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imi level 3 light vehicle maintenance and repair, Papers of Mechanics

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UNIT REF:
LV0506K
WRITTEN ASSESSMENTS
KNOWLEDGE OF INSPECTING LIGHT VEHICLES USING
PRESCRIBED METHODS
Pass Mark 60%
1. This question is concerned with light vehicle maintenance
inspections. (20 marks)
a. State two inspections that could be carried out seasonally, explaining
what would be checked and why? AC (1.1) (4 marks)
(a) 1, ENGINE OIL - Engine Oil can perform differently depending on the Temperature, we can check its
Viscosity and/or Level. D.C. Engine Oil Performance varies with Internal and External Temperatures, the
Viscosity of the Oil must be suitable to what Season it is (Winter etc.).
HOW - We can test the Engine Oil's Viscosity by using a measuring device (Viscometer?) and/or by
looking at its properties seeing what Season it's best suited in.
Exhaust Gasses - Vehicle exhaust fumes can irritate the eyes and respiratory tract, and are a risk to health
by breathing in. Carbon-fueled engine fumes contain carbon monoxide, a poisonous gas. Prolonged exposure
to diesel fumes, especially blue or black smoke, may lead to coughing and breathlessness.
HOW - A probe is placed in the tailpipe of the car and the exhaust gasses are measured following a
strict procedure. The exhaust gas analyzer is used for measuring 4 gasses, oxygen (O2), carbon monoxide
(CO), carbon dioxide (CO2) and hydrocarbons (HC) as well as calculating lambda.
b. State two tools that would assist with an inspection of suspension and
steering systems. Explaining how to use the tools.
AC (1.3) (4 marks)
b. Two tools are
1 , Car jack– Can be used to jack the vehicle up and then putting your hands at 3 o'clock and 9 o'clock
position on and tire and wiggling it to check the play.
2, Pry bar– Once the vehicle is jacked up, Pry bar can be sticked under the tire and wiggled up and down
to check the play in ball joint.
c. Explain how you would check for excessive play and state the signs, for
example ‘wheel bearing would be grinding’
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UNIT REF:

LV0506K

WRITTEN ASSESSMENTS

KNOWLEDGE OF INSPECTING LIGHT VEHICLES USING

PRESCRIBED METHODS

Pass Mark 60%

1. This question is concerned with light vehicle maintenance inspections. (20 marks) a. State two inspections that could be carried out seasonally, explaining what would be checked and why? AC (1.1) (4 marks)

(a) 1, ENGINE OIL - Engine Oil can perform differently depending on the Temperature, we can check its

Viscosity and/or Level. D.C. Engine Oil Performance varies with Internal and External Temperatures, the

Viscosity of the Oil must be suitable to what Season it is (Winter etc.).

HOW - We can test the Engine Oil's Viscosity by using a measuring device (Viscometer?) and/or by

looking at its properties seeing what Season it's best suited in.

Exhaust Gasses - Vehicle exhaust fumes can irritate the eyes and respiratory tract, and are a risk to health

by breathing in. Carbon-fueled engine fumes contain carbon monoxide, a poisonous gas. Prolonged exposure

to diesel fumes, especially blue or black smoke, may lead to coughing and breathlessness.

HOW - A probe is placed in the tailpipe of the car and the exhaust gasses are measured following a

strict procedure. The exhaust gas analyzer is used for measuring 4 gasses, oxygen (O2), carbon monoxide

(CO), carbon dioxide (CO2) and hydrocarbons (HC) as well as calculating lambda.

b. State two tools that would assist with an inspection of suspension and steering systems. Explaining how to use the tools. AC (1.3) (4 marks)

b. Two tools are

1 , Car jack– Can be used to jack the vehicle up and then putting your hands at 3 o'clock and 9 o'clock

position on and tire and wiggling it to check the play.

2, Pry bar– Once the vehicle is jacked up, Pry bar can be sticked under the tire and wiggled up and down

to check the play in ball joint.

c. Explain how you would check for excessive play and state the signs, for example ‘wheel bearing would be grinding’

i. wheel bearings ii. suspension bushes iii. steering ball joints iv. constant velocity joint v. the steering column top bush AC(1.3) (10 marks)

(i) , Excessive play in wheel bearing can be checked by jacking the car up and wiggling the tire. Wheel

bearing would make grinding noise when turning the wheel.

d. During an inspection, you find that the right hand rear suspension damper is leaking. What action would you recommend on your report? AC(1.7) (2 marks)

2. This question is concerned with the technical aspects of light vehicle braking systems and the Inspection of system components. (20 marks) a. You are inspecting the brake system of a vehicle. Describe the checks you would carryout to determine the safety and condition of the, to include method. i. brake discs ii. disc pads iii. hydraulic system AC (1.3) (6 marks)

2. Parking brakes can seize up when driving vehicle with parking brake engaged. This will overheat the

parking brake and resulting in prematurely wearing the brake pads or shoes, and possibly locking up the

wheel.

1. Self adjuster failure is the most common reason drum brakes fail. The drum brake self-adjuster is a small

mechanism that’s responsible for adjusting the position of the shoes in the drum as the lining wears out. It

can fail due to corrosion

2. Broken seals on drum brake piston or cracks on cylinder will cause leakage and resulting in failure of

drum brake operation.

3. This question is concerned with the pre-delivery inspection of a new light vehicle. (20 marks) a. Explain and state why these checks would be carried out on the following systems: AC (1.2) (12 marks) i. fluids and lubricants ii. washers and wipers iii. body and interior b. Apart from stop and tail lamps, which other rear lights should be checked prior to delivery? AC (1.2) (4 marks)

b. Apart from stop and tail lamps, Direction indicators and hazard warning lights, fog lamps, reversing

lamps, rear reflectors and rear registration plate lamps should be checked.

c. What action should you take if you find a fault with the paint work on inspection and why? AC (1.7) (4 marks)

c. I would note it on my PDI checklist and click picture of the faulted paintwork if possible and inform

the supervisor or workshop management. I would do so because fault in paint work can build bad

reputation for the business and the customer can distrust the business.

4. This question is concerned with the inspection paperwork requirements for light vehicles. (20 marks)

a. List five pieces of information and there location on the vehicle which could be recorded on the inspection report. As well at the need for it. AC(1.6) (13 marks) b. Explain why it is advisable to accurately record the results of a pre-work inspection before starting any repairs on a customer’s vehicle. AC (1.6) ( marks)

b. doing pre-work inspection would help you against any false accusations from customer as it acts as a

proof to protect you against any legal charges.

c. Why is it important that the technician who inspects the vehicle signs the inspection report? AC (1.9) (3 marks)

c. It is important for technicians to sign the inspection report to ensure that the checks have been done

according to the standards and technician is held accountable for the checks done on the vehicle

5. This question is concerned with general requirements of light vehicle inspections. (20 marks) a. Explain the sources of information you would use in respect of each of the following: i. MOT requirements ii. vehicle specifications iii. service schedules AC (1.5) (6 marks)

i. MOT requirement – DVLA website , manufacturers book

ii. Vehicle specification – Vehicle manual book, auto data can be used as a source of information

iii. Service schedule – Vehicle service book can be used as a source of information.

b. Explain why it is important to establish a logical, systematic route when inspecting light vehicles. AC (1.3) (4 marks)

b. A logical approach to fault finding is essential in order to avoid wasting time and money. If a fault

occurs on a vehicle and it is a known problem or you have come across it before, then by using your

experience you can optimize the time spent rectifying the fault as you have some direction.