Lubricants 2

The major result of friction is:

sliding.

rubbing.

heat.

abrasion.

Correct! Wrong!

The resistance between two objects lightly coated with oil or grease is called:

dry friction.

greasy friction.

oily friction.

viscous friction.

Correct! Wrong!

When an oil clings to a shaft and wedges between it and the bearing so that the shaft is supported entirely by the oil, it is called:

greasy friction.

boundary lubrication.

hydrodynamic lubrication.

synthetic lubrication.

Correct! Wrong!

Society of Automotive Engineers establish the ratings for:

oil applications.

oil grades.

oil lubricating qualities.

oil viscosities.

Correct! Wrong!

The American Petroleum Institute classification "CD" indicates:

light duty diesel use.

gasoline engine through 1989.

moderate diesel service.

severe duty diesel service.

Correct! Wrong!

Friction depends on the type of material, the amount of pressure applied and:

the surface finish and the amount of movement.

the type of lubricant and the amount of lubricant.

the method of attachment and the amount of push.

the base lubricant and the type of finish.

Correct! Wrong!

The resistance of liquid to flowing is called:

intensity.

viscosity.

volatility.

cetane.

Correct! Wrong!

The ability of a gear oil to provide lubrication at the lowest anticipated temperature is called:

pour point.

viscosity index.

channel temperature.

extreme pressure.

Correct! Wrong!

The API classifications for gear oils uses the letter prefix:

EP

SAE

HO

GL

Correct! Wrong!

Grease from a container which has been left open can still be used as long as you remove the contaminated top layer.

True

False

Correct! Wrong!

Water is not desirable as a coolant by itself because:

it is plentiful and cheap.

it circulates freely.

it absorbs heat well.

it corrodes metal parts.

Correct! Wrong!

By definition, preventive maintenance is:

service that is performed on when necessary.

an organized procedure established by the manufacturer.

the process of changing oil and filter.

the responsibility of the service manager.

Correct! Wrong!

Before draining oil, the engine should be brought to operating temperature so that:

the machine is easier to work on.

all of the fittings will move easily.

you don't have to warm it up to move it.

the oil will hold contaminants and flow easily.

Correct! Wrong!

The first item to watch for when restarting an engine after an oil change is:

oil level.

oil pressure.

oil leaks.

oil analysis.

Correct! Wrong!

In relation to lubricants (transmission and drive axle), what is channeling?

a condition where a lubricant breaks down in high temperatures.

a problem where extreme pressures on components causes a lubricant to separate.

an observation of a liquid seeking the lowest centre of gravity in a specified space.

a condition in which components to not get lubricated due to cold temperature, which thicken the lubricants, causing greatly reduced flow.

Correct! Wrong!

The most important consideration that you must make in maintenance is to:

always consult manufacturer's recommendations.

use the same lubricant for all applications.

only maintain those items that are written on the work order.

keep track of how much time you spend on each machine.

Correct! Wrong!

In order to prevent bearing corrosion an oil must have:

corrosion inhibitors.

rust inhibitors.

anti-oxidants.

viscosity index improves.

Correct! Wrong!

When changing a replaceable element filter, you should only change the neoprene gasket once per year:

True

False

Correct! Wrong!

To provide good flowing qualities at low temperatures an oil must have pour point depressants:

True

False

Correct! Wrong!

The ability of a coolant to protect against freezing can be tested using:

a hydrometer.

a thermometer.

a pressure gauge.

a special electrical indicator.

Correct! Wrong!

One safety precaution to observe when changing oil is:

filters are tight and require force to remove them.

oil is hot and can cause serious burns.

wrenches can slip and cause injury.

drain plug edges are sharp and can cut you.

Correct! Wrong!

Oil can be flushed through the floor drain as long as it is still hot:

True

False

Correct! Wrong!

The filter that is removed and replaced as a unit is:

the replaceable element filter.

the spin-on filter.

the oil bath filter.

the cartridge element filter.

Correct! Wrong!

It is good practice when changing filter to:

always use filter with the same thread size.

always use the same brand of filter.

always check to make sure that it is the right filter.

always tighten it as far as possible.

Correct! Wrong!

In addition to changing oil and filters it is important that you:

check the RPM limits on the engine.

test drive the unit.

check other safety items.

write all items on the work order.

Correct! Wrong!

Lubricants 2

The major result of friction is:

The resistance between two objects lightly coated with oil or grease is called:

When an oil clings to a shaft and wedges between it and the bearing so that the shaft is supported entirely by the oil, it is called:

Society of Automotive Engineers establish the ratings for:

The American Petroleum Institute classification "CD" indicates:

Friction depends on the type of material, the amount of pressure applied and:

The resistance of liquid to flowing is called:

The ability of a gear oil to provide lubrication at the lowest anticipated temperature is called:

The API classifications for gear oils uses the letter prefix:

Grease from a container which has been left open can still be used as long as you remove the contaminated top layer.

Water is not desirable as a coolant by itself because:

By definition, preventive maintenance is:

Before draining oil, the engine should be brought to operating temperature so that:

The first item to watch for when restarting an engine after an oil change is:

In relation to lubricants (transmission and drive axle), what is channeling?

The most important consideration that you must make in maintenance is to:

In order to prevent bearing corrosion an oil must have:

When changing a replaceable element filter, you should only change the neoprene gasket once per year:

To provide good flowing qualities at low temperatures an oil must have pour point depressants:

The ability of a coolant to protect against freezing can be tested using:

One safety precaution to observe when changing oil is:

Oil can be flushed through the floor drain as long as it is still hot:

The filter that is removed and replaced as a unit is:

It is good practice when changing filter to:

In addition to changing oil and filters it is important that you:

Success!

Heavy-Duty Mechanic - Trucks & Equipment