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AURTTF102 INSPECT AND SERVICE DIESEL FUEL INJECTION
SYSTEMS ASSESSMENT TASK 1
FEEDBACK COVER SHEET
STUDENT NAME SAROJ BASNET
STUDENT ID s9993147
ASSESSOR NAME
Gurpreet Saggu
EVIDENCE COLLECTED
BENCHMARK REQUIREMENTS MET
1
st
Attempt
2
nd
Attempt
3
rd
Attempt
●
Answers to Knowledge Questions
☐
☐
☐
OUTCOME
☐
Satisfactor
y
☐
Not Satisfactory
☐
Satisfactor
y
☐
Not Satisfactory
☐
Satisfactor
y
☐
Not Satisfactory
DATE
/ / 20
/ / 20
/ / 20
ASSESSOR INITIAL
FEEDBACK TO STUDENT Dear Saroj,
Please, explain how are your all answers are word to word matching with another student.
ASSESSOR SIGNATURE
DATE of FINAL OUTCOME
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
52010
CRICOS Code:
03548F Version:
1.0 Approved on:
11 Mar 2021
Review Date:
11 Mar 2023
Page 1
of 21
Student Guide for Written Knowledge Assessment
Overview of Assessment This is a written assessment task you will be assess on your knowledge of inspect and service diesel fuel injection system.
The topics that will be covered in the assessment are:
1. Prepare to inspect and service diesel fuel injection system
2. Inspect diesel fuel injection system
3. Service diesel fuel injection system
4. Complete work processes
This assessment will ensure that the elements, performance criteria, performance evidence and knowledge evidence required, and conditions are adhered to demonstrate competency in this unit assessment task. ●
Read the assessment carefully before commencing.
●
Your Assessor will use the assessment criteria in this document and will provide feedback / comment. ●
You MUST
answer all the questions in the assessment tasks in your own words and
own handwriting. ●
This is an “Open Book” assessment, and students can use the resources listed in the “Resources Required” section below.
Task/s to be assessed
To complete this written assessment, you will need to answer the 66
questions comprising of Multiple Choice, True and False, Fill-in the Gap and Short Answer questions.
Time allowed
On average, the Assessment should take 2 – 4 hours to complete.
Location
This theory assessment will be completed in a classroom under the supervision of a trainer/assessor.
Decision making rules
The candidate MUST
be able to demonstrate knowledge to complete the tasks outlined in the elements, performance criteria and foundation skills of this unit, including knowledge of:
●
Methods to locate and interpret information required to inspect and service diesel fuel injection systems, including:
o
Information provided by customer and supervisors
o
Manufacturer specifications and procedures or equivalent documentation
●
Workplace procedures required to inspect and service diesel fuel injection systems, including: o
Establishing serviceability of tools and equipment
o
Documentation procedures, including:
−
Inspection findings such as recommendations for required repairs or adjustments
o
Housekeeping procedures, including:
−
Examination of tools and equipment
−
Storage of equipment
−
Identification, tagging and isolation of faulty equipment
−
Disposal of excess materials
−
Recycling procedures
●
Work health and safety (WHS) requirements relating to inspecting and servicing diesel fuel injection systems, including procedures for:
o
Working with high pressure diesel fuel systems
o
Working with high voltage diesel fuel injectors
o
Working with stored fuel pressures
o
Engine start-up and shut-down
●
Environmental requirements, including procedures for trapping, storing and disposing of fluids released from fuel systems
●
Application, purpose and operation of air filter and air intake housing and ducting
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
52010
CRICOS Code:
03548F Version:
1.0 Approved on:
11 Mar 2021
Review Date:
11 Mar 2023
Page 2
of 21
●
Identification and function of mechanically controlled diesel fuel injection system and components, including:
o
Types and applications of fuels, including diesel and biofuels
o
Fuel tank and lines
o
Fuel filters and sedimenter filters
o
Fuel supply pumps
o
Injection pumps, including:
−
In-line
−
Rotary
o
Injector pipes
o
Injectors
o
Overflow or leak-off pipes
●
