Question 1

All of the following are the advantage of using the CVT in the vehicle except:
A) It greatly helps in emission control.
B) The transmission can infinitely change the gear ratio within its operational design.
C) It offers a smooth, step-less transmission.
D) This design allows the engine to operate in its most efficient operating rpm range for fuel economy or performance.

Accepted Answer

CVT (Continuously Variable Transmission) does not directly help in emission control. It primarily focuses on providing smooth acceleration and maintaining optimal engine performance for fuel efficiency.

Question 2

The CVT most commonly found in hybrid vehicles is known as:
A) toroidal CVT.
B) Reeves drive CVT.
C) roller-based CVT.
D) ECVT.

Accepted Answer

ECVT, or Electronic Continuously Variable Transmission, is the type of CVT most commonly used in hybrid vehicles, as it integrates with the electric motor and internal combustion engine for efficient power management.

Question 3

Choose the correct statement with respect to variable-diameter pulley CVT.
A) It uses two variable-diameter pulleys.
B) It is the least common CVT.
C) Most manufacturers prefer a rubber belt over a steel belt between the pulleys.
D) The drive ratio from a stop is approximately 1:1 through the pulleys.

Accepted Answer

Variable-diameter pulley CVTs use two variable-diameter pulleys to change the drive ratio continuously.

Question 4

At high speed, the gear ratio of the pulleys is:
A) 1:1.
B) 2:1.
C) 3:1.
D) 1:2.

Accepted Answer

The answer of At high speed, the gear ratio of...

Question 5

The belt can be replaced using a(n):
A) impact gun.
B) pry bar.
C) compression tool.
D) seal puller.

Accepted Answer

A compression tool is used to replace the belt.

Question 6

Choose the correct statement with respect to a toroidal CVT.
A) It is cheap to manufacture.
B) It can handle larger amounts of torque.
C) Its design uses two curved discs-an input disc and an output disc.
D) A universal transmission fluid is best suited for this CVT.

Accepted Answer

Its design uses two curved discs-an input disc and an output disc.

Question 7

Which of the following allow the transmission to operate in reverse?
A) Clutch packs
B) Sensors
C) Levers
D) Torque converters

Accepted Answer

Clutch packs allow the transmission to operate in reverse by engaging the reverse gear.

Question 8

Choose the correct statement.
A) Pressure in a CVT can be measured using a traditional transmission pressure gauge.
B) The peak operating pressure in a typical CVT is around 250 psi (1724 kPa).
C) Many CVTs have a special transmission oil heater built into them.
D) Universal CVT fluid is not recommended for any CVT.

Accepted Answer

The answer of Choose the correct statement.
A) Pressure in a...

Question 9

Tech A states that CVTs should not be rebuilt and should only be replaced with complete units. Tech B states that some manufacturers do not recommend rebuilding their CVTs. Who is correct?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Accepted Answer

The answer of Tech A states that CVTs should not...

Question 10

Tech A states that special tools will be required to replace the belt in a CVT. Tech B states that CVT belts can be rebuilt by specialty shops. Who is correct?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Accepted Answer

The answer of Tech A states that special tools will...

Question 11

Tech A states that CVTs utilize very specific transmission fluid that should not be substituted. Tech B states that universal CVT fluid will work in all CVTs. Who is correct?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Accepted Answer

CVTs require specific transmission fluids designed for their unique mechanisms, and using the wrong fluid can cause damage. Universal CVT fluids may not meet the specific requirements of all CVT systems.

Question 12

Tech A states that toroidal CVTs are commonly sold by manufacturers. Tech B states that toroidal transmissions are expensive to manufacture. Who is correct?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Accepted Answer

Toroidal transmissions are indeed expensive to manufacture due to their complex design and precision requirements, which is why they are not commonly sold by manufacturers.

Question 13

Tech A states that some manufacturers display transmission fluid life on the scan tool. Tech B states that CVTs typically require fluid service between 60K and 80,000 miles (128,748 km). Who is correct?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Accepted Answer

Some manufacturers do display transmission fluid life on the scan tool, and CVTs typically require fluid service between 60,000 and 80,000 miles.

Question 14

Tech A states that some CVTs offer a low range gear for extra torque when needed. Tech B states that many CVTs utilize a cogged rubber belt for the drive belt. Who is correct?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Accepted Answer

Some CVTs are designed with a low range gear to provide extra torque when necessary, especially in vehicles that require additional power for tasks like towing or off-road driving.

