, Fed Spec TT-W-261C. When assembling the rear output shaft assembly, install parts separately so as not to damage the front and rear bearings. (1) Place rear output shaft assembly in an arbor press with front tapered roller bearing cone (fig. 4-36) up. Place support bars beneath the cone. Press the cone from the shaft. (2) Place the rear output shaft assembly in an arbor press with the rear output shaft gear up. (See fig. 4-36.) Place support bars beneath the rear output shaft gear and press the gear free of the shaft. Removal of the rear output shaft gear in this manner will also push the rear output shaft rear bearing from the shaft. Remove the woodruff key from the shaft. b. Idler Shaft Assembly. NOTE Before pressing the gears and bearings on the idler shaft, coat the shaft with white lead pigment, Fed Spec TT-W-261C. When assembling the idler shaft assembly, install parts separately so as not to damage front and rear bearings. Discard the old capscrew locking plate and replace it with a new one. (1) Using a suitable tool, bend the rear bearing and gear locking plate ears away from capscrews and remove the two capscrews, locking plate, and the rear bearing gear-lock. (See fig. 4-37.) (2) Place the idler shaft assembly in a press with the high speed gear and rear bearing up. (See fig. 4- Figure 4-37. Idler Shaft Disassembly — Exploded View. Input Shaft Assembly. NOTE Visually inspect synchronizer for broken, nicked, or worn gear teeth. If any of these conditions prevail, the synchronizer must be replaced. For replacement, use synchronizer part number 7346755. NOTE Before pressing the bearing into the gears, and the gears on the input shaft, coat all installation surfaces with white lead pigment, Fed Spec TT-W-261C. (1) Remove the shifter shaft fork from the synchronizer assembly. (See fig. 4-38.) (2) Remove the input shaft rear bearing snapring from the end of the input shaft. (See fig. 4-38.) Place the input shaft assembly in an arbor press with the rear bearing and high-speed gear up. Install a suitable puller around the input shaft high-speed gear and press the high-speed gear free from the shaft. Removal of high-speed gear in this manner will push the gear bearing spacer; gear bearing, thrust washer, and rear bearing from the input shaft. 4-25