Identification and function of electronic diesel fuel injection systems and common rail fuel systems and components, including:
o
Fuel tank and lines
o
Fuel filters and sedimenter filter
o
Fuel supply pumps
o
Injection pumps
o
Pressure and injector pipes
o
Fuel rail
o
Injectors
o
Overflow or leak-off pipes
o
Electronic control unit and sensors
●
Inspection procedures for diesel fuel injection systems, including procedures relating to leaks, damaged piping and sedimentary sight glasses
●
Service and adjustment procedures for diesel fuel injection systems, including:
o
Servicing sediment filters
o
Replacing fuel filters
o
Bleeding fuel system as required
o
Servicing air filter and air intake housing and ducting
o
Engine speed adjustments as required and operational testing
●
Post-service testing procedures for diesel fuel injection system
Resources required
Learning Resources available to students include:
●
Automotive Technology (A System Approach) 7
th
Edition – Chapters 2, 5, 6, 7, 28
●
Modern Diesel Technology: Light Duty Diesels 1
st
Edition – Chapters 1, 5, 7, 8, 9 & 10
●
Websites –
●
Trainer Handouts
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
52010
CRICOS Code:
03548F Version:
1.0 Approved on:
11 Mar 2021
Review Date:
11 Mar 2023
Page 3
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Assessment 1 – Questioning
Written Assessment
Multiple Choice question. Select the correct answer.
1.
What items of personal safety are needed when carrying out inspecting and servicing on vehicles or machinery diesel fuel systems?
A.
Safety glasses and shields.
B.
Footwear.
C.
Clothing.
D.
Skin protection.
E.
All these answers are correct.
True or False question
2.
Diesel fuel fumes are explosive! When refuelling, many people overlook the fact that diesel fuel vaporizes and combines with air to form combustible mixtures that only require an ignition source to cause an explosion. Diesel fuel is less volatile than gasoline, but it should always be handled with care, especially in the heat of summer.
☐
True
or
☐
False
Multiple Choice question. Select the correct answer.
3.
When working with high pressure diesel fuel systems, caution MUST be taken.
A.
Eye protection should be worn when working with high-pressure fluids.
B.
High-pressure atomized fuel is extremely dangerous, and no part of the body should be in danger of contacting it.
C.
Never touch an injector on the pop tester when it is at any pressure above atmospheric. Remember also that the entire injector assembly is under pressure.
D.
Diesel fuel oil is a known cancer-causing agent. Hands should always be washed after contact with it.
E.
All these answers are correct.
Multiple Choice question. Select the correct answer.
4.
Safety must be considered a high priority when working with a Common-Rail Diesel (CRD) engine. The Common-Rail Diesel (CRD) high-pressure system can produce fuel pressures up to and sometimes in excess of.
A.
1800 bar.
B.
26 000 psi.
C.
180 000 kPa.
D.
All these answers are correct.
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
52010
CRICOS Code:
03548F Version:
1.0 Approved on:
11 Mar 2021
Review Date:
11 Mar 2023
Page 4
of 21
True or False question
5.
Allow some time for pressure to dissipate after turning the engine off before disconnecting Common-
Rail Diesel (CRD) engine fuel system components, otherwise stored fuel pressures can spray all over you, other work colleague and the vehicle.
☐
True
or
☐
False
Multiple Choice question. Select the correct answer.
6.
The injector system for a Common-Rail Diesel (CRD) operates with high voltages. They can be up to
120 volts or more, with up to a ________ current draw, so you must be very careful working with high voltage diesel fuel injectors. Always check with the manufacturer for specific details on safety.
A.
0-amp.
B.
2-amps.
C.
20-amps.
D.
All these answers are correct.
Multiple Choice question. Select the correct answer.
7.
Using the correct procedure to start a diesel engine is important, especially when temperatures drop below 32
O
F (0
O
C).
A.
Limit smoke emission cold.
B.
Engine loading when cold.
C.
Both “Limit smoke emission cold” and “Engine loading when cold”.
D.
Neither “Limit smoke emission cold” and “Engine loading when cold”.
