4290-151 Service Inspection

4290-151 Service Inspection

By Teach Teach

Multiple Choice

A vehicle undergoing a service inspection should conform to what legislation?

• Manufacturer’s schedule

• Ministry of Transport test

• Service book requirements

• Environmental Protection Act

​Vehicles undergoing a manufacturer’s inspection should not only conform to the manufacturer’s recommendation, but also the Ministry of Transport’s test – commonly known as an MOT. If a vehicle’s tyre is found to be below the legal limit, the vehicle should not be driven on the public highway. The Environmental Protection Act would determine the appropriate disposal of the waste products, ie engine’s oil and filters.

Multiple Choice

What equipment should be used to test the content of gases

from an exhaust?

• Engine diagnostic machine

• Emissions tester

• Continuity tester

• Engine rev counter

​The emissions tester will check the gas content coming from the exhaust. The readings from it give the technician information on how efficiently the vehicle is running.

​Option a is incorrect as engine diagnostic machines incorporate a number of tests, but not one to test the content of gases from an exhaust. Option c is incorrect as continuity testers should also not be used for this type of test. Option d is incorrect as the engine rev counter may be used along with the tester, but would not give any results on emissions.

Multiple Choice

What is the tool in the image known as?

• Engineer’s rule

• Micrometer

• Vernier caliper

• Depth gauge

​A vernier caliper is the measuring tool shown in the picture above.

It is able to precisely measure both internal and external measurements. All other options are incorrect as they are measuring tools, but not the one shown in the image.

Multiple Choice

The setting of valve clearance is carried out using which of

the following measuring tools?

• Engineer’s rule

• Dial test indicator

• Feeler gauge

• Spring balance

​The feeler gauge is used to check and set clearance between the valve stem top and the camshaft lobe or rockers.

All other options are incorrect as these are measuring tools, but would not be used for this task.

Multiple Choice

A diesel fuel injection pump calibration is necessary to

ensure that

• each engine cylinder has the correct compression ratio

• all engine cylinders receive equal amounts of metered fuel

• the fuel is injected at precisely the correct time

• injection pressures are not exceeded.

​The injector pump is calibrated to ensure that all engine cylinders receive equal amounts of metered fuel. This ensures correct engine running.

Option a is incorrect as each engine cylinder having the correct compression ratio is not affected by the fuel injection pump.

Option c is incorrect as the fuel being injected at precisely the correct time is not as important as metering the fuel. Option d is incorrect as injection pressures not being exceeded would not change due to calibration.

Multiple Choice

The image shows a layout of which of the following?

• Final drive

• Clutch

• Gearbox

• Front brake

​A clutch layout is shown in the image above. The components are the operating fork, release bearing, diaphragm spring cover, friction plate and flywheel.

Option a is incorrect as this does not show a final drive layout. A final drive can be found as part of transmission systems. Option c is incorrect as this does not show a gearbox layout. A gearbox can also be found as part of transmission systems. Option d is incorrect as this does not show a front brake layout. A front

brake is found as part of braking systems.

Multiple Choice

Fuel filters are normally fitted between which of the following

two components?

• Inlet manifold and cylinder

• Inlet manifold and fuel rail

• Fuel tank and fuel rail

• Fuel rail and injector

​The inline fuel filter is used to filter the fuel before it reaches the main components of the system. If the injectors become contaminated with dirty fuel they may operate incorrectly or could even fail. The inline fuel filter is a service replacement item. All other options are incorrect as these components would not be the normal position for the filter.

Multiple Choice

Vehicle wiper blades should be inspected for

• correct number of wipes per second

• correct number of wipes per minute

• splits in the rubber and operation across windscreen

• correct alignment against the scuttle panel.

​Wiper blades should be inspected for damage such as splits and deterioration on the rubber wipe surface. A vehicle’s wiper system makes up part of the Ministry of Transport test (MOT), which inspects the operation of the wipers and washers. An inspection of the wiper blades does not involve the correct

number of wipes or alignment against the scuttle panel.

Multiple Choice

What is a requirement of an air filter assembly?

• Increase air intake noise

• Increase exhaust noise

• Decrease air intake noise

• Decrease exhaust noise

​Decreasing air intake noise is one purpose of the air filter assembly. The amount of air required to enter the intake creates a loud noise, and by passing the air through the air intake system, the noise level is reduced.

Option a is incorrect as increasing air intake noise is not desirable, and the air filter assembly actually decreases the air intake noise. Options b and d are incorrect as the air filter assembly does not affect the exhaust system.

Multiple Choice

What does the image show?

• Wishbone rubber mounting

• Damper upper mounting assembly

• A wishbone arm rubber bush

• A damper lower bush

​The mounting allows the damper to be mounted to the body.

All other options are incorrect as these components are parts of

the suspension system but are not the one shown in the image above.

​

Multiple Choice

Which one of the following lights may require adjustment as

part of inspection?

• Brake

• Reverse

• Side

• Head

​Headlights may require adjustment as part of an inspection service. Options a, b, and c are fixed lights and would not require adjustment.

Multiple Choice

The image is an exploded view of which of the

following?

• Brake master cylinder

• Brake slave cylinder

• Front brake

• Front brake disc

​The brake slave cylinder works as a result of the action of the brake master cylinder. It is commonly known as a wheel cylinder.

All the other options are incorrect, although they are all parts of the braking system.

Multiple Choice

What is the component indicated by the arrow in the image known as?

