Manual Transmission/Transaxle Principles Final Exam-Attempt 1

Technician A says some manual transmissions are shifted electronically. Technician B says a scan tool may be required to diagnose electronically controlled transmissions. Who is correct?

-Some manual transmissions are shifted electronically. A scan tool may be required to diagnose these transmissions. -Both Technician A and Technician B

Technician A says synchronizer assemblies have grooves that mate to the shaft by the use of splines. Technician B says stationary parts may be held in place with snap rings. Who is correct?

-Synchronizers are often held stationary on the shaft by the use of splines. Stationary parts of a manual transmission may be held in place with snap rings. - Neither

Technician A says the final drive assembly almost always has a gear ratio of 1:1. Technician B says the final drive assembly provides further gear reduction between the transmission and the drive wheels. Who is correct?

-The final drive assembly provides further gear reduction between the transmission and the drive wheels. - Technician B

Technician A says synchronizers are used to match the clutch and input shaft speeds to provide easier gear changes. Technician B says a synchronizer matches gear speed with shaft speed. Who is correct?

A synchronizer matches gear speed with shaft speed. - Technician B

All gear ratios are calculated by the formula:

All gear ratios are calculated by the formula of the driven gear divided by the drive gear.

Which of the following components are used to support and align the shafts in a manual transmission?

Bearings are used to support and align the shafts in a manual transmission.

Drive axles used with front-wheel drive transaxles are called:

Drive axles used with front-wheel drive transaxles are called half shafts.

Every component in a manual transmission drivetrain requires lubrication according to the manufacturer's specifications:

Even after the warranty has expired.

The clutch is designed to:

In a manual transmission vehicle, the component that locks the engine and transmission together is the clutch system. The engine is connected to the clutch, and the clutch is connected to the transmission.

How does the lubricant helps to cool a transmission's internal components?

It provides a thin film on the moving parts to reduce metal-to-metal contact.

Referring to transfer cases, all of the following statements are true, EXCEPT:

Power is always directed to both front and rear axles

Technician A says spur gears have angled teeth that are cut on an angle to the shaft. Technician B says spur gears run more quietly than helical gears. Who is correct?

Spur gears have straight teeth that are parallel to the shaft the gear turns. Helical gears operate more quietly and are more commonly used in passenger vehicles.

Technician A says a manual transmission must always be lubricated with the exact gear oil or fluid specified by the manufacturer. Technician B says other fluids or gear oils may be used once the vehicle is out of warranty. Who is correct?

Technician A

When discussing gear ratios, Technician A says total work (force × distance) will be the same regardless of the gear ratio. Technician B says total work increases proportionately when the mechanical advantage is increased. Who is correct?

Technician A

Which of the following is the first driveline component to receive power from the engine in a manual transmission vehicle?

The clutch

The gears in the final drive assembly that allow the left and right drive wheels to turn at different speeds are called:

The gears in the final drive assembly that allow the left and right drive wheels to turn at different speeds are called the differential gears.

The purpose of the final drive assembly is to:

The purpose of the final drive assembly is to increase torque from the transmission.

When tracing the power flow from the engine to the drive wheels, what transmits power directly to the transmission input shaft?

When the clutch is released or the pedal is in the up position, the clutch transmits power from the flywheel to the transmission/transaxle.

The final drive unit is used to provide gear reduction and also to:

change the direction of the power delivered to the drive wheels

As transmission gear ratios are changed, output torque and output speed also change. If output speed is increased, output torque:

is decreased.

The driven gear in a final drive assembly is the:

ring gear

Technician A says solid drive axles MAY be used with independent suspension systems. Technician B says half-shaft drive axles MUST be used with independent suspension systems. Who is correct?

the first type is the independent suspension drive axle. It uses one half-shaft axle for each of the two wheels. These axles must flex to allow suspension movement, so they incorporate what is called constant velocity (CV) joints.

All of the following are used by auto manufacturers when selecting the final drive gear ratio, EXCEPT

the suspension's standing height.

All of the following is affected by the gear ratio of the final drive assembly EXCEPT:

transmission shift patterns