Finding the Right Troubleshooting Procedure

Locating the Correct Troubleshooting Procedure - TM-9-2350-261-20-1_194

HOW TO USE TROUBLESHOOTING (cont) - TM-9-2350-261-20-1_196

TM-9-2350-261-20-1 Carrier Personnel Full Tracked Armored M113A2 2350-01-068-4077 Carrier Command Post Light Tracked M577A2 2350-01-068-4089 Manual
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TM 9-2350-261-20-1 TROUBLESHOOTING SAMPLE The following sample takes you through a typical troubleshooting procedure. Finding the Right Troubleshooting Procedure A carrier arrives at the shop. The DA form 2404 shows that the engine cranks slowly. Engine cranks slowly is part of the carrier Engine System. Therefore, you lookup engine cranks slowly listed under Engine System in Troubleshooting Task Index, Section II, in this chapter. TM 9-2350-261-20-1 Section II. TROUBLESHOOTING TASK INDEX ENGINE SYSTEM Engine Overheats . . . . . . . . . . . . . . . . . . . . . ...3-10 Engine Overcools . . . . . . . . . . . . . . . . . . . . . . . ...3-14 Engine Does Not Crank . . . . . . . . . . . . . . ...3-15 Engine Cranks Slowly . . . . . . . . . . . . . . . . . ...3-25 Engine Cranks But Will Not Start ...3-30 Engine Cranks But Will Not Start Below 40° (Air Box Heater Is Used) ..3-34 Engine Runs Rough, Stab, Or Does Not Put Out Full Power . . . . . . . . . . . . . . ...3-44 Engine Oil Low Pressure Indicator Fails To Go Off After Engine Starts ..3-50 Engine Does Not Remain At Idle RPM With Suspension Lockout System Engaged (M741A1 Only) . . . . ...3-51 Engine Fuel System Schematic . . . . . . ...3-52 Starting System Schematic . . . . . . . . . . . ...3-53 Air Box Heater System Schematic ....3-54 CHARGING SYSTEM Transmission Oil Hi Temp Indicator Comes On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-71 No Exterior Lights Operate . . . . . . . . . . ...3-73 Blackout Drive Light Does Not Work .3-75 Service Headlight Do Not Operate . ..3-78 Infrared Headlight(s) Does Not operate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...3-83 Service And/Or Blackout Stop Lights Malfunction . . . . . . . . . . . . . . . . . . . . . ...3-89 Blackout Marker Light(a) And/Or Tail Light(s) Do Not Operate . . . . . . . . ...3-93 Service Tail Light Doss Not Operate .3-98 Trailer Lights Do Not Operate . . . . ...3-100 Horn Does Not Operate . . . . . . . . . . . . ...3-102 Instrument Panel Illumination Lights Malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-107 Dome Light(s) Work Improperly . . . ...3-110 Infrared Periscope Works Improperly 3-112 Radio(s) Does Not Work . . . . . . . . . . . . ...3-116 Charging System Malfunction . . . . . . ...3-55 Dome Lights Malfunction 100 Amp Engine Charging System (M577A2 Only) . . . . . . . . . . . . . . . . . . . . . . . . . . 3-117 Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-65 Right Rear Utility 200 Amp Engine Charging System Outlet/Admittance Buzzer Works Schematic 3-66 Improperly (M577A2 Only) . . . . . . . . . ...3-122 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 Amp Engine Charging System Left Rear Utility Outlet/Blower Does Schematic (M981 Only) . . . . . . . . . . . . . . . ...3-67 Not Work (M577A2 Only) . . . . . . . . . . ...3-125 ELECTRICAL SYSTEM Master Switch On Indicator Does Not Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-129 Differential Hi Oil Temp Indicator Comes On Fuel Level Indicator Malfunctions . ..3-134 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . High Beam Indicator Light Malfunctions . . . . . . . . . . . . . . . . . . . . . . . . . . ...3-140 3-8 3-4 Task 3-68

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