TM 9-2320-209-10-3 CHAPTER REAR WINCH TROUBLESHOOTING 19 PROCEDURES, TRUCK M764 19-1. GENERAL. Detailed troubleshooting procedures for the rear winch, truck M764 are given in this chapter. 19-2. PROCEDURES . These troubleshooting procedures are used the same way as the sample troubleshooting procedure given in chapter 7. 19-1