TM 5-3805-258-24-1T R O U B L E S H O O T I N GT E S T I N G A N D A D J U S T I N G1. ENGINE CRANKSHAFT WILL NOT TURN WHEN START SWITCH IS ONCauseCorrectionBattery Has Low OutputMake Reference to Item 26.Wiring or Switches Have DefectMake Reference to Item 26.Starter Motor Solenoid HasMake Reference to Item 25.A DefectStarter Motor Has A DefectMake Reference to Item 25.Inside Problem Prevents EngineIf the crankshaft can not be turned after disconnecting the drivenCrankshaft From Turningequipment, remove the fuel nozzles and check for fluid in the cy-linders while turning the crankshaft. If fluid in the cylinders is not theproblem, the engine must be disassembled to check for other insideproblems. Some of these inside problems are bearing seizure, pistonseizure, or wrong pistons installed in the engine.CauseSlow Cranking SpeedNo Fuel In The Housing For TheFuel Injection PumpsDirty Fuel FilterDirty or Broken Fuel LinesNo Fuel To CylindersBad Quality FuelFuel Has “Cloud Point” HigherThan Atmospheric Temperature(“Cloud Point” = TemperatureWhich Makes Wax Form In Fuel.)Wrong Fuel Injection TimingOver Fueling Spring Not Installed2. ENGINE WILL NOT STARTCorrectionMake Reference to Item 26.Fill the housing for the fuel injection pumps with fuel with thepriming pump. Remove the air with the bleed valve.Install new fuel filter.Clean or install new fuel lines as necessary.Put fuel in fuel tank. “Prime” (remove the air and/or low quality fuelfrom the fuel system).Remove the fuel from the fuel tank. Install a new fuel filter element.Put a good grade of clean fuel in the fuel tank.Drain the fuel tank lines, and fuel injection pump housing. Changethe fuel filter. Fill the tank with fuel which has the correct “cloudpoint” and remove the air from the system with the priming pumpand bleed valve.Make adjustment to timing.Install over fueling spring.4-84
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
