Auto Service Test Review For the Most Effective Personal Review, Match the Following Questions to the On Line Study Guide Multimedia
Auto Service Test Review Test #3 73 Questions from: Chapters 39 & 40 on Cooling Systems Chapters 41 & 42 on Lubrication Systems Chapter 75 on Air Conditioning (HVAC) For the Most Effective Personal Review, Match the Following Questions to the On Line Study Guide Multimedia
Chapters 39 & 40 Information to Know 1. Why control the engine operating temp (3) 2. Normal coolant temperature range 3. How the heater core works & looks 4. How the water pump works & looks 5. How the thermostat works & looks 6. Air cooled vs. Liquid cooled engine ID 7. Why precise coolant temp is important (3) 8. How the radiator works 9. Job of the fan & the fan shroud
Chapters 39 & 40 Information to Know 11. Where s the ATF cooler located? 12. Crossflow vs. Downflow radiators 13. Radiator construction: materials & parts 14. Where s the AC Condenser? 15. Radiator cap reasons & operation 16. Radiator cap & how it raises boil point (3º) 17. Vacuum valve vs. pressure relief valve 18. Closed system operation & cap function 19. How fans are operated: electric or clutch 20. Job of the fan shroud 21. Thermostat operation & diagnostics
Chapters 39 & 40 Information to Know 23. Ethylene glycol vs. Propylene glycol 24. 50/50 mixture for a 34 freeze point 24. 50/50 mixture for a +265 boil point 25. Reason for engine block heaters 26. Pressure Testing a cooling system 30 & 31. Thermostat stuck open or closed 33. Flushing a cooling system (acidic coolant makes stray voltage with 2 metals) 34. Coolant hydrometer or test strip use
Chapters 41 & 42 Information to Know 1. Lubrication reduces friction 2. Oil s jobs: Lubricates, Seals, Cleans, & Cools 3. Lubrication system parts identification 4. Crude oil & it s uses for oil & fuel 5. Synthetic oil is not from crude oil base stock! 7. Friction Bearings precision inserts 8. Anti Friction Bearings needles, rollers & balls 9. Define Oil Viscosity Resistance to Flow 10. High Viscosity vs. Low Viscosity # s
Chapters 41 & 42 Information to Know 11. SAE & what it rates Viscosity 12. Multi viscosity oils 5w20 10w30 20w50 13. API & what it rates Service Classification 14. Best API rating now is SN (S for spark ignition engine oil) 15. Oil filter operation & how it looks 18. Oil pump drives & oil pump types 20. Reason for an oil filter by pass valve 22. PCV positive crankcase ventilation system prevents oil dilution & crankcase pressure
Chapter 75 Information to Know 1. HVAC controls air temperature, humidity, circulation and filters incoming air 3. 3 states of matter: solid, liquid, gas or vapor 4. Heat transfers from more heat to less heat *Conduction *Convection *Radiation 8. British Thermal Unit = heat quantity 9. Definition of Vaporization & Evaporation 10. Definition of Condensation 11. Pressurized things raise in temperature
Chapter 75 Information to Know 12. Refrigerant boils at 29 Fº 13. R 12 (ozone depletion) R 134a (EPA approved) 14. Compression >Condensation >Expansion >Evaporation 18. Compressor >Condenser >Expansion Valve >Evaporator 22. Refrigerant circulates compressor pushes it 22. Blower motor & squirrel cage fan move air 22. Receiver Drier has a desiccant to dry R 26. Accumulator has a desiccant to dry R 28. AC High Side vs. Low Side
Chapter 75 Information to Know 29. High Side under the hood 29. Low Side in the passenger compartment 30. Compressor electromagnetic clutch 34. Sight Glass is for an R visual inspection 36. Either an orifice tube or an expansion valve 38. Heater core to warm passenger area 40. Cabin air filter
Shop Task Information to Know & Use Service Information Use Gather Engine Data From Charts VIN Interpretation Coolant Chart Use Engine Oil Capacity Chart
