HD4 Automatic Transmission II

The ______________ gear acts like a band to hold the entire planetary gear set together.

Sun

Carrier

Ring

Pinion

Show hint

Correct! Wrong!

When an external gear tooth is in mesh with an internal gear, the output rotation for both gears will be the same.

True

False

Correct! Wrong!

In a planetary gear set, if both the sun and ring gear are held you would have:

Reduction

Direct

Reverse

Overdrive

Correct! Wrong!

Maximum forward reduction is achieved when the __________ gear(s) is (are) stationary.

Sun

Carrier

Ring

Planetary

Correct! Wrong!

When the carrier is held and the sun is the drive gear, in a simple planetary gear set, you would have:

Maximum forward reduction

Reverse reduction

Maximum forward overdrive

Reverse overdrive

Correct! Wrong!

When the carrier is held and the ring is the drive gear, in a simple planetary gear set, you would have:

Maximum forward reduction

Reverse reduction

Maximum forward overdrive

Reverse overdrive

Correct! Wrong!

When the ring is held and the sun is the drive gear, in a simple planetary gear set, you would have:

Maximum forward reduction

Reverse reduction

Maximum forward overdrive

Reverse overdrive

Correct! Wrong!

When the ring is held and the carrier is the drive gear, in a simple planetary gear set, you would have:

Maximum forward reduction

Reverse reduction

Maximum forward overdrive

Reverse overdrive

Correct! Wrong!

In a planetary gear set with the sun held and the carrier driven, what do you have?

Overdrive

Reduction

Neutral

Reverse

Correct! Wrong!

If the sun is held and the carrier is drive you have:

Neutral

Reverse

Overdrive

Direct

Correct! Wrong!

In a planetary gear set if the ring gear is held, the carrier is the drive and the sun is driven the result is:

Forward reduction

Forward overdrive

Reverse reduction

Reverse overdrive

Correct! Wrong!

The planetary gear set has gears that are:

Always in constant mesh

Shifted with a special shift collar

Incapable of handling heavy loads

Made of special lightweight materials

Correct! Wrong!

If two members of a gear set are locked together, the result is:

Reduction

Direct drive

Reverse

Neutral

Correct! Wrong!

If the sun gear is held and the ring gear is the input, the result from the planet carrier is:

Reduction

Reverse

Overdrive

Direct drive

Correct! Wrong!

If the ring gear is held and the planet carrier is input, the result from the sun gear will be:

Reduction

Reverse

Overdrive

Direct drive

Correct! Wrong!

If the planet carrier is held and the ring gear is input, the result from the sun gear would be:

Reduction

Reverse

Overdrive

Direct drive

Correct! Wrong!

In order to provide reduction, overdrive or reverse, an automatic or powershift transmission uses:

Shift collars

Holding devices

Pressure control valves

Shift levers

Correct! Wrong!

Factors that trigger shifting between gears on an automatic transmissions include:

Road speed

Throttle position

Governed speed

All of the above

Correct! Wrong!

The shifting of gears in an automatic transmission is actuated by the use of:

Hydraulic force

Air pressure

Radial force

Atmosphere pressure

Correct! Wrong!

The oil pump in an automatic transmission circulates fluid for the purpose of:

Lubrication

Clutch and brake application

Supplying oil to the torque converter

All of the above

Correct! Wrong!

An automatic transmission operating with a low oil level may result in:

Air to enter the oil at the pump suction location

Multi-disc clutches or brakes to slip

Torque converter starvation

All of the above

Correct! Wrong!

The grooving of the face of some multiple disc clutch packs:

Allows for oil to escape or squeezed out more readily during application

Increase suction between the discs and plates during release to allow oil to enter more readily

Is used to vary the effective friction area of the clutch disc

Really makes little difference in shifting, and is totally at the discretion of the manufacturer

Correct! Wrong!

When stall testing there is a great deal of heat generated.mm

true.

false.

Correct! Wrong!

An increase in the transmission input speed from stopped to 800 rpm, will:

lower the oil level at the dipstick.

raise the oil level at the dipstick.

have no effect on the oil level at the dipstick.

none of the above.

Correct! Wrong!

An increase in transmission oil temperature will:

lower the oil level.

raise the oil level.

have no effect on the oil level.

all of the above.

Correct! Wrong!

When overhauling an automatic transmission you should also:

flush or replace the oil cooler.

dissassemble and clean or replace the torque converter.

flush the cooler lines.

all of the above.

