AUMT QUIZ 1 QUESTIONS AND
ANSWERS 100% CORRECT
Technician A wipes off the outside of a zerk fitting before injecting grease into it.
Technician B injects just enough grease to cause the boot to expand slightly. Who is
correct? - ANSWER-Both A and B
The VIN number includes all the information listed below EXCEPT: - ANSWER-
Weight/Tire Size
When installing an oil pump in an engine: Technician A packs the pump with petroleum
jelly. Technician B submerges the pump in clean oil and rotates the pump shaft to fill the
pump body. Who is correct? - ANSWER-Technician B
Technician A says cooling system pressure is regulated by the pressure relief valve in
the water pump. Technician B says cooling system pressure is regulated by the radiator
cap. Who is correct?? - ANSWER-Technician A
During engine warm-up, when the thermostat is closed, _____. - ANSWER-Coolant
flows through the bypass
During routine service a small amount of engine oil is found in the air cleaner housing.
Technician A says the PCV valve may be clogged. Technician B says the engine could
be overfilled with oil. Who is correct? - ANSWER-Both Technicians
If the fan shroud is removed from a vehicle, _____. - ANSWER-the engine will overheat
during prolonged idling
Two technicians are discussing a vehicle with an overheating problem. There are no
leaks, internal or external. The belts are in good condition, and the radiator has been
removed and flow tested. Everything appears to be in good condition. A new thermostat
was installed, but it did not cure the problem. Technician A says the impeller could be
slipping on the water pump shaft. Technician B says the impeller blades could be
corroded. Who is correct? - ANSWER-Both Technicians
If the engine overheats during long periods of idling but runs normally at highway
speeds, the problem is most likely _____. - ANSWER-Defective Cooling Fan
Oil Coolers are normally found on - ANSWER-High Performance Vehicles
Water Pumps are _________ style pumps - ANSWER-Centrifugal
, To drain a cooling system that does not have a petcock or drain plug in the radiator,
______. - ANSWER-Disconnect the lower radiator hose
The petcock valve is located - ANSWER-At the bottom of the radiator
Sludge is being discussed. Technician A says sludge results from the oxidation of oil.
Technician B says a slight buildup on the underside of the oil fill cap is normal. Who is
correct? - ANSWER-Both Technicians
Blue exhaust smoke is an indication of ______. - ANSWER-Oil in combustion chamber
Technician A says a dry sump lubrication system eliminates the possibility of oil
sloshing and possible oil starvation during hard cornering, braking, and acceleration.
Technician B says a dry sump lubrication system allows the engine to be mounted lower
in the frame, improving handling. Who is correct? - ANSWER-Both Technicians
Two technicians are discussing oil filters. Technician A says the oil filter has an anti-
drain-back valve that prevents the oil in the filter and engine oil passages from returning
to the sump when the engine is shut down. Technician B says the oil filter has a bypass
valve that in the event the filter becomes plugged, oil can flow directly to the bearings.
Who is correct? - ANSWER-Both Technicians
Technician A says an electric cooling fan may come on at any time without warning,
even if the engine is not running. Technician B says an electric cooling fan may be
controlled by the engine control computer. Who is correct? - ANSWER-Both
Technicians
Two technicians are discussing the proper coolant to use on a late model GM vehicle.
Technician A says that "DEX-COOL" type Organic Acid Technology [OAT] is the proper
coolant to use. Technician B says that Ethylene Glycol [good old green] type antifreeze
can be used on any vehicle. Who is correct? - ANSWER-A only
Two technicians are discussing testing coolant with test strips. Technician A says the
test strip measures freezing protection level. Technician B says the test strip measures
coolant acidity.Who is correct? - ANSWER-B only
A vehicle is towed into the shop with a thrown serpentine belt. Technician A checks for
a worn pulley bearing. Technician B checks for a faulty tensioner. Who is correct? -
ANSWER-Both
Technician A checks V-belt tension by pressing his thumb firmly on the longest straight
span of the belt and measuring the amount of deflection. Technician B uses a belt
tension gauge. Who is correct? - ANSWER-Both Technicians
ANSWERS 100% CORRECT
Technician A wipes off the outside of a zerk fitting before injecting grease into it.
