Wear Metal Sources
Wear Metal Limit Guidelines
| Compartment | Iron | Chromium | Lead | Copper | Tin | Aluminum | Nickel | Silver | Titanium | Vanadium | Manganese | Antimony | Cadmium | Lithium |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Engine | Cylinders, Oil Pump, Gears, Crankshaft, Camshaft, Wrist Pins, Valve Train, Rings
| Rings, Some Roller or Taper Bearings, Shafts, Valve Train, Exhaust Valves, Coolant Additive | Bearings, Bushings, Solder | Wrist Pin Bushings, Cooler, Bearings, Thrusts, Oil Pump, Turbo charger
| Bearings, Bushings, Solder
| Pistons, Dirt (as alumina), Bearings, Case, Bushings, Block, Retainers, Turbo, Blower
| Gears, Shafts, Bearings, Valve Train, Cam
| Tracer in EMD bearings, Solder, Coolant
| Shafts, Turbo, additive
| Fuel Dilution
| Fuel dilution Some steel Alloys in gears
| Babbitt bearings
| Contaminant from some fossil fuels. Pigment in paint.
| Contaminant – Lithium grease
|
Transmission | Gears, Shafts, Bearings, PTO, Brakes, Disks, Pump, Housing, Shift Spools | Some Roller or Taper Bearings, Shafts, Coolant Additive
| Sealing compounds Lead Paint, Solder, Bearings, Bushings
| Disks, Bearings, Bushings, Thrusts Cooler, Oil Pump | Sealing compounds Lead Paint, Solder, Bearings, Bushings
|
Torque, Dirt (as alumina), Thrusts, Bushings, Case
| Gears, Shafts, Bearings
| Solder, Coolant
| Some Shafts, Gears, Bearings, additive | Does not apply
| Some steel Alloys in gears
| Does not apply
| Pigment in paint
| Contaminant – Lithium grease
|
Hydraulic | Rotors, Vanes, Pistons, Housing, Gears, Shafts, Valves
| Rods, Valves | Pump thrust plates, Bushings | Pump, Cooler, Bearing Cage Bushings, Piston | Pump thrust plates, Bushings
| Dirt (as alumina), Case | Gears, Shafts, Bearings
| Does not apply
| Stainless Steel, additive | Does not apply
| Some steel Alloys in gears
| Does not apply
| Pigment in paint. Water glycol is corrosive to cadmium
| Contaminant – Lithium grease
|
Gear Box | Gears, Shafts, Bearings, Housings | Rods, Valves | Bearings, Bushings | Bushings, Thrusts, Bearing Cage Bushings, Piston | Pump Thrust plates, Bushings | Dirt(as alumina) Bushings, Thrusts | Gears, Shafts, Bearings
| Does not apply
| Some Shafts, Gears, Bearings, additive | Does not apply
| Some steel Alloys in gears
| Does not apply
| Pigment in paint. Electro- plating
| Contaminant – Lithium grease
|
Compressor | Bearings, Gears, Case, Valves, Liners, Rings, Shafts, Screws
|
Shafts, Cams, Rods, Valves, Valve Guides,
| Bearings, Bushings
| Wrist Pin Bushings, Cooler, Bearings, Thrusts Oil Pump
| Bearings, Bushings, Solder | Thrusts, Dirt (as alumina), Shims, Spacers, Bearings, Case, Impellers, Pistons
| Gears, Shafts, Bearings, Valve Train, Cam
| Does not apply
| Some Shafts, Gears, Bearings, blades, additive
| Does not apply
| Some steel Alloys in gears
| Does not apply
| Pigment in paint. Electro- plating | Contaminant – Lithium grease |