2203

• Interference Fit


  Used to obtain a more positive seal by means of a narrow contact surface. 
• Dimensional Inspection


  Used to assure that the engine’s component parts and clearances meet the manufacturer’s specifications. 
• Eddy Current Inspection


  Can frequently be performed without removing the surface coatings, such as primer, paint, and anodized films. It can be effective in detecting surface and subsurface corrosion, pots, and heat treat condition.
• Crankshaft


  Usually the heaviest and most highly stressed part of an aircraft engine.
• Overhaul


  It involves replacing piston rings, reboring or honing cylinder walls, replacing pistons (if the cylinders are rebored), replacing main and connecting rod bearings, regriding the crankshaft to restore the journals (if needed), and restoring the valves.
• Counterweights


  Disassembled from the crankshaft merely by removing the retaining rings, after which the washers, rollers and counterweights may be removed from the crankshaft ear. 
• Decarbonizing


  Parts contaminated with hard carbon, baked-on oil, resinous varnishes, and paint are ready for this after the degreasing process has been completed.
• Vapor Blasting


  Employed for special cleaning jobs and is accomplished by means of specially designed equipment and materials.
• Gears


  The primary purpose of a this is the transmission of force through motion; therefore, stress and wear occur continually. 
• Chipping


  Breaking away of pieces of material, that is usually caused by excessive stress concentration or careless handling. 
• Overhaul shop


  May be established to handle comparatively few small engines, or they may be large companies which overhaul hundreds of small and large engines each year. 
• Certificated repair station


  Defined by Federal Aviation Regulations as "a facility for the maintenance, repair, and alteration of airframes, powerplants, propellers, or appliances, holding a valid repair station certificate with appropriate ratings issued by the Administrator.