Exam 121: Clutches

Technician A says a fully engaged clutch friction disc must slip slightly to absorb engine vibrations.Technician B says the clutch friction disc is designed to slip slightly during engagement and disengagement to provide smooth operation. Which technician is correct?

When the clutch engages, spring force clamps the friction disc between the flywheel and the ________.

The engine speed increases when the driver depresses the accelerator pedal and releases the clutch pedal, but the vehicle does not move. Technician A says the clutch may be defective. Technician B says the dual-mass flywheel may be defective. Which technician is correct?

The major bearing(s) used with a clutch assembly is (are) the ________.

Technician A says that with self-adjusting clutch systems, the release bearing constantly rotates. Technician B says the ball bearing portion of the release bearing should be lubricated with high temperature grease during routine maintenance. Which technician is correct?

Technician A says the flywheel and pressure plate assembly both rotate at engine crankshaft speed when the engine is running. Technician B says when the engine is running, and the transmission is in neutral, the transmission input shaft may be either rotating or at rest, depending on the clutch pedal position. Which technician is correct?

The clutch pedal freeplay is less than specifications. Technician A says that the clutch may slip during hard acceleration. Technician B says that the clutch will "grab" when the clutch pedal is close to the floor when the clutch is engaged. Which technician is correct?

Before removing the transmission make sure the battery is charged and connected in order to retain any clutch related DTCs.

Technician A says that too much clutch pedal freeplay can cause the clutch to slip during acceleration. Technician B says that too little clutch pedal freeplay can cause the clutch to slip. Which technician is correct?

Most hydraulic clutch systems use what hydraulic fluid?

Technician A says a short input shaft needs a pilot bearing for support. Technician B says pilot bushings are usually pressed into the center of the crankshaft flange. Which technician is correct?

In a hydraulic clutch, the slave cylinder ________.

Two technicians are discussing bleeding a hydraulic clutch. Technician A says to open the bleeder and allow the fluid to gravity bleed. Technician B says to have an assistant slowly depress the clutch pedal as the bleeder valve is opened at the slave cylinder to bleed the air out of the system. Which technician is correct?

A growling noise is heard only when the driver exerts force on the clutch pedal. No noise is heard when the clutch pedal is up. Technician A says the pilot bearing is defective. Technician B says the input shaft bearing is defective. Which technician is correct?

A manual transmission is difficult to shift or get into gear, especially reverse. Technician A says that the clutch may not be fully releasing. Technician B says that too much clutch pedal freeplay could be the cause. Which technician is correct?

A clutch is chattering when engaged. Technician A says that too much clutch freeplay is the cause.Technician B says that oil or grease may be on the friction disc. Which technician is correct?

Most modern friction discs have cushion springs to ________.

Which type of fluid is typically used in a hydraulic clutch system?

Technician A says the flywheel is attached to the engine crankshaft and rotates at engine speed. Technician B says the pressure plate also rotates at engine speed. Which technician is correct?

Pressure plate assemblies may include all of the following EXCEPT ________.