ASE 224

When removing or installing bearings, force should be applied to the inner race(for inner bearing removal) or the outer race (for outer bearing removal) using a suitable tool to avoid damage.

Both depending on the situation

In a transaxle, the pinion gear on the pinion shaft meshes with the_____.

Ring gear

When an idler gear is placed between the driving and driven gears, the driven gear:

Same direction

A reverse idler gear changes the direction of torque flow to the opposite direction of engine rotation. T/F

True

A set of gears can be configured or used in three different ways. T/F

True

Bearing noise increases under load and is usually described as a growl that gets louder with speed.

True

Chatter is caused by liquid contaminants on the friction surfaces.

True

Clutch drag occurs if the clutch disc is not completely released when the clutch pedal is fully depressed.

True

Clutch slippage occurs when the clutch disc is not gripped firmly between the flywheel and the pressure plate.

True

Many manufacturers specify replacing the DMF (dual-mass flywheel) as part of clutch replacement.

True

Particles of cotton, brass, rope, and wire are added to prolong the life of the clutch disc and provide torsional strength.

True

Some manufactures recommend the use of heavy oil in the transaxle; others may recommend the use of automatic transmission fluid in the transaxle.

True

The clutch and the brake system may share the same reservoir.

True

The cone on a synchronizer's blocking ring serves as a cone-clutch assembly while changing gears.

True

The fluid level in the hydraulic clutch reservoir should be approximately one-fourth inch from the top.

True

Until recently, asbestos was the material that was molded or woven into facings of the clutch disk.

True

A whirring, grating, or grinding sound that occurs when the clutch pedal is depressed and stops when the pedal is fully released is most likely caused by ______.

a failed release bearing

A rough, growling noise that is heard from a transaxle while it is in neutral with the engine running, the vehicle stationary, and the clutch engaged is a likely indication that there is a problem in the_____.

a. transaxle input shaft bearings

A technician is replacing a leaking clutch slave cylinder. After removing the cylinder, he takes it apart and finds a swollen cup seal. What should be done?

all answers are correct

What could cause a clutch pedal pulsation?

all these answers are correct

Using a lubricant that is thicker than the specified lubricant can lead to _____.

b. hard shifting

Pilot bearings are being discussed . Technician A says the pilot bearing is located in the flywheel. Technician B says the pilot bearing is located in the crankshaft. Who is correct?

both A and B

Pilot bearings are being discussed. Technician A says the pilot bearing supports one end of the input shaft. Technician B says the pilot bearing keeps the clutch disc centered in the pressure plate. Who is correct?

both A and B

Technician A checks the flywheel for runout [warpage] using a dial indicator. Technician B uses a straightedge to check the pressure plate for warpage. Who is correct?

both A and B

Technician A says clutch linkage may be mechanically or hydraulically operated. Technician B says clutch linkage includes shaft and lever linkage and cable linkage designs. Who is correct?

both A and B

Technician A says the clutch allows the engine to idle while the vehicle is stopped. Technician B says the clutch is needed for gear shifting. Who is correct?

both A and B

Technician A says the clutch assembly is located between the engine and the transmission. Technician B says the clutch provides a mechanical coupling between the engine flywheel and the transmission input shaft. Who is correct?

both A and B

Technician A says the front of the transmission input shaft may be supported by a pilot bearing. Technician B says on some transaxles the input shaft is not supported by a pilot bearing. Who is correct?

both A and B

Technician A says the pressure plate assembly squeezes the clutch disc onto the flywheel. Technician B says the pressure plate moves away from the clutch disc so that the disc can stop rotating. Who is correct?

both A and B

Technician A tests for clutch slippage on a road test. Technician B tests for clutch slippage in the shop by engaging the clutch with the transmission in third gear while the vehicle is stationary. Who is correct?

both A and B

A clicking noise during transmission/transaxle operation may be an indication of _____.

d. worn, broken, or chipped gear teeth

Passenger cars and light trucks are now almost exclusively equipped with _____ spring-type clutches.

diaphram

The clutch release bearing exerts pressure upon the ______.

diaphram spring

A mirror-like shine on the pressure plate or a glazed clutch facing that results in chatter could be caused by ______.

liquid leaking onto the clutch

When making a clutch adjustment, it is necessary to ______.

measure the clutch pedal free travel

Technician A says that a leaking clutch master cylinder primary seal will cause fluid to leak onto the clutch pedal and driver's footwell. Technician B says that a leaking clutch master cylinder secondary seal will not show externally but will cause the pedal to be low and spongy. Who is correct?

neither A nor B

In a self-adjusting-type cable clutch mechanism, the adjusting mechanism is located ______.

on top of the clutch pedal

When the clutch is disengaged, the power flow stops at the ______.

pressure plate and flywheel

The release bearing on a vehicle with a _____ is kept in contact with the release levers of the rotating pressure plate assembly. As a result, the release bearing rotates constantly with the pressure plate.

self-adjusting clutch linkage

The release bearing slides back and forth on the hollow shaft that is part of the ______.

transmission front bearing retainer

The clutch friction disc always rotates with the ______.

transmission input shaft

Which of the following gear ratios provides the highest torque multiplication?

