Auto Trans Test 1
A 60 tooth gear is driving a 20 tooth gear. What is the gear ratio? 0.333:1 0.667:1 1:1 2:1 3:1 4:1 6:2
0.333:1
A 36 tooth gear is driving a 24 tooth gear. What is the gear ratio? 0.333:1 0.667:1 1:1 2:1 2.333:1 3:1 4:1 2:3
0.667:1
A transmission is equipped with a torque converter oil pressure relief valve. What is a common pressure that will cause this valve to open? 100 psi 50 psi 300 psi 175 psi 200 psi
100 psi
What is the typical "oil pressure" found in a torque converter? 150 to 200 psi 50 to 115 psi 200 to 300 psi 15 to 75 psi
15 to 75 psi
The lockup torque converter began to be used again in the automotive industry by Chrysler in what year? 1971 1978 1972 1975
1978
A typical automotive torque converter will have approximately what torque multiplication ratio? 3.5:1 2.5:1 4.5:1 1.5:1
2.5:1
A stall test has been performed. The specification is 2550 RPM. All the RPMs were okay except for Reverse. A reverse band is suspected as being bad. What was the RPM in reverse? 2250 RPM 2850 RPM 2550 RPM
2850 RPM
What is an example of the amount of torque that a torque converter can build at breakaway? 4.5:1 3.5:1 2.5:1 1.5:1
3.5:1 2.5:1 1.5:1
A torque converter stall test has just been performed. The transmission has just been shift to neutral for cooling. What is the minimum amount of time the automobile should be run in neutral for cooling? 15 seconds 2 minutes 30 seconds 60 seconds 5 seconds
30 seconds
If testing a TCC with a car on a lift, you should not exceed what speed on the speedometer? 80 mph 60 mph 40 mph 30 mph
60 mph
Which diameter torque converter will have the highest stall speed? 10" diameter torque converter 8" diameter torque converter 9" diameter torque converter
8" diameter torque converter
Which of the following types of transmissions will gain popularity in the future? 3, 4, & 5 speeds manual transmissions 8, 9 & 10 speeds
8, 9 & 10 speeds
A Stall test finds that the Stall RPM is below spec in all forward drive ranges. Technician A believes the stator is not locking. Technician B believes the engine could be at fault. Who is correct? Technician B Neither Technician A nor Technician B Both Technician A and Technician B Technician A
Both Technician A and Technician B
A car with a possible faulty TCC is being diagnosed. Technician A states that a tachometer should be used to see if the TCC releases. The Engine RPM should slightly increase when the TCC releases. Technician B states to drive at a light load 50 to 55 mph, then gently tap the brake pedal, you should feel a slight bump. Who is correct? Technician A Neither Technician A nor Technician B Technician B Both Technician A and Technician B
Both Technician A and Technician B
A technician is adding a supplementary filter to the oil cooler circuit. Technician A states to be sure that the filter contains a by-pass valve. Technician B states to install the filter before the cooler to prevent contaminants from entering the cooler. Who is correct? Technician A Neither Technician A nor Technician B Both Technician A and Technician B Technician B
Both Technician A and Technician B
A transmission oil cooler might be plugged. Technician A states that the fluid can become overheated. Technician B states to perform a flow test to determine for sure if the cooler is plugged. Who is correct? Both Technician A and Technician B Technician A Neither Technician A nor Technician B Technician B
Both Technician A and Technician B
An SUV with a TCC has poor acceleration from a stop. The SUV performs well at speeds above 30-35 mph. Technician A says that the transmission may not be starting in 1st gear. Technician B says that the exhaust might be plugged. Who is correct? Both Technician A and Technician B Neither Technician A nor Technician B Technician B Technician A
Both Technician A and Technician B
An automatic transmission was just bolted up to the engine and the converter won't turn. Technician A says that the converter lugs could be mis-aligned with the pump. Technician B says that the front pump drive gear could be installed wrong. Who is right? Technician B Technician A Neither Technician A nor Technician B Both Technician A and Technician B
Both Technician A and Technician B
Technician A says that the automatic transmission front pump operates when the engine is cranking. Technician B says that the front pump is driven by drive lugs (dogs) on the end of the torque converter housing. Technician B Both Technician A and Technician B Technician A Neither Technician A nor Technician B
Both Technician A and Technician B
Technician A states that TCCs can use damper springs or a viscous clutch to absorb engine vibration. Technician B states all TCCs require some type of damper assembly. Who is correct? Neither Technician A nor Technician B Both Technician A and Technician B Technician A Technician B
Both Technician A and Technician B
Technician A states that a lockup converter can deliver torque hydraulically. Technician B states that a lockup converter can deliver torque mechanically. Who is correct? Both Technician A and Technician B Neither Technician A nor Technician B Technician A Technician B
Both Technician A and Technician B
