11.FINAL REDUCTION/
   TRANSMISSION SYSTEM                                                            MXU 500 IRS

                                                    Primary Drive Shaft       Countershaft Assembly
 Apply clean engine oil to the countershaft
 assembly, driveshaft assembly and primary
 drive shaft.

 Install the primary drive shaft.
 Install the countershaft and drive shaft
 assemblies as a set into the left crankcase.




                                                       Drive shaft Assembly




 Apply clean engine oil to the shift cam, then
 install the shift cam.




                                                        Shift Cam




                                                    Lower Shift Fork      Upper Shift Fork
 Apply clean engine oil to the gearshift fork,
 sliding surface and gearshift fork pawl.

 Install the lower gearshift fork into the clutch
 dog (countershaft) and shift cam grooves with
 its "LDB5" mark facing down.

 Install the upper gearshift fork into the clutch
 dog (countershaft) and shift cam grooves with
 its "LDB5" mark facing up.




11-23