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 Section IV. REPAIR OF CRANKCASE ASSEMBLY 3-42. General a. This section covers the repair of the crankcase assembly which consists of those parts that are machined with the crankcase. '!'hey include main bearing caps, oil seal housing, oil seal housing cap, and oil seal housing support. Specific instructions on disassembly, cleaning, inspection, repair and assembly accompany the repair operations. Repair standards of individual components follow the in- spection procedures. Stud identification tables are included where applicable. b. The engine name plate (fig. 3-144), located on the right side of the crankcase, contains the engine serial number, model, fuel and oil specification. Any modifications to this information or addition of repair and modification kit data must be incor- porated either on the engine name plate or on a modification tag mounted on a designated location elsewhere on the engine. . Disassembly . Remove four main oil gallery pipe plugs (1, fig. 3-145), and one pipe plug (2) from inside of crank- case. Remove two pipe plugs (1, fig. 3-146) in the damper end of crankcase. Remove five pipe plugs (3) from crankcase oil gallery along the right side of I crankcase. Remove two pipe plugs (2). NOTE Model A VDS-1790-2DR has four pipe plugs (3, fig. 3-146) in the main oil gallery. b. Remove.four bolts and flat washers attaching crankcase to engine overhaul stand. Attach a rope sling (fig. 3-14 , with weight equally balanced, and remove crankcase from stand. 3-44. Cleaning a. Refer to paragraph 3-36 for general instruc- tions on cleaning the crankcase. Thoroughly clean I crankcase oil passages (fig. 3-148) using compres- sed afr and brass wire probes. FigureS-144. E11gine nanto plate. I Pipe plug 2 Pipe plug Figure S· 145. Removing or insl«lli ll pipe plugs. TA02l806 Change 3 3·65