Multiple Choice question. Select the correct answer.
8.
Never use start spray or similar agents to start an engine. This may cause an ________ in the inlet manifold. Danger of personal injury.
A.
Explosion.
B.
No start situation.
C.
Cold start.
D.
All these answers are correct.
True or False question
9.
Let the engine run for a few minutes without any load before stopping it. This allows engine temperature equalization and prevents boiling once stopped and also allows the turbochargers to cool down.
☐
True
or
☐
False
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
52010
CRICOS Code:
03548F Version:
1.0 Approved on:
11 Mar 2021
Review Date:
11 Mar 2023
Page 5
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Multiple Choice question. Select the correct answer.
10.
Diesel and other combustible materials must be stored in?
A.
Cupboard.
B.
Office cabinet.
C.
Approved and designated storage cabinet.
D.
All the answers are correct.
True or False question
11.
Diesel must be stored in a well-ventilated area and in stored in approved and designated storage area.
☐
True
or
☐
False
Multiple Choice question. Select the correct answer.
12.
Diesel should be disposed.
A.
Into storm water drain.
B.
Stored in approved storage tank and disposed by license contractor.
C.
Leave outside to evaporate.
D.
All the answers are correct.
13.
When handling, trapping, storing and disposing of flammable liquids released from the diesel fuel system, which document should you use to find this information?
Safety Data Sheet (SDS)
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
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Fill in the Missing Words
14.
Place the missing word to complete the following statement about purpose and operation of air intake using the following words
Missing Words: engine, operation, phases, scavenging
The role of the intake system in a diesel __engine____ is to supply a charge of air or air/dead gas mixture to the engine cylinders. This gas mixture is used for combustion, cooling, and cylinder ____operation_____. Even when naturally aspirated and especially when turbocharged, diesel engines are designed for lean-burn ___scavenging__. This means that under most operating _____phases____, there is significantly more air present in the engine cylinder than that required to burn the fuel.
15.
Explain the function of the diesel engine air filter?
The Air Filter is the barrier against engine contamination. Protection against contaminants is no doubt the most important air filter function. It serves as a barrier against debris that may contaminate the engine.
16.
Locate the following seven [7] air intake and turbocharger components on the image below. The seven [7] air intake components are, engine intake manifold, turbocharger, wastegate, compressor wheel, crossover pipe, air cleaner, and restriction gauge indicator port.
1
Air cleaner
2
Restriction gauge indicator port
3
Compressor wheel
4
Wastegate
5
turbocharger
6
crossover pipe
7
engine intake manifold
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
52010
CRICOS Code:
03548F Version:
1.0 Approved on:
11 Mar 2021
Review Date:
11 Mar 2023
Page 7
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Multiple Choice question. Select the correct answer.
17.
Animal fats, recycled restaurant grease, and vegetable oils derived from crops such as soybeans, canola, corn, and sunflowers are used in the production of ___________________fuel
.
A.
Biodiesel.
B.
Petrol.
C.
Fossil.
D.
All the answers are correct.
18.
List the five [5] commonly available diesel fuels. 1
petroleum diesel
2
synthetic diesel
3
Biodiesel
4
hydrogenated oils and fat
5
dimethyl ether
True or False question
19.
Diesel fuel is designed to be used by diesel engines and is therefore not an alternative fuel for petrol engines.
☐
True
or
☐
False
20.
Explain the difference between Winter Diesel blends and regular diesel fuels.
Winter diesel blends are designed for extremely cold temperatures. It is less dense than regular diesel and has different boiling points and less paraffin wax.
Regular diesel is the most popular, however contains a significant amount of paraffin wax which has a great amount of energy and adds to the fuel’s viscosity and ability to lubricate but may cause cold weather problems as it is made for normal climate. Multiple Choice question. Select the correct answer.
21.
Besides fuel storage, the fuel tank may play an important role in a high-flow fuel system as a(n):
A.
Heat exchanger.
B.
Fuel-heating device.
C.
Ballast equaliser.
D.
Aerodynamic aid.
