LV13 Diagnosis and rectification of transmission and drivelines

What affect will an overdrive gear arrangement have on torque and speed at cruising speeds?

• Torque output is increased, speed output is increased
• Torque output is reduced, speed output is reduced
• Torque output is increased, speed output is reduced
• Torque output is reduced, speed output is increased

What would cause a manual sequential gearbox to jump out of 3^rd gear under acceleration?

• A slipping clutch
• worn detent ball and spring
• Worn selector drum, balls and springs
• Excessive differential free play

What may cause Automatic transmission fluid to be discoloured and have a burnt smell?

• A Slipping Multi plate clutch
• Inoperative transmission oil pump
• Free brake band
• Incorrect kick down cable adjustment

What is used to carry out an oil pressure test on an automatic gearbox?

• An oil pressure test gauge and suitable adapter
• Torque converter pressure gauge
• Pedal pressure test gauge
• A torque inducer test gauge

A oil pressure test on an automatic gearbox may give an indication of what?

• Torque converter pressure
• Pump return pressure
• Pressure applied to each multi clutch pack during selection
• Pedal pressure

What is an automatic transmission stall test used to check?

• Diaphragm spring clutch slip
• Operation of lock up clutch
• Condition of hydraulic fluid
• Torque converter and transmission slip

A good clutch friction plate material should have

• A high blue asbestos content
• high coefficient of friction
• no coefficient of friction
• a low coefficient of friction

A torque converter lock up clutch operates when

• vehicle is on over run
• vehicle is at low speed
• turbine and stator are rotating at different speeds
• turbine and impeller blades are rotating at the same speed

When checking the current consumption of transmission actuator you would use

• an ammeter connected in parallel
• a tachometer
• an ammeter connected in series
• a voltmeter connected in parallel

Oil contamination of a clutch could cause

• slip
• wear
• drag
• chatter