Technician A states that a shorted wire can cause a TCC not to apply. Technician B states that a stuck apply valve can cause a TCC not to release. Who is correct? Both Technician A and Technician B Neither Technician A nor Technician B Technician B Technician A
Both Technician A and Technician B
Technician A states that a torque divider are used in Caterpillar dozers. Technician B states that torque dividers use a planetary gear set inside a torque converter. Who is correct? Technician A Both Technician A and Technician B Neither Technician A nor Technician B Technician B
Both Technician A and Technician B
Technician A states that an amboid gearset is a bevel gearset. Technician B states that a hypoid gearset is a bevel gear set. Who is correct? Technician B Neither Technician A nor Technician B Technician A Both Technician A and Technician B
Both Technician A and Technician B
If an automatic transmission does not have a rear oil pump ______________________. oil will not be circulated through the transmission, unless the engine is running Neither, it can be push started and oil is still circulated Both it cannot be push started and oil will not be circulated it cannot be push-started
Both it cannot be push started and oil will not be circulated
Which of the following transmissions does not shift gears, but changes ratios by adjusting two pulleys? traditional manual transmission traditional automatic transmission HEV CVT DCT
CVT
Which of the following transmissions combines an electric motor with an ICE? CVT DCT HEV traditional manual transmission traditional automatic transmission
HEV
An automobile equipped with a TCC slips in reverse. Technician A states that the planetary gear set is worn. Technician B states that the TCC could be worn. Who is correct? Technician A Neither Technician A nor Technician B Both Technician A and Technician B Technician B
Neither Technician A nor Technician B
A TCC in the lock up mode will transmit power through which of the following power flows? impeller, to turbine, to piston plate/damper assembly, to transmission input shaft T/C housing, to piston plate/damper assembly, to turbine/transmission input shaft assembly
T/C housing, to piston plate/damper assembly, to turbine/transmission input shaft assembly
An automobile performs poorly from a start. However, the engine has been tested and found good. Plus the car performs well above 35 mph. Technician A states that the torque converter could be at fault. Technician B states that the transmission's front pump might be worn. Who is correct? Neither Technician A nor Technician B Both Technician A and Technician B Technician A Technician B
Technician A
Technician A states that TCCs can apply in 3rd-5th gear on most 5 speed automatic transmissions. Technician B states that TCCs can apply in all forward gears on most 6-speed automatic transmissions. Who is correct? Technician A Technician B Both Technician A and Technician B Neither Technician A nor Technician B
Technician A
Technician A states that construction equipment transmissions can be categorized into two classifications "cycling" and "hauling". Technician B states that off road power shift transmissions typically have only one reverse speed. Who is correct? Technician B Both Technician A and Technician B Technician A Neither Technician A nor Technician B
Technician A
Technician A states to disconnect the battery ground cable when removing a torque converter from a car. Technician B states to unbolt the flex plate from the engine when removing a torque converter from a car. Who is correct? Technician A Technician B Neither Technician A nor Technician B Both Technician A and Technician B
Technician A
A car makes a noise when driving. Technician A states that a planetary gear with a broken tooth would cause noise in all forward gears. Technician B states that bad speedometer gear could cause noise in all forward gears? Who is correct? Technician A Technician B Both Technician A and Technician B Neither Technician A nor Technician B
Technician B
A helical gear has a broken tooth. Technician A states that it requires replacing the mating gear. Technician B states it only requires replacing the gear with the broken tooth (assuming the mating gear appears okay). Who is correct? Technician A Technician B Both Technician A and Technician B Neither Technician A nor Technician B
Technician B
Technician A states that agricultural power shift transmissions typically use torque converters. Technician B states that off road power shift transmissions require the drive to control the upshifting and down shifting. Who is correct? Technician A Neither Technician A nor Technician B Technician B Both Technician A and Technician B
Technician B
Technician A states that oil cooler cleaning requires a flushing machine. Technician B states that oil cooler flushing machines that heat the cleaning solution help remove wax deposits. Who is correct? Technician B Neither Technician A nor Technician B Both Technician A and Technician B Technician A
Technician B
Which ONE of the following listed below is NOT a common style of final drive used to multiply torque in a traditional automatic transaxle? helical spiral bevel V belt planetary
V belt
A direct mechanical AOD converter, uses which of the following to reduce slippage? hydraulic applied piston planetary gear set a 2nd input shaft
a 2nd input shaft