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
52010
CRICOS Code:
03548F Version:
1.0 Approved on:
11 Mar 2021
Review Date:
11 Mar 2023
Page 8
of 21
True or False question
22.
The fuel subsystem is the group of components responsible for fuel storage and its transfer to the high-pressure injection circuit.
☐
True
or
☐
False
Multiple Choice question. Select the correct answer.
23.
All diesel fuel systems use a ________ pump that takes fuel from the tank and delivers it to the injection pump, unit injectors or high-pressure pump.
A.
Lift.
B.
Line.
C.
Pressure.
D.
All the answers are correct.
24.
Hoses and pipes for the diesel fuel system on vehicles may be? Hoses and pipes for the diesel fuel system may be seamless, rigid, yet flexible steel tubing or fuel resistant, rubber compound hoses.
Multiple Choice question. Select the correct answer.
25.
Where is a secondary filter usually located?
A.
Upstream from the transfer pump.
B.
On the charge side of the transfer pump.
C.
In the fuel rail.
D.
In the return gallery.
26.
What are the two [2] types of filters used in a diesel fuel system?
1
Primary filter 2
Secondary filter (sedimenter filter)
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
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CRICOS Code:
03548F Version:
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Review Date:
11 Mar 2023
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27.
Many fuel subsystems are equipped with a water separator or sedimenter filters and Water in Fuel (WIF) sensors. Explain what the water separator or sedimenter filters and Water in Fuel (WIF) sensors do?
The sedimenter is made to allow heavy contamination and water to style at the bottom of the unit to prevent blockage of the finer filtering fuel filter and some diesel fuel sediments are fitted with water level warning devices to warn the diver when the sedimenter requires cleaning or draining or water.
28.
Some fuel subsystems are equipped with a hand primer pump; explain the function of a hand primer pump? The
function of a hand primer pump is to pump fuel from the supply tank to the engine and mainly to the injectors of a diesel engine to enable the engine to be cold started without excessive use of the electrical system.
29.
Identify the two [2] injection pumps types below. Which is the inline pump and which the rotary pump.
Inline pump
Rotary pump
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
52010
CRICOS Code:
03548F Version:
1.0 Approved on:
11 Mar 2021
Review Date:
11 Mar 2023
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True or False question
30.
A basic in-line injection pump has separate pumping elements, one for each cylinder of the engine. Each pumping element is operated by a cam on the pump camshaft. The pump’s camshaft is connected to an auxiliary shaft on the engine, which is driven by the timing gears. The coupling connects the auxiliary shaft to the pump’s camshaft and also allows the pump to be timed to the engine
☐
True
or
☐
False
Multiple Choice question. Select the correct answer.
31.
There are two [2] designs of distributor-type diesel injection pumps: axial and radial pumps. These are the types that are used in most light diesel engines. Distributor pumps are designed for engines that operate at relatively high speeds. They have a ________ pumping element, regardless of the number of cylinders in the engine.
A.
Single.
B.
Double.
C.
Multiple.
D.
Ten [10].
Multiple Choice question. Select the correct answer.
32.
Which type of fuel transfer pump is more commonly used by electronically managed diesel engine/fuel systems?
A.
Plunger pumps.
B.
Centrifugal pump.
C.
Diaphragm pumps.
D.
Gear pumps.
Multiple Choice question. Select the correct answer.
33.
Charging pressure rise is usually directly related to which of the following?
A.
Throttle position.
B.
Engine load.
C.
Peak power.
D.
Increased RPM.
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
52010
CRICOS Code:
03548F Version:
1.0 Approved on:
11 Mar 2021
Review Date:
11 Mar 2023
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Multiple Choice question. Select the correct answer.
34.
The fuel injection pump contributes to fuel delivery within the high-pressure circuit of the fuel system.
A.
Pressurises the fuel to the required force to be able to operate the spring-loaded mechanical fuel
injector.
B.
Delivers the pressurised fuel to the injector at the correct timing according to engine speed, and the firing order of the cylinders.
C.
Meters the quantity fuel delivered to the injectors to control engine speed according to driver throttle position and engine load.
