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Diesel Engine Maintenance Training Manual

CONTENTS Chapter 1. Troubles: Their Symptoms and Their Causes A. General Trouble Shooting Procedure 1A1. Recognizing and locating troubles B. Engine Fails to Start 1B1. Engine will not crank but can be barred over 1B2. Engine cannot be cranked and cannot be 1B3. C. Unusual or Erratic Operation 1C1. 1C2. Engine stops suddenly 1C3. Engine overspeeds 1C4. Engine will not carry load (loss of power). 1C5. Engine will not shut off 1C6. 1C7. 1C8. Cylinder safety valves pop frequently during engine operation 1C9. Engine will not reach rated speed 1C10. Engine hunts (speed varies at constant throttle setting) D. Noises 1D1. Pounding 1D2. Knocking 1D3. Metallic clicking 1D4. Rattling E. Instruments — Pressure 1E1. Low lube oil pressure 1E2. High lube oil pressure 1E3. Low fuel oil pressure (in low-pressure fuel supply system) 1E4. Low cooling water pressure (fresh) 1E5. Low cooling water pressure (salt) 1E6. High cooling water pressure (salt) 1E7. Low compression pressure 1E8. Low firing pressure 6 1E9. High firing pressure 6 1E10. Low scavenging air receiver pressure (super-charged engine) 6 1E11. High exhaust back pressure 6 R Instruments — Temperature 1F1. Low lube oil temperature 6 1F2.

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