TM 9-2520-246-34 Figure 3-2. Transmission Models 3052 and 3053A Equipped With a Power Takeoff. (4) Second Speed Power Flow. Power is transmitted by the countershaft second-speed reverse- idler gear to the mainshaft second-speed gear, which is coupled to the mainshaft by the second-third gear synchronizer, and to the main shaft. (See fig. 3-12, view C.) (5) Third Speed Power Flow. Power is transmitted by the countershaft third-speed gear and to the mainshaft third-speed gear, which is coupled to the mainshaft by the second-third speed synchronizer, and through the mainshaft. (See fig. 3-12, view D). (6) Fourth Speed Power Flow. Power is transmitted by the countershaft fourth-speed gear through the mainshaft fourth-speed gear, which is coupled to the mainshaft by the fourth-fifth speed synchronizer, and to the mainshaft. (See fig. 3-12, view E.) (7) Fifth Speed Power Flow. Power is transmitted by the input gear, which is coupled to the mainshaft by the fourth-fifth speed synchronizer, directly to the mainshaft. Since the interlocking action of the synchronizer in effect makes one continuous shaft of the input shaft and mainshaft, the drive here is direct, i.e., a 1.00-1.00 ratio. (See fig. 3-12, view F.) 3-3. Data. National stock number . . . . . . . . . . 2520-00-347-4520 Ordnance number . . . . . . . . . . . . . . . . . . . . . . . 7520995 Make . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Spicer Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3052 Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Synchromesh Speeds: Forward . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Reverse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Gear types: Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Helical Mainshaft (except first-reverse) . . . . . . . . . Helical Mainshaft (first-reverse) . . . . . . . . . . . . . . . . . . Spur Countershaft (except first) . . . . . . . . . . . . . . Helical Countershaft first . . . . . . . . . . . . . . . . . . . . . . . Spur Reverse idler . . . . . . . . . . . . . . . . . . . . . Spur-helical Bearings: Input shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ball Mainshaft front . . . . . . . . . . . . . . . . . Straight roller Mainshaft rear . . . . . . . . . . . . . . . . . . . . . . . . Ball Countershaft front . . . . . . . . . . . . . . Straight roller Countershaft rear . . . . . . . . . . . . . . . . . . . . . . . . Ball Reverse idler . . . . . . . . . . . . . . . . . . . Straight roller Lubrication capacity: W/O pto . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8½ pt W/pto . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10½ pt Input shaft size: Spline diameter . . . . . . . . . . . . . . . . . . . . . . 1.499 in. Number of splines . . . . . . . . . . . . . . . . . . . . . . . 10 Full length of splines . . . . . . . . . . . . . . . . . 2.375 in. Mainshaft (output end) size: Spline diameter 1.499 in. . . . . . . . . . . . . . . . . . . . . . Number of splines . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Full length of splines . . . . . . . . . . . . . . . . . 1.906 in. Gear ratios: First speed . . . . . . . . . . . . . . . . . . . . . . . 7.55 to 1.00 Second speed . . . . . . . . . . . . . . . . . . . . . 4.18 to 1.00 Third speed . . . . . . . . . . . . . . . . . . . . . . 2.45 to 1.00 Fourth speed . . . . . . . . . . . . . . . . . . . . . 1.45 to 1.00 Fifth speed . . . . . . . . . . . . . . . . . . . . . . . 1.00 to 1.00 Reverse . . . . . . . . . . . . . . . . . . . . . . . . 7.36 to 1.00 3-2