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Lubrication. Lubrication: The process of reducing friction between moving surfaces. Friction: Resistance created when one surface rubs on another Slows movement of parts Generates heat Increases wear Events: particles - expansion - seizure. Lubrication. Forms of lubricants

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lubrication
Lubrication
  • Lubrication:
    • The process of reducing friction between moving surfaces
  • Friction:
    • Resistance created
    • when one surface
    • rubs on another
    • Slows movement of parts
    • Generates heat
    • Increases wear
    • Events: particles - expansion - seizure
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Lubrication
  • Forms of lubricants
    • Dry (powder)
    • Semi dry (grease)
    • Viscous (oil)
  • Function of engine oil
    • Lubricate
    • Clean
    • Cool
    • Cushion
    • Seal
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Lubrication
  • SAE Society of Automotive Engineers
  • Viscosity

The ability of liquid to resist flowing

  • SAE Index / Viscosity Index
    • Listing of viscosities
  • Examples of viscosities (weights)
    • 10w 20w 30w 40w 50w 60w 80-90w
    • 5w30 10w30 10w40 20w50
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Lubrication
  • SAE Viscosity / Grade 5W30 and 30
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Lubrication
  • SAE Viscosity / Grade 5W30 and 10W30
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LUBRICATION
  • A.P.I.
    • American Petroleum Institute
    • Service index
      • List of ratings determining oil application (SJ)
  • Service manual / oil application / climate
  • Oil additives improve oil performance
    • Detergents
    • Anti-rust / Anti-corrosion
    • Oxidation inhibitors
    • Anti-foam
    • Dispersant
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LUBRICATION
  • A.P.I. American Petroleum Institute
    • Service index
      • List of ratings determining oil application (SJ)
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LUBRICATION
  • Types of lubricating systems
    • Four cycle systems reuse oil
    • Two cycle systems burn oil with fuel
    • Two and Four cycle systems oils CAN NOT

be interchanged

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LUBRICATION

Four cycle lubricating systems

  • Splash dipper
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LUBRICATION

Four cycle lubricating systems

  • Splash dipper
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LUBRICATION
  • Four cycle lubricating systems
    • Splash Paddle Wheel
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LUBRICATION

Four cycle lubricating systems

  • Barrel Pump
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LUBRICATION

Four cycle lubricating systems

  • Barrel Pump
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LUBRICATION
  • Four cycle lubricating systems
    • Positive displacement Pump
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LUBRICATION
  • Four cycle lubricating systems
    • Full flow system
    • Positive displacement Pump
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LUBRICATION
  • Two cycle lubricating systems (Total loss)
    • Premix gas and oil
    • Oil injection
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LUBRICATION
  • Two cycle lubricating mixtures
    • Mixture ratio - amount of gasoline to oil
    • Examples: 16:1 32:1 40:1 50:1
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LUBRICATION
  • How oil gets dirty.
    • Blow – by gasses
    • Particles from engine parts
    • Dirt from checking oil levels
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LUBRICATION
  • Changing engine oil and filter
    • To reduce wear
    • Cars 3 mos. or 3000mi.
    • Small engines 30 – 50 hrs. or each season