Technician B injects just enough grease to cause the boot to expand slightly. Who is
correct? - ANSWER-Both A and B
The VIN number includes all the information listed below EXCEPT: - ANSWER-
Weight/Tire Size
When installing an oil pump in an engine: Technician A packs the pump with petroleum
jelly. Technician B submerges the pump in clean oil and rotates the pump shaft to fill the
pump body. Who is correct? - ANSWER-Technician B
Technician A says cooling system pressure is regulated by the pressure relief valve in
the water pump. Technician B says cooling system pressure is regulated by the radiator
cap. Who is correct?? - ANSWER-Technician A
During engine warm-up, when the thermostat is closed, _____. - ANSWER-Coolant
flows through the bypass
During routine service a small amount of engine oil is found in the air cleaner housing.
Technician A says the PCV valve may be clogged. Technician B says the engine could
be overfilled with oil. Who is correct? - ANSWER-Both Technicians
If the fan shroud is removed from a vehicle, _____. - ANSWER-the engine will overheat
during prolonged idling
Two technicians are discussing a vehicle with an overheating problem. There are no
leaks, internal or external. The belts are in good condition, and the radiator has been
removed and flow tested. Everything appears to be in good condition. A new thermostat
was installed, but it did not cure the problem. Technician A says the impeller could be
slipping on the water pump shaft. Technician B says the impeller blades could be
corroded. Who is correct? - ANSWER-Both Technicians
If the engine overheats during long periods of idling but runs normally at highway
speeds, the problem is most likely _____. - ANSWER-Defective Cooling Fan
Oil Coolers are normally found on - ANSWER-High Performance Vehicles
Water Pumps are _________ style pumps - ANSWER-Centrifugal
, To drain a cooling system that does not have a petcock or drain plug in the radiator,
______. - ANSWER-Disconnect the lower radiator hose
The petcock valve is located - ANSWER-At the bottom of the radiator
Sludge is being discussed. Technician A says sludge results from the oxidation of oil.
Technician B says a slight buildup on the underside of the oil fill cap is normal. Who is
correct? - ANSWER-Both Technicians
Blue exhaust smoke is an indication of ______. - ANSWER-Oil in combustion chamber
Technician A says a dry sump lubrication system eliminates the possibility of oil
sloshing and possible oil starvation during hard cornering, braking, and acceleration.
Technician B says a dry sump lubrication system allows the engine to be mounted lower
in the frame, improving handling. Who is correct? - ANSWER-Both Technicians
Two technicians are discussing oil filters. Technician A says the oil filter has an anti-
drain-back valve that prevents the oil in the filter and engine oil passages from returning
to the sump when the engine is shut down. Technician B says the oil filter has a bypass
valve that in the event the filter becomes plugged, oil can flow directly to the bearings.
Who is correct? - ANSWER-Both Technicians
Technician A says an electric cooling fan may come on at any time without warning,
even if the engine is not running. Technician B says an electric cooling fan may be
controlled by the engine control computer. Who is correct? - ANSWER-Both
Technicians
Two technicians are discussing the proper coolant to use on a late model GM vehicle.
Technician A says that "DEX-COOL" type Organic Acid Technology [OAT] is the proper
coolant to use. Technician B says that Ethylene Glycol [good old green] type antifreeze
can be used on any vehicle. Who is correct? - ANSWER-A only
Two technicians are discussing testing coolant with test strips. Technician A says the
test strip measures freezing protection level. Technician B says the test strip measures
coolant acidity.Who is correct? - ANSWER-B only
A vehicle is towed into the shop with a thrown serpentine belt. Technician A checks for
a worn pulley bearing. Technician B checks for a faulty tensioner. Who is correct? -
ANSWER-Both
Technician A checks V-belt tension by pressing his thumb firmly on the longest straight
span of the belt and measuring the amount of deflection. Technician B uses a belt
tension gauge. Who is correct? - ANSWER-Both Technicians
