TM 5-3825-225-14&PSection II. DIRECT SUPPORT AND GENERAL SUPPORTTROUBLESHOOTING PROCEDURES5-2. GENERAL.a. This section contains the troubleshooting procedures for direct and general support maintenance personnel.b. Possible water distributor malfunctions are listed in the troubleshooting Symptom Index (see paragraph 5-3).The Troubleshooting Table (Table 5-1) lists the malfunction, the probable cause, and the corrective actionto be taken.c. Before performing direct support and general support troubleshooting, ensure that all applicable unittroubleshooting has been performed.5-3. TROUBLESHOOTING SYMPTOM INDEXTroubleshootingProcedurePageEngine Fails To Crank........................................................................................................................ 5-2Engine Cranks But Does Not Start..................................................................................................... 5-2Engine Does Not Develop Full Power................................................................................................. 5-3Exhaust Is Smoky .............................................................................................................................. 5-3Oil Pressure Is Lost............................................................................................................................ 5-4Engine Overheats.............................................................................................................................. 5-4Water Distributor Pump Will Not Prime .............................................................................................. 5-4Water Leaks Around Pump Shaft....................................................................................................... 5-4Pump Has Low Operating Pressure and Weak Spray......................................................................... 5-4Pump Will Not Hold a Prime .............................................................................................................. 5-4Table 5-1. Direct Support and General Support Troubleshooting.MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION1. ENGINE FAILS TO CRANK.Check for internal seizure.Replace any damaged parts or components. Replace the entire engine as necessary.2. ENGINE CRANKS BUT DOES NOT START.CAUTIONAir must be bled from the fuel system whenever any part between the fuel tankand the injector pump has been disconnected or when the system has beenemptied of fuel. Failure to follow this caution may result in damage to equipment.Step 1. Check the operation of the fuel injector pump. Disconnect the high pressure fuel lines one at a timeand crank engine. A well defined spurt of fuel should flow from each fuel line fitting.If fuel does not flow from one or all of the fuel line fittings, replace the fuel injector pump (seeparagraph 5-22).5-2
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