Correct! Wrong!

Which of the following may cause an unusually high temperature in an automatic transmission?

clogged oil cooler.

low oil level.

faulty torque converter.

all of the above.

Correct! Wrong!

Stall testing is done with:

vehicle stopped, brakes applied, in gear and wide open throttle.

vehicle moving, climbing hill, wide open throttle.

vehicle stopped, in neutral, brakes applied and wide open throttle.

vehicle stopped, brakes applied, in gear and engine idling.

Correct! Wrong!

When stall testing if engine RPM reading is 400 RPM over specifications, what may be the problem?

plugged engine air cleaner.

transmission low on oil.

a seized over-running clutch.

transmission vent is plugged.

Correct! Wrong!

When performing a stall test and torque converter, if engine RPM is 400 RPM below specifications, which of the answers below, may be the problem?

plugged engine air cleaner.

transmission low on oil.

transmission vent is plugged.

a slipping clutch pack.

Correct! Wrong!

When performing a stall test on an automatic transmission and torque converter, the engine RPM is 200 RPM below manufacturer''s specifications, which of the answers below may be the problem?

plugged fuel filters.

slipping clutches in the transmission.

damaged impeller blades.

stuck stator.

Correct! Wrong!

To remove an oil pump from an automatic transmission, a technician must:

remove the transmission, the torque converter, then the oil pump.

remove the transmission pan and filter, then remove the oil pump.

remove the transmission pan and filter, then remove the main control valve body, them the oil pump.

remove the transmission, remove the torque converter, remove the bell housing, then remove the oil pump.

Correct! Wrong!

When checking fluid from an automatic transmission, a technician should:

check for proper color.

check for proper color ans smell.

check for proper level, color, smell, and any sign of particles.

check for proper color, smell, particles and correct viscosity.

Correct! Wrong!

Clutches used in automatic transmission are:

multiple, wet clutches.

oil applied.

spring released.

all of the above.

Correct! Wrong!

Automatic transmission oil pumps are driven by special lugs on the torque converter.

True.

False.

Correct! Wrong!

To prevent damage to the transmission from metal particles, some automatic transmissions may use ______________within their oil system routing.

magnetic separators.

centrifugal filters.

10 micron screens.

orifice or edge filters.

Correct! Wrong!

If a passage has restriction that is 50% smaller than the normal passage size and input pressure is 350 psi, then the pressure after the restriction when fluid is flowing would be:

100 psi.

175 psi.

350 psi.

700 psi.

Correct! Wrong!

When the system using the restriction described in the previous question has the device applied and the fluid stops flowing, the pressure after the restriction would be:

100 psi.

175 psi.

350 psi.

700 psi.

Correct! Wrong!

The purpose of a hydraulic accumulator in a transmission is to prevent damage to the pump if the pressure in the system should fluctuate.

True.

False.

Correct! Wrong!

The pressure that relates to the amount of load on the engine is:

mainline pressure.

control pressure.

governor pressure.

throttle pressure.

Correct! Wrong!

The timing of shifts in an automatic transmission is controlled by:

scheduling valves.

accumulator regulators.

inhibit valves.

shift valves.

Correct! Wrong!

The hydraulic operation of any transmission can be visually described by using:

a pressure chart.

a power-flow diagram.

a component list.

a hydraulic schematic.

Correct! Wrong!

When checking a transmission, the first item that you should inspect for is:

fluid leaks.

fluid level.

proper operation.

operating pressures.

Correct! Wrong!

When hydraulically testing an automatic or powershift transmission, you have to test fluid pressure and:

torque output conversion.

flow rate, if possible.

lock up pressures.

forward clutch slippage.

Correct! Wrong!

The most important aspect of transmission repair is:

proper adjustments.

cleanliness.

using the correct fluids.

proper measurement of clearances.

Correct! Wrong!

Before attempting to install your new frictional clutches or bands you should ensure they are correct by _____________________.

matching them to the appropriate steel plates.

measuring them for proper size and thickness.

counting the number of plates that were removed.

soaking them in clean fluid.

Correct! Wrong!

It is not necessary to test the equipment after overhaul if you did the job right.

True.

False.

Correct! Wrong!

The function of the inhibitor valve in heavy duty powershift transmission is to:

prevent upshifting when the governor oil pressure is too high.

prevents downshifting when the governor pressure is too high.

prevents two or more clutches being pressurized at the same time.

prevents over-speeding of the transmission output shaft.