An automatic transmission has a noise in all gears that sounds like a rod knock. The MOST likely cause is: bent linkage the oil pump driven gear is installed upside down a cracked flex plate excessive input shaft endplay
a cracked flex plate
A small input gear driving a large output gear will result in what? a speed decrease a speed increase a torque decrease
a speed decrease
Which one of the following machine (technologies) rarely uses a torque converter? agricultural tractors buses automotive construction equipment
agricultural tractors
A TCC system would include? throttle position sensor all of these answers are correct electronic control module vehicle speed sensor
all of these answers are correct
The differential's purpose is to? decrease output shaft torque speed up the output shaft provide an additional torque multiplication allow the inside wheel to turn slower during a turn
allow the inside wheel to turn slower during a turn
The textbook recommends placing a supplementary air-to-oil transmission cooler, where? before the OEM cooler after the OEM cooler
before the OEM cooler
Which gear set will transfer power at a 90 degree angle? helical gear set spur gear set bevel gear set
bevel gear set
All of the following below must be met before the TCC will apply EXCEPT which ONE? 40 mph brakes applied engine temp 130 F light vehicle load proper transmission gear
brakes applied
The final drive within a RWD equipped vehicle has ONE more additional purpose, which is to? decrease output shaft torque change power flow at a right angle speed up the output shaft allow the inside wheel to turn slower during a turn
change power flow at a right angle
When viewing the impeller from the front (such as standing at the front of the engine), which direction will the impeller rotate? counter clockwise clockwise
clockwise
What is the device that drives the transmission's oil pump? impeller shaft turbine shaft converter drive hub input shaft
converter drive hub
The transmission oil cooler is usually located in the? dash coolest tank of the radiator operator cabin oil pan
coolest tank of the radiator
What do lock-up converters require that is not required in a conventional torque converter? oil cooler damper assembly increased fuel pressure
damper assembly
During lock up mode, power flow is physically being transmitted? damper springs through the fluid drive
damper springs
Today's engines multiply torque in THREE different POWERTRAIN locations. Which ONE of the following below WILL NOT multiply torque? torque converter differential transmission gear set final drive
differential
Anytime a simple planetary gear set has one input and the remaining two gears coupled together, the resulting power flow will be? direct drive over drive torque multiplication neutral
direct drive
Anytime a simple planetary gear set has two inputs at the same speed in the same direction, the resulting power flow will be? direct drive over drive torque multiplication neutral
direct drive
When will the stator unlock? in passing gear under acceleration during stall during coupling speed
during coupling speed
A TCC in lock-up mode will? increase engine RPM eliminate torque converter hydraulic slippage multiply torque decrease transmission output shaft speed
eliminate torque converter hydraulic slippage
A vehicle is having a torque converter stall test performed. If the input shaft splines were worn, which of the following would most likely be the result? engine RPM was much higher than specification 33% lower RPM specified engine RPM
engine RPM was much higher than specification
Which one of the following parameters will cause the TCC piston to UNLOCK? vehicle speed increases to 55 mph engine temperature drops to 110 degrees F upshifts to 3rd gear (when using a 3-speed transmission)
engine temperature drops to 110 degrees F
A TCC facing has too much wear. The torque converter is being replaced. The technician should also perform what task? neither flush the cooler nor increase throttle pressure increase throttle pressure both flush the cooler and increase throttle pressure flush the oil cooler
flush the oil cooler
Which of the following is used to sense vehicle speed? throttle pressure governor pressure
governor pressure
Which of the following gear sets is known to be quiet and performs well at high speeds? straight bevel gear spur gear helical gear
helical gear
All of the following will cause a TCC to release EXCEPT which ONE? heavy torque demand closed throttle or coast cnoditions high engine coolant temperature brakes applied
high engine coolant temperature
The formula: torque times RPM divided by 5252 equals what? horsepower tractive effort force slip pressure
horsepower
Which of the following below is the most popular method used in late model automatic transmissions to achieve a 1:1 coupling within a torque converter? direct mechanical torque converter hydraulically applied clutch piston centrifugal locking clutch planetary splitter
hydraulically applied clutch piston
Fluid couplings and torque converters are what style of fluid drive? hydrostatic drive hydrodynamic drive
hydrodynamic drive
Which one of the following fluid drives propels using low pressures? hydrodynamic drive hydrostatic drive
hydrodynamic drive
