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 TA028616 Piyure·l. Rc111ovi11g clmi11 plug. drain at the oil pan drain plug opening. Do not loosen oil dl'ain valve adaptel'. d. After oil is drained from engine install oil vent capscrew in damper housing (fig. 3-3) and oil pan drain plug (fig. 3-2) in oil pan. I d. 1. Remove oil sampling drain cock (fig. 3-3) B on Model AVDS-l 790-2DR only. e. Close all openi ngs on the engine with water- proof tape or suitable plugs and thoroughly clean all ex tea l parts and outer surfaces. Make sure no reign material enters working parts of engi ne assembly. Wash engine using water under pressure to remove mud and dirt. Remove oil and grease using a st iff brush with dry clea ni ng solvent (PD-680). f. After engine has been thoroughly drained and cleaned, inspect exteal portion of engine to de- lerm ine leaks, broken or cracked areas, and missing parts. g. Visually inspect external components r bent, broken, or other damaged condition, and mark areas to serve as a guide in repair or replacement of such parts. 3-3. Remove Engine Accessories NOTE To permit the installation of engine on mounting brackets and mounting engine on the maintenance stand, certain acces- sories must be removed. 3-2 Change 3 a. Remove fuel supply pump, starter, generator, turbosupercharger, wiring harness, and powe1· takeoff drive housing as outlined in paragraphs 2-17, 2-17.1, 2-18, 2-19, 2-20, 2-20.1, 2-49, and 2-49.1 as applicable. NOTE Model AVDS-1790-2DR is not equipped with a wiring harness. b. Remove generator rear oil drain hose (fig. 34), elbow, check valve and nipple. Separate parts. I l OIL VENT CAPSCREW n OIL SAMPLING DRAIN COCK v Figure 3·3. Drai11i11g oil jilter housing and oil coolers. CHECK VALVE ELBOW � �_ y OIL DRAIN HOSE TA265668I Fitre .1.4. Removing011t and rear drain tubes a11d chk valve. ) )