Question 15

Tech A states that manufacturers use CVTs in order to increase fuel economy. Tech B states that CVTs are designed to keep an engine operating at its most efficient RPM. Who is correct?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Accepted Answer

Both Tech A and Tech B are correct. CVTs (Continuously Variable Transmissions) are used to improve fuel economy by allowing the engine to run at its most efficient RPM, which is what Tech B states. This efficiency contributes to better fuel economy, supporting Tech A's statement.

Question 16

All of the following statements are true with respect to belt service except:
A) Belts need to be replaced if there are any signs of wear on them.
B) Transmission can compensate for a small amount of wear in its normal programming.
C) Replacement of the belt is direction oriented.
D) Replace only the individual component that has been damaged in the belt.

Accepted Answer

Belts are typically replaced as a whole unit rather than just the damaged component, as replacing only part of a belt can lead to imbalance and further issues.

Question 17

The variator assembly should be replaced in all of the following conditions except:
A) sheave damage.
B) drive belt wear.
C) shaft damage.
D) transmission fluid contamination.

Accepted Answer

The answer of The variator assembly should be replaced in...

Question 18

Tech A states that fluid pressure in a CVT should be checked with a transmission pressure gauge. Tech B states that pressures in a CVT will often exceed the range of a traditional gauge and will require the use of a pressure transducer. Who is correct?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Accepted Answer

Pressures in a CVT will often exceed the range of a traditional gauge and will require the use of a pressure transducer.

Question 19

Tech A states that when replacing a CVT belt the sheaves should be checked for wear. Tech B states that the bearings might require replacement when replacing the belt. Who is correct?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Accepted Answer

Both technicians are correct. When replacing a CVT belt, it's important to check the sheaves for wear as they can affect belt performance. Additionally, the bearings might also require replacement to ensure the smooth operation of the CVT system.

Question 20

Tech A states that a CVT belt must be installed in the correct direction or the transmission will slip. Tech B states that CVT belts are lubricated using splash lubrication from the transmission case. Who is correct?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Accepted Answer

CVT belts must be installed in the correct direction to ensure proper operation and prevent slipping.

Quiz 21: Continuously Variable Transmissions

All of the following are the advantage of using the CVT in the vehicle except:

The CVT most commonly found in hybrid vehicles is known as:

Choose the correct statement with respect to variable-diameter pulley CVT.

At high speed, the gear ratio of the pulleys is:

The belt can be replaced using a(n) :

Choose the correct statement with respect to a toroidal CVT.

Which of the following allow the transmission to operate in reverse?

Choose the correct statement.

Tech A states that CVTs should not be rebuilt and should only be replaced with complete units. Tech B states that some manufacturers do not recommend rebuilding their CVTs. Who is correct?

Tech A states that special tools will be required to replace the belt in a CVT. Tech B states that CVT belts can be rebuilt by specialty shops. Who is correct?

Tech A states that CVTs utilize very specific transmission fluid that should not be substituted. Tech B states that universal CVT fluid will work in all CVTs. Who is correct?

Tech A states that toroidal CVTs are commonly sold by manufacturers. Tech B states that toroidal transmissions are expensive to manufacture. Who is correct?

Tech A states that some manufacturers display transmission fluid life on the scan tool. Tech B states that CVTs typically require fluid service between 60K and 80,000 miles (128,748 km) . Who is correct?

Tech A states that some CVTs offer a low range gear for extra torque when needed. Tech B states that many CVTs utilize a cogged rubber belt for the drive belt. Who is correct?

Tech A states that manufacturers use CVTs in order to increase fuel economy. Tech B states that CVTs are designed to keep an engine operating at its most efficient RPM. Who is correct?

All of the following statements are true with respect to belt service except:

The variator assembly should be replaced in all of the following conditions except:

Tech A states that fluid pressure in a CVT should be checked with a transmission pressure gauge. Tech B states that pressures in a CVT will often exceed the range of a traditional gauge and will require the use of a pressure transducer. Who is correct?

Tech A states that when replacing a CVT belt the sheaves should be checked for wear. Tech B states that the bearings might require replacement when replacing the belt. Who is correct?

Tech A states that a CVT belt must be installed in the correct direction or the transmission will slip. Tech B states that CVT belts are lubricated using splash lubrication from the transmission case. Who is correct?