TM 10-4320-307-244-11INJECTORREPAIR(CONT).CLEANING/INSPECTION/REPAIR:Dry cleaning solvent is potentially dangerous. Avoid repeated andprolonged breathing of vapors and skin contact with the liquid. Do notuse near open flame, arcing equipment, or other ignition source. Alwayswear eye protection and protective clothing.Death or serious injury could occur if compressed air is directed againstthe skin. Do not use compressed air for cleaning or drying unless thepressure is/has been reduced to 30 psi (2.11 kgcm2)or less. When workingwith compressed air always use chip guards, eye protection, and otherpersonal protective equipment.1.Check and make note of injectors having carbon deposits at tip of plunger.2.Clean injector parts of any carbon varnish using dry cleaning solvent.NOTEUltrasonic cleaning is recommended for barrel, plunger, and cup.3.Neutralize the solvent after cleaning by dipping the parts in mineral spirits and dry with compressed air.CAUTIONDo not use drills or other instruments to clean injector cup holes. Thiscan alter the hole size. Wires may be used if wire is a smaller size thanspray hole. Never use a wire brush or crocus cloth to clean cup tip area.4.Clean injector cup holes using wireof smaller diameter than spray holes.CAUTIONAfter cleaning injector parts, aclean area, free of grease and dirt,must be provided for inspectionprocedures.Most injector failuresare caused by dirt.5.Place all injector parts on lint-free towels on workbench area forinspection.6.Inspect plunger (1) as follows:a.Excessive wear or fretting may be found onspring retainer contact area of plungerflange. Replace plunger and barrel assem-bly if plunger flange is less than 0.144 inch(3.66 mm) thick.4-82
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
