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LV12 Revision
Transmissions
| Question | Answer |
|---|---|
| To allow the outer driven wheel to rotate faster than the inner one, the transmissions is fitted with: | a differential |
| To allow for changes in the propshaft length due to suspension movement: | a sliding joint is fitted |
| Which of the following clutch components is connected to the gearbox input shaft? | The centre plate splines |
| A clutch has an excessive amount of 'free play'. This could | make it difficult to disengage the clutch |
| The component which transmits the drive between the input shaft and the main shaft in a RWD three shaft manual gearbox is the: | lay shaft |
| Which of the following is a likely cause of clutch slip? | Not enough clutch free play |
| The overall gear ratio of the transmission is calculated by: | multiplying the gearbox ratio by the final drive ratio |
| A detent ball and spring mechanism is often used to : | lock the selector shafts in position |
| A 'live' rear axle arrangement: | combines the differential and final drive in a rigid casing |
| In a manual gearbox the purpose of the interlock mechanism is to: | prevent two gears being selected at the same time |
| A coil spring clutch is: | heavier and less suitable to high engine speeds than a diaphragm clutch |
| In a four-speed constant mesh gearbox, the gears on the output shaft are always: | free to rotate on the output shaft |
| A damaged gearbox interlock mechanism could allow: | the drive to select reverse when driving |
| A customer complains of a 'crashing sound' when engaging 3rd, the most likely fault is: | worn 3rd gear synchromesh |
| In a hypoid final drive unit the: | pinion centre is offset to the centre line of the crown wheel |
| A vehicle produces a loud knocking sound from the front during very sharp left hand turns. The most likely fault is a: | Badly worn constant velocity joint |
| A constant velocity joint is used: | in a front wheel drive shaft |
| The typical final drive gear ratio for a passenger car is: | between 3:1 and 4:1 |
| Which type of bearing is normally used in a semi-floating hub arrangement: | Taper bearing |
| Difficulty in engaging gears is most commonly cause by: | a worn gear linkage |
| To prevent two gears engaging at the same time the gearbox is fitted with: | an interlock mechanism |
| Multi-plate clutches are often used when the flywheel diameter is limited and: | the engine produces high torque |
| Wheel bearings are usually lubricated with: | grease |
| A clutch emits a bearing whine which disappears when the clutch pedal is depressed, this may be caused by: | a defective clutch release bearing |
| A worn rear wheel bearing is likely to make: | a humming noise |
| Which of the following is likely to produce clutch judder? | Worn centre plate |
| Which RWD rear axle hub arrangement is usually fitted to light vehicles? | Semi-floating type |
| Which of the following faults will affect the way the car drives? | Clutch slipping |
| The force of a diaphragm clutch exerts on a fiction plate: | remains constant with friction plate wear |
| Which of the following components is part of the clutch release mechanism? | The clutch cable |
Created by:
mikewj