ADJUSTMENT - TM-9-2350-256-20

CHAPTER 4 MAINTENANCE OF MAIN ENGINE FUEL, AIR INTAKE, AND EXHAUST SYSTEMS

TM-9-2350-256-20 Carrier Cargo Tracked 6-Ton M548A1 (2350-01-096-9356) M548A3 2350-01-369-6081 Manual
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CHAPTER 3: MAINTENANCE OF ENGINE TM 9-2350-256-20 3-14 ADJUST ENGINE IDLE SPEED Continued ADJUSTMENT' 1 With engine running and operating temperature normal (refer to TM 9-2350-256-10), loosen locknut (1) on idle speed adjusting screw (2). 2 Turn idle speed adjusting screw (2) clockwise to increase speed or counterclockwise to decrease speed. 3 Tighten locknut (1) after 675-725 revolutions per minute (rpm) is obtained. NOTE Follow-on maintenance: Install grille doors (see paragraph 9-57) 3-15 ADJUST ENGINE SOLENOID SPEED THIS TASK COVERS Adjustment INITIAL SET-UP Tools: Reference: Tool kit, general mechanic's (Appendix C, item 53) TM 9-2350-256-10 Personnel Required: Equipment Condition: 2 Grille doors removed (see paragraph 9-57) ADJUSTMENT CAUTION Do not allow engine to exceed 1800 rpm with power takeoff engaged. 1 With engine running and operating temperature normal (refer to TM 9-2350-256-10), loosen locknut (1) on solenoid speed control adjusting screw (2). Activate power takeoff and have assistant increase engine speed to 1800 rpm. 2 If 1800 rpm cannot be obtained when solenoid speed control adjusting screw (2) engages stop (3), turn adjusting screw counterclockwise to increase rpm. If adjusting screw has not engaged stop when 1800 rpm is obtained, turn adjusting screw clockwise until it engages stop. 3 Allow engine to return to idle speed, increase engine speed to 1800 rpm, and recheck adjustment. If adjustment is not correct, repeat step 2. 4 Tighten locknut (1) after correct rpm (1800 rpm at no load) is obtained. NOTE Follow-on maintenance: Install grille doors (see paragraph 9-57) 3-34

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