PROBLEM ANALYSIS GUIDE - CONT - TM-5-3820-256-24-5

PROBLEM ANALYSIS GUIDE - CONT - TM-5-3820-256-24-5_154

TM-5-3820-256-24-5 Drilling System Well Rotary Truck Mounted Air Transportable 600 Feet Capacity Model LP-12 NSN 3820-01-246-4276 Manual
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SERVICE MANUAL INTRODUCTION Introduction 6. High vacuum restriction on low pressure fuel system caused by... a. fuel hose collapse b. incorrectly drilled connectors c. or foreign material in the fuel tank 7. Defective... a. fuel supply pump b. fuel return valve 8. High crankcase pressure caused by... a. Plugged crankcase breather element. b. worn piston ring sleeves c. leaking cylinder head gasket d. restricted air induction system e. or exceeding oil pan fill capacity 9. Defective... a. injection pump (under fueling) b. small l.D. fuel inlet supply line c. or improperly adjusted injection pump fuel modulator (Aneroid) d. or improperly adjusted injection pump fuel shut off cable 10. Defective, misadjusted or worn clutch resulting in slipping. 11. Torque converter slipping, high converter stall speed. 12. Excessive main hydraulic pressure causing low full stall speed. PROBLEM: HIGH INTAKE MANIFOLD PRESSURE (EXCESSIVE FUEL CONSUMPTION) REASON OR CAUSE: 1. Overfueling of engine caused by defective or misadjusted fuel injection pump. 2. Incorrect turbine housing (incorrect A/R ratio) or incorrect nozzle ring, small vane gap. 3. Incorrect nozzles - orifice size larger than specified for application. CGES-185-3 PRINTED IN UNITED STATES OF AMERICA Page 39

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