5.23:1

Define the purpose of the final drive gears?

Additional gear reduction and torque increase

What does a shift blocking system do, and how does it basically work?

If you are in 1st gear and going 40mph you will shift to 3rd gear and skip 2nd.

Which type of gear develops gear whine at high rotational speeds?

Spur Gear

What determines whether a conventional transmission or a transaxle is used?

The type of drive system used

After draining gear oil from a transaxle, the technician notices that the oil has shiny, metallic particles in it. What does this indicate?

There is excessive wear within the transaxle.

Explain the role of shift rails and shift forks in the operation of a transmission or transaxle.

They allow the shifting of gears and selection of gears/controls synchronizer.

Some transaxles have a short, self-centering input shaft that does not require a pilot bushing or bearing.

True

Internal slave cylinders are being discussed. Technician A says the slave cylinder and the clutch release bearing are a single unit and cannot be serviced separately. Technician B says to replace the slave cylinder, the transmission must be removed. Who is correct?

both A and B

The surface of the pressure plate contacts the ______.

clutch disc

A poorly adjusted shift linkage can cause which of the following problems?

d. all of the above

Worn teeth on a speed gear can cause _____.

d. the gear to jump out

Technician A says an oil-soaked clutch disc cannot cause clutch chatter. Technician B says clutch chatter cannot be caused by loose bell housing bolts. Who is correct?

neither A nor B

Insufficient clutch pedal clearance results in ______.

premature release bearing failure

The two driving members (inputs) of the clutch assembly are the flywheel and the ______.

pressure plate

The component used to ensure that the main shaft and main gear locked to it are rotating at the same speed is known as a______.

synchronizer

Which of the following gear ratios indicates an overdrive condition?

0.85:1

While inspecting the synchronizers of a transaxle: Tech A says that if the clutch teeth of the synchronizer are rounded, the synchronizer assembly must be replaced. Tech B says that the movement of the synchronizer sleeve on the shaft should be checked. Who is correct?

A only

A noise occurs in forward and reverse gears but not in neutral: Tech A says that the input shaft bearing may be bad. Tech B says that the mainshaft bearing may be bad. Who is correct?

B only

List at least five items that are typically removed when removing a transaxle.

Driveshafts, axles, engine mounts, shift linkage, and the transaxle mounting bolts.

Chatter is a shuddering felt in the vehicle when the pressure plate releases the clutch disc.

False

Coil spring-type pressure plates require less pedal effort than diaphragm-type pressure plates.

False

Dual-mass flywheels do not require special testing tools to determine their condition.

False

In most transmissions and transaxles, there is one synchronizer assembly for each gear. T/F

False

Most hydraulic clutch release systems should be adjusted once a year.

False

Shaft and lever clutch linkage are used on most modern passenger cars.

False

The flywheel should not be resurfaced unless there are hot spots on its surface or the rivets on the clutch disk have made contact with the flywheel surface.

False

There is approximately 10 psi residual pressure in the hydraulic clutch lines when the clutch is in the engaged position.

False

When compared to a diaphragm-type pressure plate, a coil spring pressure plate assembly has fewer moving parts.

False

The number of gear teeth per unit of measure ment of the gear's diameter is known as gear _____.

Gear Pitch

What should you do to properly identify the type of transmission you are working on?

Locate the vehicles manual or ID numbers

Tech A says that most transaxles have a countershaft between the main and output shafts. Tech B says that a countershaft is always in motion when the engine is running. Who is Correct?

Neither A nor B

While diagnosing A noise from a transmission: Tech A says that the noise is caused by something internal if it is most noticeable during a test drive. Tech B says that the noise is caused by the clutch if it disappears when the clutch is disengaged. Who is correct?

Neither A nor B

While discussing shift mechanisms: Tech A says that the interlock notches hold the transmission in the selected gear. Tech B says that the detent notches prevent the selection of more than one gear during operation. Who is correct?

Neither A nor B

Torsional coil springs in the clutch disc ______.

absorb the torque forces

Three non-transmission causes of noise that may seem transmission-related:

1. Engine noise 2. Exhaust system noise 3. Wheel bearing noise

List five checks that should be made during the visual inspection of the parts of a transmission/transaxle.

