TM 5-3805-262-342-5. FUEL SYSTEM TROUBLESHOOTINGMALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION1. FUEL INJECTION PUMP NOT OPERATING PROPERLY.Step 1.Remove fuel injection pump from engine (page 3-136).Dry cleaning solvent P-D-680 used to clean parts is toxic and flammable.Wear protective goggles and gloves and use only in a well ventilatedarea. Avoid contact with skin, eyes and clothes and don’t breathevapors . Do not use near open flame or excessive heat and don-t smokewhen using it. Failure to do so could cause serious injury. If you be-come dizzy while using cleaning solvent, get fresh air and medicalattention immediately. If contact with skin or clothes is made, flushwith large amounts of water.If contact with eyes is made, wash eyeswith water and get medical aid immediately.Using clean cloth moistenedwith cleaning solvent, thor-oughly clean exterior offuel injection pump. Dry us-ing clean cloths.Remove two capscrews andcopper gaskets, then removecover plate and gasket.Allow oil to drain from fuelinjection pump.Rotate camshaft in counter-clockwise direction asviewed from drive end whilechecking that roller tap-pets, springs, and plungersoperate in firing order se-quence 1-5-3-6-2-4.a.b.If roller tappets,springs, and plungersoperate in firing ordersequence, go to step 2below.If roller tappets, springs, and plungers do not operate in fir-ing order sequence, problem could be damaged camshaft or cam-shaft is installed incorrectly. Disassemble fuel injection pump(page 3-140) and check cause.2-47
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