TM 5-4310-393-14f. Slowly crank the engine by hand. As the engine is cranked, read fuel injection pressure on the gaugeInjection pressure should be 4350 to 5075 psi (300 to 350 bar) Stop cranking engine and observe If pressure Ismaintained If pressure drops below 3625 psi (250 bar) within 10 to 15 seconds, then injection pump is not in workingorder.g.Depressurize fuel injector by loosening side nuts (2).h. Remove testing device 60462800 (3).B.Remove.1.Removing the Fuel Injection Pumpa. Move throttle control lever to the STOP position and pull out the extra fuel buttonCAUTIONDo not scratch or mar matingsurfaces of pump body or cover. Thefuel injection pump may leak orotherwise malfunction afterreassembly.b.Remove two hex nuts (Figure 5-3,Item 1) and remove injection pump (2).c.Remove shim(s) (3), plate (4), andtappet (5)FIGURE 5-3. FUEL INJECTION PUMP - REMOVALWARNINGDEATH OR SERIOUS INJURY COULD OCCUR IF FUEL IS NOT HANDLEDCAREFULLY. USE IN A WELL VENTILATED AREA AWAY FROM OPEN FLAME,ARCING EQUIPMENT, IGNITION SOURCES, HEATERS, OR EXCESSIVE HEAT.ENGINE MUST BE SHUT DOWN AND COOL BEFORE REFUELING. ALWAYSSTORE FUEL IN PROPER, MARKED CONTAINERS. DO NOT SMOKE.WARNINGDEATH OR SERIOUS INJURY COULD OCCUR IF COMPRESSED AIR IS DIRECTEDAGAINST THE SKIN. DO NOT USE COMPRESSED AIR FOR CLEANING ORDRYING UNLESS THE PRESSURE HAS BEEN REDUCED TO 30 PSI (2.06 BAR) ORLESS. WHEN WORKING WITH COMPRESSED AIR ALWAYS USE CHIP GUARDS,EYE PROTECTION, AND OTHER PERSONAL EQUIPMENT.5-9
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