TM 9-2350-261-10TROUBLESHOOTING TABLE (cont)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONENGINE (cont)3. ENGINE CRANKS BUT DOES NOT START WHEN THETEMPERATURE IS BELOW +40°F (+4°C) AND THE AIR BOX HEATERIS USED.Step 1. Have unit maintenance check to see if air box heater systemis operating properly.Step 2. Have unit maintenance check to see if air box heater fuel andair lines and electrical connections are tight.Tighten any loose connections.4. ENGINE CRANKS TOO SLOW TO START.step 1.step 2.Check to see if battery cable connections are clean and tight,and battery water is up to correct level (page 3-12).Use outside power source (page 2-174) or tow start(page 2-253) the carrier. If the cause of slow cranking is notobvious, have unit maintenance troubleshoot the electricalsystem.If temperature is colder than -25°F (32°C) check to see ifengine disconnect lever is engaged (page 2-167).CAUTIONNever try to move the engine disconnect lever when theengine is running. Do not leave engine disconnected more than10 minutes. Damage to the transfer gearcase can result.Disengage the engine disconnect lever (page 2-167)..If engine still cranks too slowly, record fault on form DA 2404and notify unit maintenance.5. ENGINE LABORS, RUNS ROUGH, STALLS, OR DOES NOT PUT OUTFULL POWER.Step 1. CheckCheckshowsStep 2. Checkto see if engine is getting enough air.air cleaner restriction indicator (page 2-81). If indicatoronly red in the window, notify unit maintenance.to see if there is water in the fuel.3-6
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