Figure 4-27. Pressure Oil System

Section XI. 4-29. FUNCTION AND DESCRIPTION The diesel engine has pressure Iubrication to all working parts (see figure 4-27). The oil system includes oil intake cup, gear type oil pump, bypass valve, oil pressure gauge, low oil pressure shutoff, full-flow oil filter, oil coder, and passages to de- liver oil throughout the engine. Oil is held in the oil base, and forced through the oil filter and oil cooler by the pump. Lines leading to the rocker housing, passages through the block to crankshaft and front camshaft bearing, crankshaft passages to connecting rod bearings and connecting rod passages to piston pin bushings complete the oil system network The bypass valve controls oil pressure by allowtng excess oil to flow directly back to the crankcase. 4-30. OIL COOLER a. Inspect (see figure 4-28). On ASK equipped generators, remove ASK cover assembly (para 5-3). Inspect oil cooler (1) for physical damage. Visually check for leaks where oil cooler is connected to oil hoses (figure 4-29). Check that cooler Is securely fastened to mounting plate (2, figure 4-28) and that plate is securely fastened to engine. Inspect all hoses for Figure 4-26. Adjusting Starter Lockout Switch MAINTENANCE OF OIL SYSTEM

Figure 4-29. Replacing Oil Cooler Hoses

TM-5-6115-584-12 Generator Set Diesel Engine Driven Tactical Skid Mtd. 30 Kw 3 Phase 4 Wire 120/208 and 240/416 Volts Manual
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T M 5 - 6 1 1 5 - 5 8 4 - 12 N A V F A C P - 8 - 6 2 2 - 12 T O - 3 5 C 2 - 3 - 4 5 6 - 1 TM-05682C-12 On ASK equppied 4-31. LOW OIL PRESSURE SWITCH. generators, remove oil access door. a. Test on Equipment (see figure 4-30). Disconnect leads from terminals 1 and 2. With master switch in off position, use ohmmeter to check for continuity between terminals 1 and 2 of switch. If continuity is indicated, replace switch. Connect leads to switch terminals 1 and 2. b. Removal. Disconnect leads from terminals 1 and 2. Use wrench on square portion at base of switch (11) and remove from adapter (5). c. Bench Test. Connect switch to a controllable supp- ly of dry compressed air. Connect ohmmeter across ter- minals 1 and 2 and slowly apply compressed air. Switch should close (continuity) when 14 ± 2 psi of compressed air is applied. 4-34 Change 7 Figure 4-27. Pressure Oil System Figure 4-28. Oil Cooler Assembly

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