Chapter 9 of 9

Repair and maintenance

19 questions from the official bank with the right answer, in the order of the manual.

A test on this chapter Cards of this chapter

No. 1
A low temperature of the engine is noted. What may be the possible cause?
1. AA failure of the thermostat.
2. BA power-cut of the fan.
3. CSmall capacity of the radiator.
Right answer: A. An official question of the Ministry, in its official translation.
No. 2
When the exhaust gases of the diesel engine are very dark, what is the possible cause?
1. ALow temperature of the engine.
2. BLow pressure of the cylinder.
3. CDefective supply of the injection pump.
Right answer: C. An official question of the Ministry, in its official translation.
No. 3
You ascertain that the diesel engine of your car presents interruptions. Which may be the possible cause of this?
1. AHigh temperature of the engine.
2. BLow temperature of the engine.
3. CMalfunction of the fuel injector.
Right answer: C. An official question of the Ministry, in its official translation.
No. 4
Why should you often check the normal pressure of the tyres of a lorry?
1. ASo as to have a comfortable driving.
2. BSo as to prevent a premature wear of the tyres.
3. CSo as to prevent the wear of the car in general.
Right answer: B. An official question of the Ministry, in its official translation.
No. 9
When the starter motor (ignition) does not switch on, which is the possible cause of that?
1. AThe multiplier does not work properly.
2. BThe clearance of the electrical distributor contacts has not been adjusted properly.
3. CThe battery does not have the required voltage.
Right answer: C. An official question of the Ministry, in its official translation.
No. 10
Engine air filter must be cleaned:
1. AFor the reduction of oil consumption.
2. BFor the better cleaning of the air.
3. CFor facilitating the suction of the normal air quantity without any obstacles.
Right answer: C. An official question of the Ministry, in its official translation.
No. 11
When the diesel-engine emits excessive soot (smoke), what should you do?
1. AChange the lubrication oil.
2. BImmediately repair the engine.
3. CCheck and regulate the pump and fuel injectors and clean the air filter.
Right answer: C. An official question of the Ministry, in its official translation.
No. 15
When the disengagement is difficult, what is the possible cause?
1. AThe disc is fixed on the flywheel.
2. BThe friction materials may have been overheated.
3. COil or grease may exist in the friction materials.
Right answer: A. An official question of the Ministry, in its official translation.
No. 18
What causes overheating of the engine?
1. AMalfunction of the thermostat.
2. BIncrease of the external temperature.
3. CExcessive fuel consumption.
Right answer: A. An official question of the Ministry, in its official translation.
No. 19
You notice that the diesel engine of your lorry, while started, stops after a few revolutions. What may be the cause of this?
1. ALow compression of the cylinders.
2. BObstruction of the feeding system.
3. CImproper internal timing of the injection pump.
Right answer: B. An official question of the Ministry, in its official translation.
No. 20
If your tyres of your car have a pressure higher than the normal, where will they present an increased wear?
1. AOn the sides of the tread.
2. BOn the middle (centre) of the tread.
3. COnly on the internal side of the tread.
Right answer: B. An official question of the Ministry, in its official translation.
No. 23
In a lorry that has a braking system with compressed air (air brakes), where should the driver direct his attention mainly?
1. ATo the way the brakes act.
2. BTo the indications of the manometers on the dashboard.
3. CThe way the footbrake pedal goes down, when pressed.
Right answer: B. An official question of the Ministry, in its official translation.
No. 25
You notice that one air container of the braking system with compressed air (air brake) has holed. What should you do:
1. AEnsure its repair through welding.
2. BIsolate it from the rest of the circuit.
3. CEnsure its immediate replacement.
Right answer: C. An official question of the Ministry, in its official translation.
No. 26
You notice that in the exhaust gases of a diesel engine there is a white fume. What is the possible cause of this?
1. AWater has entered the cylinders.
2. BThe diesel engine has been overheated.
3. CGreat oil consumption.
Right answer: A. An official question of the Ministry, in its official translation.
No. 29
What does it mean when the oil warning light on the dashboard is on during the movement of the car?
1. AThat the generator (dynamo) does not charge the battery.
2. BThat lubrication is normal.
3. CThat oil pressure is insufficient.
Right answer: C. An official question of the Ministry, in its official translation.
No. 30
What should you periodically check so as to restrict fuel consumption?
1. AThe level of engine cooling fluid.
2. BTyre tread depth.
3. CTyre pressure.
Right answer: C. An official question of the Ministry, in its official translation.
No. 31
What does the oil manometer on the dash-board of a lorry show?
1. AHydraulic brakes oil pressure.
2. BEngine oil pressure.
3. CSump oil quantity.
Right answer: B. An official question of the Ministry, in its official translation.
No. 32
Which of the following counter-indications may appear due to the excessive wear of the tyre tread depth (“bald tyres”)?
1. AWheel skidding during braking.
2. BExcessive fuel consumption.
3. CNot uniform wear of the differential gears.
Right answer: A. An official question of the Ministry, in its official translation.
No. 39
Lorries heavier than 3.500 kg which are classified as second-hand, should undergo a technical control:
1. AThe first control, two years after their classification and thereafter periodically every two (2) years.
2. BThe first control, before their classification and thereafter periodically every year.
3. CThe first control, before their classification and thereafter periodically every two (2) years.
Right answer: B. An official question of the Ministry, in its official translation.

A low temperature of the engine is noted. What may be the possible cause?

When the exhaust gases of the diesel engine are very dark, what is the possible cause?

You ascertain that the diesel engine of your car presents interruptions. Which may be the possible cause of this?

Why should you often check the normal pressure of the tyres of a lorry?

When the starter motor (ignition) does not switch on, which is the possible cause of that?

Engine air filter must be cleaned:

When the diesel-engine emits excessive soot (smoke), what should you do?

When the disengagement is difficult, what is the possible cause?

What causes overheating of the engine?

You notice that the diesel engine of your lorry, while started, stops after a few revolutions. What may be the cause of this?

If your tyres of your car have a pressure higher than the normal, where will they present an increased wear?

In a lorry that has a braking system with compressed air (air brakes), where should the driver direct his attention mainly?

You notice that one air container of the braking system with compressed air (air brake) has holed. What should you do:

You notice that in the exhaust gases of a diesel engine there is a white fume. What is the possible cause of this?

What does it mean when the oil warning light on the dashboard is on during the movement of the car?

What should you periodically check so as to restrict fuel consumption?

What does the oil manometer on the dash-board of a lorry show?

Which of the following counter-indications may appear due to the excessive wear of the tyre tread depth (“bald tyres”)?

Lorries heavier than 3.500 kg which are classified as second-hand, should undergo a technical control: