2413: Chapters 1, 3-5

The two separate shafts in a transaxle are called ___ shafts.

input and output

What is the most basic type of gear?

spur gear

There are two sets of gears in the drive train: the transmission and the

differential

___ vehicles combine features of both rear and front wheel drive systems so power can be delivered to all wheels all the time or when the conditions or driver selects two or four wheel drive.

AWD or 4WD

What is the most common type of synchronizer?

block

The spring used in most pressure plates is a single

diaphragm spring

Asbestos remains the most common facing for clutch discs. (T/F)

false

The Rzeppa CV-joint contains ___ ball bearings.

3 to 6

Which ratio represents the lowest gear ratio?

4:1

Technician A says the protective boot on a CV-joint is made of bellows-type neoprene or silicone in some cases to protect against high temperature extremes. Technician B says the boots can be made from ordinary rubber.

A

Technician A says universal joints allow the drive shaft to change angles in response to rear axle movements. Technician B says universal joints keep the drive shaft length constant as the drive shaft changes angles.

A

There are differences between front-wheel bearings on front-wheel drives and rear-wheel drives. Technician A says most front-wheel drive vehicles use one tapered roller bearing whereas rear-wheel drive vehicles use two. Technician B says most front-wheel drive vehicles use one-piece sealed bearing units.

B

A ___ is used to transfer a uniform torque and a constant speed while operating through a wide range of angles.

CV joint

What is one of the most important components of a FWD drive axle?

CV joint

___ transmissions use a combination of a torque converter and a planetary gear system to change gear ratios automatically.

automatic

___ synchronizers consist of a hub (called a clutch hub), sleeve, blocking ring, and inserts or spring-and-ball detent devices.

block

Technician A says a self-adjusting clutch control cable may adjust itself when the pedal is being depressed. Technician B says self-adjusting cable-type clutches have constant-running release bearings.

both

Technician A says blocking rings are often made of brass or bronze because of the high heat produced by friction. Technician B says some synchronizer rings can contain powdered metal, kevlar, and organic frictional materials.

both

Technician A says most current vehicles with cable clutch linkages are self-adjusting. Technician B says some current vehicles with cable clutch linkages have a manual adjusting system.

both

Technician A says some vehicles have the transmission remotely mounted from the differential. Technician B says the transaxle includes the transmission and final drive.

both

Technician A says the amount of torque steer a vehicle is dependent on the length of the axle shafts. Technician B says a factor that affects torque steer is the amount of power the engine produces.

both

Technician A says the inner race of the Rzeppa CV-joint is connected to the drive axle. Technician B says the ball bearings rotate on a trunnion within the outer housing.

both

Technician A says the most commonly used type of CV-join is the ball type. Technician B says it is the Rzeppa type.

both

Technician A says torsional springs allow the clutch disc and hub to twist slightly. Technician B says torsional springs cushion the sudden load on the disc when it is quickly engaged.

both

The ___ assembly precisely locates the rail and shift fork and provides feel to the driver that a shift has been made.

detent

When a Rzeppa CV joint is modified to become a plunging joint by making the grooves in the inner race longer, it is called a

double-offset CV joint

The ___ assembly transmits torque from the engine and transmission to drive the vehicle's wheels.

drive axle

A viscous clutch is a single-disc clutch assembly housed in a sealed container filled with a special fluid. (T/F)

false

Both gasoline and diesel engines use spark plugs to ignite the air/fuel mixture. (T/F)

false

CV joints are called constant velocity joints because their rotational speed changes with the operational angle. (T/F)

false

Dry dual clutches are used primarily in vehicles with high engine torque. (T/F)

false

In a typical five-speed transmission, there are five synchronizers. (T/F)

false

Most automobiles use a fixed inboard type of CV joint for front-wheel drive. (T/F)

false

Performance flywheels are usually made of nodular cast iron. (T/F)

false

Power is the rate at which a twisting force is applied. (T/F)

false

RWD and transaxle cars use the same type of differentials. (T/F)

false

Rzeppa constant velocity joints are tripod-type CV joints and are usually the outer joints found on most FWD cars. (T/F)

false

The drive axles are supported in the steering knuckle by roller bearings. (T/F)

false

The transmission in a RWD vehicle is also called a transaxle. (T/F)

false

The use of incorrect transmission fluid is unlikely to impact shift quality. (T/F)

false

Unequal drive axles have been found to deliver more torque to the wheel with the longer shaft. (T/F)

false

When the transmission is in overdrive, the input shaft is turning faster than the output (main shaft). (T/F)

false

The primary purpose of a ___ disc is to absorb power impulses from the engine that would otherwise be transmitted directly to the transmission.

flexible

Vehicles with automatic transmissions have ___ instead of flywheels.

flexplates

The ___ acts as a balancer for the engine and it smooths out, or dampens, engine torsional vibrations caused by firing pulses.

flywheel

The clutch cover is bolted to the

flywheel

When the clutch is engaged, spring force clamps the friction disc between the pressure plate and the

flywheel

Synchronizing devices are normally used when shifting into

forward gears

Most automotive engines are ___ cycle engines.

four-stroke

___ are used in transmissions, transfer cases, and differential units to multiply torque.

gears

To combat the adverse effects of torque steer, manufacturers will limit the ___ of their engine to avoid severe torque steer.

horsepower output

What pin moves out of its notch and prevents the other shift rails from moving so that the transmission cannot be in two gears at once?

interlock

Synchronizing devices in the transmission synchronize gears that are about to be

locked

A(n) ___ transmission is an assembly of gears and shafts which transmits power from the engine to the drive axle; changes in gear ratios are controlled by the driver.

manual

On average, ___ outer joints are replaced for every inner joint replacement.

nine

The release levers in the typical coil spring type clutch pivot on the ___ and release lever yokes to move the pressure plate through its engagement and disengagement operations.

pedestals

CV-joints come in a variety of types which can be referred to by

position, function, or design

In the semicentrifugal clutch, the force of the pressure plate against the friction disc increases with vehicle speed because of weights located on the

pressure plate

A ___ transmission is found in vehicles which have a transaxle mounted directly to the rear differential and use a shift shaft located at the front of the transmission.

remote

___ in a transmission that must be meshed to obtain reverse gear; it is used only in reverse, and does not transmit power when the transmission in any other position?

reverse idler gear

Torque is a measurement of ___.

rotating or turning effort

A ___ transmission uses two or more shafts mounted in parallel, with sliding spur gears arranged to mesh with each other to provide a change in speed or direction.

sliding gear

In the diaphragm-spring clutch, forward movement of the throw-out bearing causes the diaphragm spring to

straighten

Improved ___ designs have allowed for a shorter spindle length and a smaller tire scrub, both key aids to controlling torque steer.

strut

A ___ transmission is a constant mesh, collar shift transmission with synchronizers that equalize the speed of the shaft and gear before they are engaged.

synchromesh

A bell housing is another name for a clutch housing. (T/F)

true

A five-speed transmission is usually a four-speed plus an overdrive or fifth gear. (T/F)

true

A modern internal combustion engine only produces power during one of the four strokes. (T/F)

true

A transaxle for a front-wheel drive car is usually mounted cross-wise in the engine. (T/F)

true

Advanced synchronizer designs may use multiple cones to increase the capacity of the unit while making it smaller. (T/F)

true

All synchronizers use friction to synchronize the speed of the gear and shaft before the connection is made. (T/F)

true

Clutches are used on traditional and self-shifting manual transmissions. (T/F)

true

Dual clutches used in self-shifting manual transmission designs improve shifting quality and driveability. (T/F)

true

Idler gears are uninvolved with 'driving' anything; they are used to reverse the direction of rotation. (T/F)

true

Many AWD vehicles are based on FWD platforms. (T/F)

true

Modern engines are internal combustion engines - the burning of the air/fuel mixture takes place inside of the engine. (T/F)

true

Most vehicles have staggered alignment angles to compensate for road crown. (T/F)

true

Outer joints typically wear at a higher rate than inner joints because of the increased range of operating angles to which they are subjected. (T/F)

true

Synchronizer rings server as core clutches using friction to match speed gear RPM to output shaft RPM. (T/F)

true

The clutch assembly is placed between the engine and transmission on nearly all cars and trucks. (T/F)

true

The clutch disc is covered with frictional material on both sides. (T/F)

true

The clutch shaft extends from the front of the transmission and is splined. (T/F)

true

The drive shaft is connected at one end to the transmission and at the other end to the rear axle. (T/F)

true

The forward gears of all current automotive transmissions are synchronized. (T/F)

true

The gears in a manual transmission are locked to their shafts by a dog clutch. (T/F)

true

The two basic varieties of CV joints are the ball-type and the tripod-type joints. (T/F)

true

Torque converters use fluid flow to transfer motion from the engine to the transmission. (T/F)

true

Torque may be described as twisting power. (T/F)

true

Torque steer is more prominent on FWD vehicles with high-output engines. (T/F)

true

___ is the trade name for a new gear change system from the UK that replaces normal synchronizers to provide a change in gear ratios without interrupting the flow of engine torque to the wheels.

zeroshift

The four major systems or basic components of an automobile include the engine, drive train, the chassis, and the ___.

car's body, interior, and accessories

A ___ assembly is used to connect and disconnect the engine from the transmission.

clutch

Which component is the driven member of the clutch assembly?

clutch disc

The ___ is a Y-shaped member into which the release bearing is attached.

clutch fork

What are the main components of the drive train?

clutch, transmission, differential, and drive axles

A ___ transmission has parallel shafts fitted with gears in constant mesh.

collar shift

Which is the correct cycle for a modern four-stroke engine?

combustion, exhaust, intake, compression

A ___ is a unit which replaces the conventional release fork, pivot ball, linkage, and throw-out bearing.

concentric slave cylinder

A(n) ___ transmission is a transmission without fixed forward speeds.

continuously variable

Like the Rzeppa CV joint, the ___ uses six balls in a cage and inner and outer races.

cross-groove CV joint