D.
All the answers are correct.
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
52010
CRICOS Code:
03548F Version:
1.0 Approved on:
11 Mar 2021
Review Date:
11 Mar 2023
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35.
Match the following diesel fuel system functions with the appropriate components using connecting lines.
Diesel Components:
Injectors, Control Lever, Fuel Filter, Governor, Supply Feed Pump, Injection Fuel Pump, Sedimenter, Cut off Solenoid.
Filters the Distillate of Fine Particles
fuel filter
Circulates Fuel Within the Low-Pressure Side of the Injection System
Supply feed pump
Delivers Atomised Fuel into the Combustion Chambers
injectors
Allows the Driver to Control Fuel Rack Position
Control lever
Delivers Fuel to Injectors at Correct Pressure, Quantity and Timing
Injection Fuel pump
Controls Engine Speed According to Engine Load
Governor
Cuts Fuel Flow to Stop the Engine
Cut off solenoid
Filters Out and Traps Water and Heavy Particles
Sedimenter
36.
Explain the basic operating principle of a mechanical fuel injector as used on diesel fuel systems.
Mechanical fuel injection works with a simple throttle-controlled air valve and a fuel pump, usually running at one-half engine speed. After pulling fuel from a vented fuel tank, the fuel is delivered through a barrel valve that controls the amount of fuel with the position of the air valve.
37.
Why must a diesel fuel injector operate under such high hydraulic fuel pressures
Diesel engines don't have the spark plugs as in the petrol engine, so to ignite the fuel in the combustion chamber the fuel has to be delivered in high pressure in order to complete the strock process of each piston.
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
52010
CRICOS Code:
03548F Version:
1.0 Approved on:
11 Mar 2021
Review Date:
11 Mar 2023
Page 13
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38.
Describe the purpose of the fuel leakage low-pressure return (overflow) circuit as used on a diesel fuel system.
The low pressure return circuit consists of excess fuel that has been allowed to leak injector components for cooling and lubrication purposes as well as overflow fuel from the injection pump. The return circuit transfers the fuel from the leak off points back to the fuel tank under low pressure.
Multiple Choice question. Select the correct answer.
39.
The key feature to ________ nozzles is that they do not have fixed pressure opening and closing values.
A.
Electrohydraulic.
B.
Multiple- orifice.
C.
Mechanical.
D.
Hydraulic.
40.
Electrohydraulic nozzles are found in two [2] general types of current diesel injection systems. Identify which diesel injection systems.
1
Unit injection system
2
Inline pump system
41.
Describe briefly what a CRD system is Common rail diesel (CRD) systems use a direct injection system built around a high-pressure fuel rail feeding solenoid valves and need to withstand the temperature and pressure inside the cylinder.
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
52010
CRICOS Code:
03548F Version:
1.0 Approved on:
11 Mar 2021
Review Date:
11 Mar 2023
Page 14
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42.
Name five [5] inputs to the computer control unit used on the Common Rail Diesel (CRD) systems.
1
MAF sensor
2
Accelerator pedal sensor
3
Engine Speed crank Sensor
4
Engine Speed Cam Sensor
5
Rail pressure sensor
43.
Name five [5] outputs from the computer control unit used on the Common Rail Diesel (CRD) systems.
1
High pressure pump CP1
2
Injector off solenoid
3
EGR valve controller
4
Positive crankcase ventilation (PCV)
5
Injector sensor
44.
Which component drives the high-pressure fuel pump?
Camshaft drives the high-pressure fuel pump.
True or False question
45.
The fuel lines used in Common Rail Diesel (CRD) systems are designed for one-time use only.
☐
True
or
☐
False
46.
Name eight [8] areas where fuel leakage may occur in diesel fuel systems.
1
Bleeder
5
injector
2
Filter plug
6
Bleeder screw
3
Overflow valve
7
Hand primer
4
Injection pump
8
Overflow line
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
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03548F Version:
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Review Date:
11 Mar 2023
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Multiple Choice question. Select the correct answer.
47.
