LV13 / AE05 Diagnosis and Rectification of Transmission and Driveline Faults 1

Which of the following is the most likely cause of clutch drag?

• Minimal free play at the clutch pedal.
• Excessively worn friction linings.
• Contaminated release bearing.
• Driven plate seized on splines.

How many forward gears are provided by the gearbox shown?

• 6
• 5
• 4
• 3

The picture shows a simple epicyclic gear train. No torque multiplication will occur if:

• Two of the three members are locked together.
• Two members are allowed to rotate freely.
• Annulus gear is held stationary and the sun gear is rotated.
• Planet carrier is held stationary and the sun gear is rotated.

ONE advantage of using a CVT transmission is:

• It uses epicyclic gearing making it very compact.
• To increase the complexity.
• 4, 5, or 6 possible gear ratios.
• Infinite number of possible gear ratios.

ONE advantage of epicyclic gearing is:

• It can achieve torque multiplication by use of a stator member.
• It enables the use of a synchromesh gear mechanism.
• It reduces the force applied to the release bearing.
• It is very compact for a given torque multiplication.

The picture shows a simple epicyclic gear train. Reverse drive will occur when:

• Sun gear is held stationary and the annulus gear is rotated.
• Annulus gear is held stationary and the sun gear is rotated.
• The planet carrier is held stationary and the sun gear is rotated.
• Two of the three members are locked together.

A front-wheel drive manual transmission has a vibration at all vehicle speeds. The most likely fault is:

• A dry constant velocity joint.
• Air in the hydraulic clutch.
• A bent drive shaft.
• A worn layshaft bearing.

What is the purpose of the grooves on the conical surface of a synchromesh baulk ring?

• To allow a smaller contact area and reduce friction between surfaces.
• To allow for better lubrication of the friction face to prevent overheating
• To provide a rapid breakdown of the oil film and allow cone faces to lock.
• To prevent the engagement of more than one gear at a time.

The THREE elements necessary to produce a fire are:

• Oxygen, a fuel source and an ignition source.
• Carbon dioxide, nitrogen and an ignition source.
• Oxygen, hydrogen and nitrogen.
• H2O, CO2 and NOx.

A colleague suffers an electric shock when using an electric drill. Your first action is:

• Pull the drill away from them.
• Inform your supervisor.
• Ring the emergency services.
• Switch off the power supply.