Automotive Transmission Quiz

The diagram below shows a front wheel drive a transmission unit. Which two letters indicate the differential sun gears?

• F & L

• A & G

• M & N

• P & Q

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

• a worn layshaft bearing

• a dry CV joints

• a bent drive shafts

• all the answers shown

When checking the input and output values of a transmission electronic components you would use:

• a hydrometer

• a pressure gauge

• a heavy-duty discharge tester

• a multi meter or oscilloscope

What procedure would you carry out to check for 'clutch slip' on a vehicle fitted with a manual gearbox?

• Apply the parking brake, depress the clutch pedal, engage first gear and raise the engine speed as you release the clutch pedal

• Road test the vehicle moving up and down the gear ratios without engaging or disengaging the clutch

• Depress the clutch pedal, engage the first gear, release the clutch pedal and listen for transmission noise

• Apply the parking brake, depress the clutch pedal, engage top gear, and raise the engine speed as you release the clutch pedal

Automatic transmission fluid is discoloured and has a burnt smell. One possible cause is:

• Incorrect kick down cable adjustment

• Free brake band

• Inoperative transmission oil pump

The picture shows a type of fluid coupling. The one-way clutch fitted to component B is in engaged position. The effect of this on vehicle performance is:

• Poor acceleration moving from rest

• Difficulty in moving away up a steep gradient

• All of the answers shown

• Poor fuel economy and a reduction in top speed

A front wheel drive vehicle fitted with a manual gearbox has difficulty in engaging. Which one of the following is the most likely cause?

• Contaminated clutch linings

• Broken clutch centre plate springs

• Release bearing seized

• Maladjustment of remote selector mechanism

Which one of the following statements is FALSE?

• Incorrect automatic transmission inhibitor switch can prevent a vehicle from starting

• Gear change points are determined in an ECAT system by hydraulic pressure

• Transmission slip will occur in a torque converter without the use of a stator

• Two epicyclic gear sets can produce three forward gears and one reverse

Materials used in a transmission system have to withstand mainly:

• Tensile loads

• Torsional loads

• Low load

• Liner loads

Whilst carrying out a gearbox overhaul you should:

• Replace the gearbox bearings

• Replace all the gearbox gaskets

• All the answers options shown

• Tighten bolts using a torque wrench