TM 9-2520-246-34 CHAPTER 2 DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE INSTRUCTIONS Section I. REPAIR PARTS, SPECIAL TOOLS, AND EQUIPMENT 2-1. General. Tools, equipment, and repair parts, over and above those available to the using organization, are supplied to direct support and general support maintenance shops for maintaining, repairing, and/ or rebuilding the material. 2-2. Repair Parts. Repair parts required for the maintenance of the transmissions, transfers, and power takeoffs are listed in TM 9-2520-246-34P, which is the authority for requesting or ordering replacement parts. 2-3. Special Tools and Equipment. The special tools and equipment, tabulated in table 2-1, are listed and illustrated in TM 9-2520-246-34P which is the authority for requisitioning. Table 2-1 lists only the special tools and equipment necessary to perform the direct support, general support, and field maintenance operations described in this technical manual. Table 2- 1 is included for information purposes only, and is not to be used as a basis for requisitioning. 2-4. Common Tools and Equipment. Standard and commonly used tools having general application to this material are listed in DA Supply Manuals SC 4910-95-CL-A01, A02, A50, A63, A64, A65, A67, A68, A69, A72, A73, and A74, SC 5180-90-CL-N23, SC 4910-95-CL-A31 and A32. Section Il. TROUBLESHOOTING 2-5. General. a. Purpose. The information in this section is for the use of support personnel in conjunction with, and supplemental to the troubleshooting section in the pertinent Organizational Maintenance Manual (TM 9- 2320-209-20/1). This information therefore provides the continuation of instructions in the Organizational Manual wherein a reference is made to direct support and general support maintenance personnel for corrective action. b. Operation. Operation of a transmission, transfer, or power takeoff without a preliminary examination can cause further damage to the components and possible injury to personnel. Required inspection and troubleshooting will eliminate further damage to equipment and injury to personnel. Causes of faulty operation in a unit or component can often be determined without extensive disassembly. c. lnspection. Inspection after the component is removed from the vehicle is performed to verify the diagnosis made while the component was installed in the vehicle, to uncover further defects or to determine malfunctions if the unit or component alone is received by the support organization. This inspection is particularly important in the final case because it is often the only means of determining the malfunction without completely disassembling the component. Refer to Chapter 2, section III for general cleaning, inspection, and repair procedures. 2-6. Introductory Information. a. This section contains troubleshooting information for locating and correcting most of the operating troubles which may develop in the transmission models 3052 and 3053A, transfer models T-136-27 and T-136-21, and power takeoff models WN-7-28, WND-7-28, and P-136-C. Each malfunction for an individual component unit or system is followed by a list of tests or inspections which will help you to determine corrective actions to take. You should perform the tests/inspections and corrective actions in the order listed. b. This manual cannot list all malfunctions that may occur, nor all tests or inspections and corrective actions. If a malfunction is not listed or is not corrected by listed corrective actions, notify your supervisor. c. The table lists the common malfunctions which you may find during the maintenance of the transmission models 3052 and 3053A, transfer models T-136-21 and T-136-27, and power takeoff models WN-7-28, WND-7-28, and P-136-C or their components. You should perform the tests/inspections and corrective actions in the order listed. 2-1