• Track rod end

• Bottom ball joint

• Drop link

• Track rod

​The track rod end is connected to the end of the track rod and is adjustable.

The other options are all incorrect as bottom ball joints, drop links and track rods are part of the steering system but are not the component shown in the image.

Multiple Choice

The front wheel alignment of a vehicle is found to require

adjustment. How is this adjustment undertaken on a rack

and pinion steering system?

• By adjusting the track rod length

• By increasing the drop arm length

• By adding additional shims to the ball joints

• By moving the torsion bar to the nearside or offside of the

  vehicle

​The wheel alignment is adjusted by changing the track rod length, making it longer or shorter until it is correct. Option b is incorrect as increasing the drop arm length is an adjustment of steering but would not affect the wheel alignment.

Options c and d are incorrect as adding additional shims to the ball or moving the torsion bar to the nearside or offside of the vehicle are adjustments of suspension, and would not adjust the wheel alignment.

Multiple Choice

Brake linings are inspected

• functionally

• aurally

• visually

• aurally and visually

​Brake linings would be visually inspected for serviceability. After this had been carried out, they would then be adjusted and checked for functional operation, and tested for any audible noises.

Multiple Choice

What will have caused the wear on the tyre tread shown in

the image?

• Over inflation

• Under inflation

• Incorrect wheel alignment

• Incorrect wheel balance

​Incorrect wheel alignment will cause damage to the tyre as shown, as the full tread would not be in contact with the road at all times.

The other options are incorrect as, while over inflation, under inflation and incorrect wheel balance may cause damage to tyres, they will not result in the wear on the tyre tread as shown in the image.

Multiple Choice

The image below shows which of the following?

• A serviceable drive belt

• A new drive belt

• An unserviceable drive belt

• An unserviceable V belt

​The belt is cracked, which may result in failure during operation. Therefore this is an unserviceable drive belt.

Options a and b are incorrect as the drive belt shown is neither serviceable nor new. Option d is incorrect as the belt shown is not a V belt. However, this type of belt may be fitted to a motor vehicle, depending on the pulley type.

Multiple Choice

The equipment shown in the image should be used to set and adjust

• wheel alignment

• wheel balance

• head light alignment

• wash jet pattern.

The equipment shown in the image is a head light alignment tool, which is used to set and adjust the head light alignment. Head light alignment makes up part of the Ministry of Transport test (MOT).

Option a is incorrect as tracking equipment should be used. Option b is incorrect as a wheel balancer should be used. Option d is incorrect as the washer jet wash is lined up using a fine pin/needle to adjust the jet.

Multiple Choice

When checking the automatic gearbox fluid levels in modern day vehicles, manufacturers require the

• oil to be at a specific temperature

• gearbox to be in neutral when checked

• gearbox to be in drive when checked

• engine to be ran at 3000 rpm.

​Modern day vehicles require the automatic gearbox fluid to be checked at a specific temperature using a diagnostic machine. Option b is incorrect as a vehicle with neutral selected would not be in the right state to check the gearbox level. Option c is incorrect as a vehicle with drive selected and the engine running would be dangerous. Option d is incorrect as an engine running

at 3000 rpm would also not be the right circumstances to check the gearbox level.

Multiple Choice

On checking the oil level, the dipstick shows the oil to be at

the ‘min’ position. What does this mean?

• The level is correct

• The level is too high

• The level is too low

• The oil requires changing

​The term ‘min’ means minimum, ie the lowest amount that gives some kind of lubrication to the engine. All other options are incorrect.

Multiple Choice

What is the name for the type of oil normally used in vehicle

engines?

• Multi-type

• Multi-grade

• Multi-size

• Multi-temp

​Multi-grade oil is normally used in today’s motor vehicles. This type of oil offers good lubricating protection over a wide range of conditions and temperatures.

All other options are incorrect as they are not the correct terminology for the type of oil normally used in vehicle engines.

Multiple Choice

A vehicle in for an inspection should be inspected for

cosmetic damage

• pre-service

• post-service

• during service

• pre- and post-service.

​A cosmetic inspection should be carried out prior to the vehicle being worked on. It is often a good idea to walk around the vehicle with the customer, noting any damage at time of vehicle drop-off.

Carrying out an inspection after or during the vehicle’s repair is not suitable as damage may occur during inspection.

Multiple Choice

A vehicle’s service indication is determined by

• age and date

• speed and age

• time and mileage

• mileage and speed.

​A vehicle’s service indicator is determined by the vehicle’s time and mileage. For example, a vehicle has a service requirement every 12 months or 12000 miles, whichever comes first. Vehicles have service lights that are dependent on time/mileage.

Multiple Choice

Which of the following should not be inspected on a tyre?

• Tread depth

• Cuts

• Pressures

• Alignment

​Options a, b, and c are all checks that would be carried out on a tyre. Incorrect alignment would be shown on the wear patterns on the tyres.

To identify incorrect alignment, a wheel alignment gauge should be used.

Multiple Choice

The image below shows the correct?

• emissions smoke pattern

• head light alignment

• wheel alignment

• wheel balance results.

​The image shows a headlight alignment pattern. A headlamp alignment procedure is necessary after fitting a headlight assembly and is part of the Ministry of Transport test (MOT).

All other options are incorrect as the emissions, wheel alignment and wheel balance procedures would produce digital read outs and not visual patterns

​End of Test.

to get your score divide your total by 25, then multiply by 100.​