Which one of the following fluid drives uses high pressures? hydrostatic drive hydrodynamic drive
hydrostatic drive
Which one of the following components rotates at engine RPM? impeller turbine stator
impeller
A TCC couples what two components? impeller and turbine impeller and stator turbine and stator
impeller and turbine
During conditions of high vortex oil flow, the _____________________________. impeller and turbine will be at significant speed differences impeller and stator will be at within 90% of the same speed impeller and turbine will be within 90% of the same speed stator will be unlocked
impeller and turbine will be at significant speed differences
During conditions of high rotary oil flow, the ___________________? impeller and turbine will be within 90% of the same speed impeller and turbine will be at significant speed differences impeller and stator will be significant speed differences stator will be locked
impeller and turbine will be within 90% of the same speed
A supplementary transmission oil cooler will be added to a car. How should it be installed in relation to the OEM oil cooler? in parallel in series
in series
Regarding a transmission, which ONE of the following descriptions will a transmission NOT be able to perform? change direction of propulsion modify torque increase horsepower modify speed
increase horsepower
What was the main reason lock up torque converters became popular? increase torque smoother converter operation to eliminate chatter increased fuel economy
increased fuel economy
When a machine is configured with a three stage torque converter, what does the term "stage" refer to? it is the number of impellers located in the torque converter it is the number of times the oil circulates back to the turbine before returning to the impeller it refers to the speed relationship between the impeller and turbine
it is the number of times the oil circulates back to the turbine before returning to the impeller
How much torque does an engine produce at low RPM? zero same amount as high RPM maximum minimal
minimal
Which one of the following is an input clutch? multiple disc clutch band roller clutch sprag clutch
multiple disc clutch
Which one of the following is NOT a role for torque converters? smooth engine rotation multiply speed drive oil pump multiply torque absorb torsional vibration automatic clutch
multiply speed
Torque converter clutches produce all of the following advantages EXCEPT? improve fuel economy multiply torque improve efficiency reduce transmission operating temperatures eliminates 10% slip reduce engine RPM during highway operation
multiply torque reduce engine RPM during highway operation
Does the torque converter turbine know which direction the vehicle is driving? yes no
no
After fluid leaves the torque converter, where is it sent next? transmission lubrication circuit oil pump manual valve oil cooler
oil cooler
Automobile's final drive has how many gear ratios? one two zero three
one
During conditions of high vortex, the ____________________________. one-way clutch is locked stator directs fluid back to the turbine one-way clutch is unlocked
one-way clutch is unlocked
Anytime the planetary carrier is the input, what would be the power flow? over drive torque multiplilcation reverse
over drive
A simple planetary gear set is being powered in a fast reverse, which member is held? sun gear planetary carrier ring gear
planetary carrier
A simple planetary gear set is being powered in a slow reverse, which member is held? sun gear planetary carrier ring gear
planetary carrier
A simple planetary gear set is being powered in fast Over Drive, which member is input? sun gear planetary carrier ring gear
planetary carrier
A simple planetary gear set is being powered in slow Over Drive, which member is input? sun gear planetary carrier ring gear
planetary carrier
A simple planetary gear set is being powered in the forward slowest speed (torque multiplication), which member is output? (think of the tractor axle) sun gear planetary carrier ring gear
planetary carrier
When figuring power flows, which of the following is considered the middle sized gear? ring gear sun gear planetary carrier
planetary carrier
Which of the following gears in a planetary gear set is pinned to the planetary carrier? ring gear planetary pinion gear sun gear
planetary pinion gear
The final drive's purpose is to receive torque and speed output of the transmission and what? provide an additional torque multiplication decrease output shaft torque allow the inside wheel to turn slower during a turn speed up the output shaft
provide an additional torque multiplication
A torque converter drain back issue is suspected on a transmission, a TSB provides a recommendation. Which one of the following is most likely the suggested solution? installing a new torque converter re-flashing the TCM replacement of the oil cooler line with a check valve
replacement of the oil cooler line with a check valve
A simple planetary gear set is being powered in fast reverse, which member is input? sun gear planetary carrier ring gear
ring gear
When figuring power flows, which of the following is considered the largest gear? sun gear planetary carrier ring gear
ring gear