Correct! Wrong!

An automatic transmission will not shift into either forward or reverse at an idle. The oil pressure was checked and is normal. What else may be the problem?

splines torn off at pump.

low oil too level.

high oil too level.

shift rod broken internally.

Correct! Wrong!

When performing a stall test on an automatic transmission and torque converter, the engine RPM exceeds the manufacturer''s specifications by 200 RPM, what may be the problem?

plugged fuel filters.

damaged impeller blades.

air filters have too little restriction.

slipping one way clutch.

Correct! Wrong!

The ______________ gear acts like a band to hold the entire planetary gear set together.

When an external gear tooth is in mesh with an internal gear, the output rotation for both gears will be the same.

In a planetary gear set, if both the sun and ring gear are held you would have:

Maximum forward reduction is achieved when the __________ gear(s) is (are) stationary.

When the carrier is held and the sun is the drive gear, in a simple planetary gear set, you would have:

When the carrier is held and the ring is the drive gear, in a simple planetary gear set, you would have:

When the ring is held and the sun is the drive gear, in a simple planetary gear set, you would have:

When the ring is held and the carrier is the drive gear, in a simple planetary gear set, you would have:

In a planetary gear set with the sun held and the carrier driven, what do you have?

If the sun is held and the carrier is drive you have:

In a planetary gear set if the ring gear is held, the carrier is the drive and the sun is driven the result is:

The planetary gear set has gears that are:

If two members of a gear set are locked together, the result is:

If the sun gear is held and the ring gear is the input, the result from the planet carrier is:

If the ring gear is held and the planet carrier is input, the result from the sun gear will be:

If the planet carrier is held and the ring gear is input, the result from the sun gear would be:

In order to provide reduction, overdrive or reverse, an automatic or powershift transmission uses:

Factors that trigger shifting between gears on an automatic transmissions include:

The shifting of gears in an automatic transmission is actuated by the use of:

The oil pump in an automatic transmission circulates fluid for the purpose of:

An automatic transmission operating with a low oil level may result in:

The grooving of the face of some multiple disc clutch packs:

When stall testing there is a great deal of heat generated.mm

An increase in the transmission input speed from stopped to 800 rpm, will:

An increase in transmission oil temperature will:

When overhauling an automatic transmission you should also:

Which of the following may cause an unusually high temperature in an automatic transmission?

Stall testing is done with:

When stall testing if engine RPM reading is 400 RPM over specifications, what may be the problem?

When performing a stall test and torque converter, if engine RPM is 400 RPM below specifications, which of the answers below, may be the problem?

When performing a stall test on an automatic transmission and torque converter, the engine RPM is 200 RPM below manufacturer''s specifications, which of the answers below may be the problem?

To remove an oil pump from an automatic transmission, a technician must:

When checking fluid from an automatic transmission, a technician should:

Clutches used in automatic transmission are:

Automatic transmission oil pumps are driven by special lugs on the torque converter.

To prevent damage to the transmission from metal particles, some automatic transmissions may use ______________within their oil system routing.

If a passage has restriction that is 50% smaller than the normal passage size and input pressure is 350 psi, then the pressure after the restriction when fluid is flowing would be:

When the system using the restriction described in the previous question has the device applied and the fluid stops flowing, the pressure after the restriction would be:

The purpose of a hydraulic accumulator in a transmission is to prevent damage to the pump if the pressure in the system should fluctuate.

The pressure that relates to the amount of load on the engine is:

The timing of shifts in an automatic transmission is controlled by:

The hydraulic operation of any transmission can be visually described by using:

When checking a transmission, the first item that you should inspect for is:

When hydraulically testing an automatic or powershift transmission, you have to test fluid pressure and:

The most important aspect of transmission repair is:

Before attempting to install your new frictional clutches or bands you should ensure they are correct by _____________________.

It is not necessary to test the equipment after overhaul if you did the job right.

The function of the inhibitor valve in heavy duty powershift transmission is to:

An automatic transmission will not shift into either forward or reverse at an idle. The oil pressure was checked and is normal. What else may be the problem?

When performing a stall test on an automatic transmission and torque converter, the engine RPM exceeds the manufacturer''s specifications by 200 RPM, what may be the problem?

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Heavy-Duty Mechanic - Trucks & Equipment