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Engine Element Sources

Guide For Engine Element Sources

Key to element symbols:

  • Al = Aluminum
  • Cr = Chromium
  • Cu = Copper
  • Fe = Iron
  • Pb = Lead
  • Mo = Molybdenum
  • Si = Silicon
  • Na = Sodium
  • Sn = Tin
Engine Element SourcesElement
Possible SourceAlCrCuFePbMoSiNaSn
Aftercooler leak•
Air compressor•
Air compressor bearings••
Air compressor main bearings•
Air compressor piston rings•
Air compressor rod bearings•
Anti-seize compounds (no failure)••
Balancer bearing•
Balancer gears and shaft•
Cam follower•
Possible SourceAlCrCuFePbMoSiNaSn
Cam follower roller pin•
Cam follower roller shaft•
Cam follower rollers•
Cam followers•
Camshaft•
Camshaft and followers•
Camshaft bearings•••
Camshaft bushings•
Camshaft lifter roller pins•
Chrome plated crankshaft (field salvage)•
Possible SourceAlCrCuFePbMoSiNaSn
Condensation••
Coolant entry•
Cooling systems leaks from oil cooler, gaskets or aftercooler•
Crankshaft•
Crankshaft thrust bearing (early engines)•
Crankshaft thrust bearing (later models)•
Cylinder walls•
Dirt entry•
Dirt entry (clay soils)•
Engine and scavage oil pump bearings•••
Possible SourceAlCrCuFePbMoSiNaSn
Front and rear gear train thrust bearing•
Front and rear gears•
Front and rear idler gear thrust bearing•
Front balance gear bushings••
Front balancer gear bushing•
Front idler gear bushings•
Fuel pump housing bearings•
Governor bushings•
Governor drive and bushings•
Main or rod bearings••
Possible SourceAlCrCuFePbMoSiNaSn
Oil additives (no failure)•••••
Oil cooler core tubes leaching (no failure on oil side)•
Oil pump bearings•
Oil pump body•
Oil pump bushings•
Oil pump shafts, gears and body•
Oil pump thrust washer•
Overlay on main and rod bearings•
Piston pin bushings•
Piston rings•
Possible SourceAlCrCuFePbMoSiNaSn
Piston skirts•
Pistons•
Plasma coated piston rings•
Rear accessory drive bushings•••
Rear accessory drive thrust washer•
Rear cluster gear bearings•
Rear cluster gear bushings•
Rear idler gear bushings•
Rocker arm bushings••
Rocker arms•
Possible SourceAlCrCuFePbMoSiNaSn
Rod bearings•
Scavenge pump screen (earlier models)•
Service meter drive gear•
Silicon additives (no failure)•
Silicon grease (no failure)•
Timing gear bearings••
Timing gear bushings•
Timing gear cover•
Timing gear thrust bearings•
Timing gear thrust washers•
Possible SourceAlCrCuFePbMoSiNaSn
Timing gears•
Top piston ring plasma coated•
Turbocharger thrust bearing•
Turbocharger thrust or sleeve bearings•
Valves, valve seats, guides and push rods•
Water entry•
Water pump bearings••
Water pump thrust bearing•
Wrist pin bushings•
Possible SourceAlCrCuFePbMoSiNaSn

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