Which one of the following "oil flows" is predominant when centrifugal force throws oil to the outside perimeter of the converter, trapping fluid between the blades of the impeller and the turbine, causing the torque converter to act like a fluid clutch? vortex rotary
rotary
Which one of the following acts like a hydraulic switch that controls two separate planetary control members? relief valve shuttle valve regulator valve shift valve
shift valve
A vehicle had a torque converter stall test performed, the test yielded results that were 200 to 300 RPM higher than normal in Reverse, but were okay in D, 2 and L. Which one of the following is most likely the cause? slipping manual low band slipping forward clutch slipping reverse clutch low main line pressure overrunning stator one-way clutch aerated fluid
slipping reverse clutch
For a fixed amount of horsepower, if the torque is decreased, what will occur? speed will decrease speed will stay the same speed will increase
speed will increase
What is the name of the device incorporated into a torque converter that eliminates oil turbulence? reverse guide ring split guide ring oil directing ring
split guide ring
When will a torque converter have its highest torque multiplication ratio? starting from a stop cruising 60 mph
starting from a stop
Which of the following components is located in a torque converter, but not a conventional fluid coupling? impeller turbine stator
stator
Which one of the following components can be considered a recycler? turbine stator impeller
stator
Fluid couplings have what style of finned members? curved blades straight blades
straight blades
A simple planetary gear set is being powered in a forward Torque Multiplication (but the faster mode reduction, for example 2nd gear), which member is held? sun gear planetary carrier ring gear
sun gear
A simple planetary gear set is being powered in fast reverse, which member is output? sun gear planetary carrier ring gear
sun gear
A simple planetary gear set is being powered in slow reverse, which member is input? sun gear planetary carrier ring gear
sun gear
Which of the following gears in a planetary gear set is located in the very center of the gear set? planetary pinion gear planetary carrier sun gear ring gear
sun gear
A car makes a noise when driving. Tech A states that a planetary gear with a broken tooth would cause noise in all forward gears. Tech B states that bad speedometer gear could cause noise in all forward gears Who is correct? Tech A tech B Both A and B Neither A nor B
tech B
An older style hydraulically controlled TCC uses a FAIL SAFE VALVE that will release the TCC when it receives which of the following oil pressures? throttle pressure reverse clutch pressure line pressure governor pressure
throttle pressure
Which of the following is used to sense engine load? governor pressure throttle pressure
throttle pressure
TCCs can exhibit numerous different symptoms and problems. Which ONE of the following is NOT a TCC symptom failure to release failure to apply early application too harsh of engagement too smooth of engagement shudder
too smooth of engagement
If a supplementary oil cooler is installed incorrectly, during a cold winter day, the ATF fluid viscosity can become? too thick too thin
too thick
Which of the following descriptors can be defined as a twisting force or a turning effort applied to a radius or arcing motion? horsepower pressure speed torque
torque
The maximum torque a transmission can adequately handle is referred to as? torque capacity torque ability minimal torque reserve torque
torque capacity
When diagnosing a TCC problem, the technician determined that the oil cooler pressure changed appropriately, but the TCC did not apply. What is most likely at fault? torque converter TCC solenoid TCC hydraulic valve TCC control circuit
torque converter
For a fixed amount of HP, if the speed is increased, what happens? torque decreases torque remains the same torque increases
torque decreases
Anytime the planetary carrier is the output, what would be the power flow? over drive torque multiplication reverse
torque multiplication
For a fixed amount of horsepower, if the speed is decreased, what will occur? torque will increase torque will decrease torque will remain the same
torque will increase
A dual-clutch transmission uses what type of power transmission? traditional synchronizer manual transmission a metal V-belt planetary gear sets
traditional synchronizer manual transmission
Choose the descriptor below that can be defined as "A transmission and final drive unit combine into a single unit" RWD transaxle power train
transaxle
The torque converter turbine drives which one of the following components? front pump stator support shaft transmission input shaft impeller stator
transmission input shaft
In a lockup style converter, which of the members will lock (directly or indirectly) to the converter cover any time the TCC is applied? turbine impeller stator
turbine
Which of the following torque converter members is considered the output member of the torque converter? stator impeller turbine one-way clutch
turbine
Which one of the following components rotates at the same speed as the transmission input shaft speed? stator impeller turbine
turbine
Which one of the following members in a torque converter has the most curvature in the vanes? impeller turbine
turbine