1. Inspect for cracks or damage on the case. 2. Check for wear or damage on gears and synchronizers. 3. Examine bearings for wear, damage, or play. 4. Inspect seals and gaskets for damage or leaks. 5. Check for any foreign material or debris inside the transmission.

Five common sources of transmission fluid leaks:

1. Transmission case gasket 2. Input shaft seal 3. Output shaft seal 4. Speed sensor seal 5. Shift linkage seals

What tool is often required to remove gears and synchronizer

A gear puller is often required to remove gears and synchronizer assemblies from the mainshaft.

During a test drive, a noise that appears to be transmission related disappears when the driver brings the vehicle to a stop and disengages the clutch with the engine at idle. Tech A says that the noise may be caused by an internal transmission problem. Tech B says that the problem may be something interfering with the flywheel or pressure plate. Who is correct?

A only

Tech A says that double-cone synchronizers have friction material on both sides of the synchronizer rings. Tech B says that multiple-cone synchronizers are used with larger engines and require a larger transmission housing. Who is correct?

A only

Tech A says that in a conventional transmission, the speed gears freewheel around the mainshaft until they are locked to it by the appropriate synchronizer. Tech B says that speed gears are an integral part of the countershaft assembly. Who is correct?

A only

Tech A says that reverse lamp switches are activated at the transmission/transaxle by the gearshift lever. Tech B says that reverse lamp switches are activated by a sensor at the input shaft. Who is correct?

A only

Tech A says that the transmission rear seal at the driveline is particularly prone to leakage. When Tech B pushes up and down on the transmission, he says that the mounts require replacement because the case moves up and down. Who is correct?

A only

Technician A says the engine flywheel is the main driving member of the clutch. Technician B says the transmission input shaft receives driving motion from the pilot bearing. Who is correct?

A only

The owner of a car complains that the gears grind when shifting into reverse. Technician A says the clutch has excessive freeplay. Technician B says there could be oil on the clutch disk facing. Who is correct?

A only

A rough, growling noise occurs when a vehicle with a manual transmission is moving in any gear: Tech A says that the rear input shaft bearing may be at fault. Tech B says that this condition indicates the countergear bearings may be faulty. Who is correct?

B only

Hydraulic clutch systems are being discussed. Technician A says the clutch master cylinder will normally need about 1 oz. of fluid a year. Technician B says if the master cylinder is less than full, there is probably a leak in the system. Who is correct?

B only

Tech A says that if a single idler gear is used to obtain reverse gear, its size and number of teeth must be used to calulate gear ratios. Tech B says that an idler gear is often used for reverse gear because it causes the output shaft to rotate in the reverse direction of the input shaft. Who is correct?

B only

Technician A says the clutch fork moves the pilot bearing. Technician B says the clutch fork movement is controlled by the clutch pedal. Who is correct?

B only

Technician A uses compressed air to clean off asbestos dust from the clutch. Technician B uses an approved liquid cleaning system. Who is correct?

B only

While discussing the various types of transmissions found on today's vehicles: tech A says that one type is the sliding gear transmission. tech B says one type is the sliding collar transmission. Who is correct?

B only

A car jumps out of gear into neutral, particularly when decelerating or going down hills: Tech A checks the shift lever and and external gearshift linkage first. Tech B says that the clutch pilot bearing could be the problem. Who is correct?

Both A and B

Tech A says that broken or worn engine and transaxle mounts can cause a transaxle to have shifting problems. Tech B says that poor shift boot alignment can cause a transaxle to jump out of gear. Who is correct?

Both A and B

Tech A says that shims may be used to adjust shaft end play. Tech B says that snap rings may be used to adjust shaft end play. Who is correct?

Both A and B

Tech A says that some synchronizer assemblies use friction material on the blocking rings to reduce slippage. Tech B says that the inside of some blocking rings is shaped like a cone lined with many sharp grooves. Who is correct?

Both A and B

Tech A says that the countergear or cluster gear is actually several gears machined out of single piece of iron or steel. Tech B says that the countergear is driven by the clutch gear and drives the mainshaft speed gears. Who is correct?

Both A and B

Tech A says that the proper fluid level for a transmission is normally to the bottom of the filler hole. Tech B says that low lubricant levels can cause a transmission to clash during shifting. Who is correct?

Both A and B

While discussing the power flow through a five-speed transmission while it is in first gear: Tech A says that power enters on the input shaft, which rotates the countershaft that is engaged with first gear. Tech B says that the first gear synchronizer engages with the clutching teeth of first gear and locks the gear to the main shaft, allowing power to flow from the input shaft, allowing power to flow from the input gear through the countershaft and to first gear and the main shaft. Who is correct?

Both A and B