Lubrication:

1
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

2
Lubrication

• Forms of lubricants
• Dry (powder)
• Semi dry (grease)
• Viscous (oil)
• Function of engine oil
• Lubricate
• Clean
• Cool
• Cushion
• Seal

3
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

4
Lubrication

• SAE Viscosity / Grade 5W30 and 30

5
Lubrication

• SAE Viscosity / Grade 5W30 and 10W30

6
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

7
LUBRICATION

• A.P.I. American Petroleum Institute
• Service index
• List of ratings determining oil application (SJ)

8
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

9
LUBRICATION

• Four cycle lubricating systems
• Splash dipper

10
LUBRICATION

• Four cycle lubricating systems
• Splash dipper

11
LUBRICATION

• Four cycle lubricating systems
• Splash Paddle Wheel

12
LUBRICATION

• Four cycle lubricating systems
• Barrel Pump

13
LUBRICATION

• Four cycle lubricating systems
• Barrel Pump

14
LUBRICATION

• Four cycle lubricating systems
• Positive displacement Pump

15
LUBRICATION

• Four cycle lubricating systems
• Full flow system
• Positive displacement Pump

16
LUBRICATION

• Two cycle lubricating systems (Total loss)
• Premix gas and oil
• Oil injection

17
LUBRICATION

• Two cycle lubricating mixtures
• Mixture ratio - amount of gasoline to oil
• Examples 161 321 401 501

18
LUBRICATION

• How oil gets dirty.
• Blow by gasses
• Particles from engine parts
• Dirt from checking oil levels

19
LUBRICATION

• Changing engine oil and filter
• To reduce wear
• Cars 3 mos. or 3000mi.
• Small engines 30 50 hrs. or each season