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Figure 3-32. Oil Pump Assembly Dimensions
Figure 3-33. Hydraulic Sump, Removal and Installation

TM-9-6115-464-34 Generator Set Diesel Engine Driven Tactical Skid Mtd 15 Kw 3 Phase 4 Wire 120/208 and 240/416 Volts Manual
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ARMY TM 9-6115-464-34 AIR FORCE TO 35C2-3-445-2 NAVY  NAVFAC  P-8-624-34 Section   V.   MAINTENANCE   OF   HYDRAULIC   SYSTEM (ELECTRO-HYDRAULIC    GOVERNOR    EQUIPPED    PRECISE    SETS    ONLY) 3-39.  GENERAL. The hydraulic system provides a means of precise frequency control on all MEP-103A and some MEP-113A precise generator sets. The system consists of a sump, a replaceable element type filter, a gear type positive displacement pump and a hydraulic actuator unit. The hydraulic pump draws oil from the sump and forces it through the filter. From the filter, the oil flows to the hydraulic actuator unit. An electrically controlled set of valves alters the path of the oil which determines the positioning of the governor control linkage. The position of the governor control linkage determines the fuel pump governor setting, which sets engine speed. Changes in engine speed causes a corresponding increase or decrease in generator output frequency. 3-40. HYDRAULIC SUMP. a. Removal. (1) Refer to the Operator and Unit Maintenance Manual and drain the hydraulic sump. (2)  Disconnect  hydraulic  lines  (1,  figure  3-33). (3) Remove nuts (2), Iockwashers (3) and screws (4) to remove hydraulic sump (5). (4) Remove cap and dipstick assembly (6) and elbows (7) from sump. Cleaning, Inspection, and Repair WARNING Solvent, Dry Cleaning P–D-680, Type II is flammable and moderately toxic to skin, eyes and respiratory tract. Eye and skin protection required. Good general ventilation is normally adequate. Failure to observe this warning could cause servere personal injury. WARNING Compressed air used for cleaning and drying purposes can create airborne particles that may enter the eyes. Pressure shall not exceed 30 psig and use only with adequate chip   guards   and   chipping   goggles.   Failure   to   observe   this   warning   could   cause servere  personal  injury. (1)  Clean all parts in solvent P-D-680 Type II and dry thoroughly with filtered compressed air. (2)  Flush interior of sump with an approved solvent and dry thoroughly. (3) Visually inspect hydraulic sump for cracked or broken welds, defective paint, illegible markings, and dents. (4) Inspect cap and dipstick assembly for corrosion, bent dipstick, and other damage. (5)  Check  all  threads  for  crossing,  stripping,  and  peening. 3-81







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