Parts & Tools to Know Thermostatic cooling fan clutches
Radiator fan with thermostatic clutch engages when radiator is hot
Electric cooling fan with fan shroud
These are: Air Filters Fuel Filters Cabin Air Filters Oil Filters
These are: Radiators Heater Cores A.C. Evaporators A. C. Condensers
These are: Coolant Test Strips Coolant Hydrometers Coolant Pressure Testers Thermostats
These are: Oil Filters Engine Air Filters Cabin Air Filters Fuel Filters
These are: Poppet Valve PCV Valve Heater Control Valve Oil Filter By Pass Valve
These are: Belt Tensioners Thermostats Oil Pumps Radiator Caps
These are: Oil Pumps Water Pumps Fuel Pumps A. C. Compressors
These are: Accumulators Receiver driers Thermostats Oil Pumps
These are: Radiator Caps Thermostats Oil Filters Heater Cores
These are: Oil Pumps Water Pumps Fuel Pumps A. C. Compressors
This is a: Radiator Heater Core A.C. Evaporator A. C. Condenser
These are: Heater Blower Motors Heater Cores Engine Cooling Fans Rear Defrosters
Water Pumps Impeller type, not positive displacement pressure is done by the cap
ATF Cooler Lines Radiator Radiator Drain Petcock
Coolant Recovery Reservoir
Thermostats & Housings
ECT Graph Engine Coolant Temperature Sensors NTC Thermistors
Freeze Plugs Expansion Plugs Core Plugs Expandable Core Plug Oil Gallery Plugs
Thermostats
Sensor for Hot Light Normal ECT Low Coolant Level Sensor
Radiator Caps pressure relief specification is printed on the cap
Plastic Radiator Side Tank with ATF Cooler
Radiator Drain Petcocks
Radiator Drain Petcock Brass & Copper Down Flow Radiator
European Oil Filter Cartridge Housing with pressure sending unit & oil pump
Oil Pump Drive Shaft from Distributor Hexagon, Splined, or Round with Spade End Oil Pump Pick up Screen
Front Left Turn Racing Oil Pan
Oil Pan Baffles or Windage Tray
Oil Squirter
Oil Squirters
Hydraulic Lifters Hydraulic Bucket Lifter
Oil Squirt Hole Push Rod Guide Plate
Gerotor Oil Pump
Gear Oil Pump Check Clearances with Flat Feeler Gauges
Oil Pressure Relief Valve Oil Pressure Sending Unit Crankshaft Driven GeRotor Oil Pump
Oil Filter Adapter Oil Pressure Sending Units Oil Filter
Oil Pressure Sending Units Also known as Oil Pressure Switches
Low Oil Switches Low Oil Level Sensors
Axial Compressor pistons on the same axis as the shaft Suction hose Reed Valve Plates Discharge hose Clutch Coil Connection Electromagnetic Clutch
Radial Compressor pistons arranged at a right angle to the shaft Always Vapor in & Vapor out
Condenser in the engine compartment high side Lowest line is the liquid line High Pressure refrigerant changes state from a vapor to a liquid & gives off heat
Evaporator in the passenger compartment low side Refrigerant changes state from a liquid to a vapor and takes on heat
Thermostatic Expansion Valve with Sensing Bulb Orifice Tube Expansion Device
Accumulator Orifice Tube Accumulator with low pressure switch
Low Side Test Port Desiccant Dries Refrigerant Receiver Drier with Desiccant Bag Accumulator
[R 12] CCL2F2 + H 2 0 [R 134a] CF3CH3 + H 2 O Freon Suva
Compressor cut out switches Pressure switches low pressure or high pressure Removable & still seal with Schrader Valve underneath
Serpentine Belt Tensioners Low Belt Tension effects cooling, charging, power steering, etc.
Vacuum operated heater control valves Turn off coolant flow to heater core when A.C. is turned on
Heater Core
Blower Squirrel Cage Fan & Blower Motor
Blend Door Vacuum Motor Electromagnetic Compressor Clutch Note: System Defaults to Defrost Mode if vacuum is leaking or blocked
Compressor Torrington Bearing (axial thrust) Compressor Pistons & Rods Compressor Swash Plate on Clutch Shaft
Air Conditioning Control Assembly
Clutch Coil Clutch Plates
Low Pressure Lines Compressor Connections
Scroll Compressor