TM 9-2520-246-34 Section III. REPAIR (MODEL 3052) 3-7. General. a. Clean the exterior of the transmission in accordance with Chapter 2, section III of this manual. b. Refer to Chapter 2, section II of this manual for troubleshooting procedures. c. When a transmission is repaired, it must be disassembled completely so that the parts may be thoroughly cleaned and inspected for wear or damage. Refer to Chapter 2, section III of this manual for instructions on the repair and rebuilding of the transmissions. d. Disassembly is accomplished in two stages: first, disassembly into subassemblies; second, disassembly of the subassemblies. Always use separate containers for the parts of each subassembly. If more than one transmission is being rebuilt at the same time, provision must be made for keeping the parts of each transmission separate. This is especially important when some parts are to be used again. e. Disassembly of the transmission is accomplished by following logical step-by-step procedures. Paragraph 3-8 provides disassembly to the subassembly level, paragraph 3-9 provides the disassembly procedures from the subassembly level to the piece part. Assembly procedures are given only where special attention to a part or assembly is required or needed. The assembly of the transmission is the exact opposite of disassembly except where otherwise specified for clarity. Always use new gaskets and seals during assembly. 3-8. Disassembly of Transmission Into Subassemblies. a. Clutch Release Assembly. (1) Unhook the two support springs securing the release bearing support assembly to the clutch release yoke and remove from the input shaft bearing cap. (See fig. 3-16.) (2) Remove the two capscrews and lockwashers securing the clutch release yoke to the clutch shaft. (See fig. 3-16.) Partially slide the clutch release shaft through the clutch bell housing and remove the two yoke keys from the shaft. (See fig. 3-17.) Remove the clutch release yoke from the shaft and complete the removal of the clutch release shaft from the clutch housing. (3) Remove the five capscrews and lockwashers securing the clutch bell housing to the transmission Figure 3-16. Removal of Clutch Release Bearing Support Assembly. case. (See fig. 3-18.) Remove clutch bell housing gasket from the face of the transmission case. b. Shifter Shaft Cover. Position the transmission shifter shaft in neutral. Remove the eight capscrews and washers securing the shifter shaft cover, and lift straight up to clear transmission case; discard the cover gasket (See fig. 3-19.) NOTE When installing shifter shaft cover, position the shifter shaft in neutral and place the shifter forks in the mainshaft synchronizer grooves. (See fig. 3-20.) Figure 3-17. Removal of Clutch Release Yoke and Release Shaft. 3-11