TM 9-2520-246-34 Figure 4-12. Bearing Covers and Case Plug. Remove the 18 capscrews, nuts, and lockwashers securing the case cover to the case. (See fig. 4-9.) Install puller screws in the two puller screw holes located in the flange of the case cover. If necessary, tap on the end of the input shaft and the end of the shifter shaft with a mallet. Lift the cover assembly from the case. Remove and discard the gasket. Remove the inner thrust washer from the input shaft. Remove the shifter shaft seal. k. Rear Output Shaft Assembly. With the case cover removed, lift the rear output shaft assembly from the transfer case. (See fig. 4-10.) l. Top Cover and Shelter Shaft. safety wire from the fork setscrew. Remove the setscrew, then remove the shifter shaft from the fork assembly. Check the breather assembly. Remove and clean or replace it, as necessary. m. Countershaft Rear Bearing Cover. NOTE During assembly, tighten countershaft rear bearing capscrews to 60-77 lb-ft torque. Use shims to obtain 0.002- to 0.005-inch end play. The shims are provided as a set. The part number for the set is 7521437; the part numbers for shim sizes are: NOTE Ordnance No. Thickness During assembly, use new gasket and 7521441 .003 ± .0005 install new safety wire. Tighten setscrew to 7521446 .005 ± .0005 90-118 lb-ft torque. 7521447 .010 ± .001 Remove the four capscrews and lockwashers Remove the four capscrews and securing top cover to the transfer case. (See fig. 4-11.) lockwashers securing the countershaft rear Remove the top cover and top cover gasket. Discard bearing cover to the transfer case. (See fig. the gasket. Remove the shifter shaft spring, plunger, 4-12.) Remove cover and rear bearing and ball. Using a pair of wire cutters, remove the shims. 4-6