TM-9-2815-220-34 Direct Support Manual for AVDS-1790-2C and AVDS-1790-2D Engines Download
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TM 9-2815-220-34 CHAPTER 2 DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE INSTRUCTIONS Section I. REPAIR PARTS, SPECIAL TOOLS AND EQUIPMENT 2·1. General Authorized repair parts for the engine are listed in TM 9-2815-220-34P, which is t.he authol'ity for re- quisitioning replacement parts. 2-2. Repair Parts a. Repair parts required for the maintenance of the engines are issued to supporting maintenance personnel for the replacement of parts which have been worn, broken or are otherwise uns erviceable, and for parts which have been salvaged and stocked for future use on repairable engines. b. Repair parts for engine installation or re- placement (attaching or associated exteal parts) are listed in organizational repair parts manuals. c. Repair parts for engine accessories are liste d in the following technical manuals: I (1 ) TM 9-2910-212-34&P-Pump, Fuel Metering and Distributing. (2) TM 9-2910-213-34-Pump, Fuel, Engine, Assembly (Models A VDS-1790-2C and AVDS- 1790-20 only). (3) TM 9-2920-252-34&?-Generator, Engine, Assembly (Model AVDS-1790-2C). (4) TM 9-2920-224-35-Generafor, Engine, Assembly (Model AVDS-1790-20 and AVDS- 1790-20R). (5) TM 9-2920-232-34-Starter, Engine, Elec- trical, Assembly. (6) TM 9-2990-205-34&P-Turbosupercharg- er, Engine, Assembly. (7) TM 9-2990-206-34&P-Turbosupercharg- er, Engine, Assembly. 2-3. Mandatory Replacement Parts To expedite repair and rebuild of the engines, it is- economically advantageous to replace certain parts rather than perform the required cleaning and inspection necessary to assure that the parts are suitable r contin ued use. Gaskets, packings, oil seals and other similar parts are always l'e- placed at engine rebuild. Refer to TM 9-2815-220- 34P for 100 percent replacement items. 2-4. Common Tools and Equipment Standard and commonly used tools and equipment having general application to the engines are au- thorized by tables of allowance (TA) and tables of organization and equipment (TOE). 2-5. Special Tools and Equipment The special tools and equipment listed in table 2-1 are necessary to perform the field maintenance and repair operations described in this manual. Refer to TM 9-2815-220-34P which is the authority for requisitioning special tools, kits, and equip- ment_ 2-6. Improvised Tools and Eq_ uipment The improvised tools iJJustrated in figures 2-1 through 2-3 apply only to Direct Support and GeneraJ Support. Principal dimensions are shown to enable maintenance personnel to fabricate tools locally if desired. These tools are of chief vaJue to maintenance organizations engaged in repairing a large number of identical components; however, these improvised tools are not available r issue. The improvised tools illustrated in figure 2-1 are used r compressing the advance unit cover inteal retain.hlg ring, lifting the front fan drive housing and clutch assembly, and turning- the engine (on Model AVDS- l 790-2DR only). The improvised tool illustrated in figures 2-l .2 through 2-1.5 is used to replace connecting rod bushiI1g- type bearings. The puller for removing the drive shaft half and/or the injection pump half of the fuel iJ1jection pump coupling is illustrated in figure 2-2. The improvised tool illustrated in figure 2-3 is used to remove tlie oil pressure regulating vaJve sleeve. Change 3 2·1