The hoses and pipes require an inspection for physical damage such as ________?
A.
An inspection perishing or cracking from age and wear.
B.
An inspection for security and loose connections.
C.
An inspection for restrictions from twisted, squashed or bent pipeage.
D.
All the answers are correct.
Fill in the Missing Words
48.
Place the missing word to complete the following statement about replacing the fuel filter using the following words
Missing Words: cartridge, clean, filter, fuel, gasket, mounting, rotation, specific.
1
Remove the old ____fuel___ cartridge from the filter base pad using a filter wrench.
2
Drain the _________filter______ to an oil disposal container.
3
Ensure that the old filter ______cartridge____ gasket(s) has been removed. Wipe the filter pad gasket face clean with a lint-free wiper.
4
Remove the new filter cartridge from the shipping wrapping. Fill the filter cartridge with ___clean____, filtered fuel poured carefully into the inlet section.
5
The fuel oil itself should provide the ____gasket_____ and/ or O-ring and mounting threads with adequate lubricant. It is neither necessary nor good practice to use grease or white lube on filter gaskets.
6
Screw the filter cartridge CW (clockwise: right hand threads are used) onto the ___mounting____ pad; after the gasket contacts the pad face, a further _____rotation____ of the cartridge is usually required. In most cases, hand tightening is sufficient, but each filter manufacturer has its own _____specific_____ recommendations on the tightening procedure, and these should be referenced.
49.
Briefly explain the service procedure for the water separator (sedimentares) fuel system filtering below.
First check the sedimentares visually for any damage or leakage, then drain the filter using the drain tab on the bottom of the filter. Then loosen the bolt holding the filter placing a drain pan at the bottom and remove the filter block and drain the remaining fuel and debris in the drain pan. Remove the old filter cartridge and clean the surface inside the filter. Place a new cartridge in the filter put back the filter together with the gasket or o ring and mounting thread with adequate lubricant. Put back the filtering system back to its place and tighten the bolt with the specific torque required. After all thing back to its place crank the engine and let the fuel flow through the system and again post check for any fuel leakage.
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
52010
CRICOS Code:
03548F Version:
1.0 Approved on:
11 Mar 2021
Review Date:
11 Mar 2023
Page 16
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50.
The practice of removing and attempting to clean a dirt-laden, dry filter on the workshop floor should be avoided. Explain why?
The floor might have dirt, metal particles, fuel, oil and other debris which get stock in the filter and after placing back the filter to the vehicle it might create more problems to the engines.
True or False question
51.
A worse practice is reverse blowing out of filters using compressed air. This may loosen sharp particles but leave enlarged openings through which other larger particles can pass. Care must be taken.
☐
True
or
☐
False
52.
Explain the service procedures for checking diesel engine speeds under the following conditions on a mechanically controlled diesel fuel injection system.
Idle
: 1. Fit an accurate diesel engine tachometer to record engine speed (RPM)
2. Start and run engine to operating temperature, bottom radiator hose is warm to touch
3. Allow engine to settle to its idle speed
4. Record engine idle speed on tachometer. Adjust to specifications with idle adjustment stop screw on control lever of injection pump
Maximum Throttle
: 1. Fit an accurate diesel engine tachometer to record engine speed (RPM).
2
.
Start and run the engine to operating temperature, check and adjust idle speed to specifications.
4
.
Open throttle to maximum position (throttle control lever rests on stop screw) and record maximum engine speed on tachometer
4. Adjust maximum speed to specifications with the control lever full throttle stop screw
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
52010
CRICOS Code:
03548F Version:
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11 Mar 2021
Review Date:
11 Mar 2023
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Fill in the Missing Words
53.
Place the missing word to complete the following statement about bleeding fuel system subsystem using the following words
Missing Words: bleed, coupling, primer, Re torque
1
If the system is equipped with a ____primer__ pump, fill only the primary filter with fuel. Then use the primer pump to fill the secondary filter.
2
Locate a bleed point in the system, this ___bleed___ point should be upstream from the injection
circuit and crack open the coupling.
3
_____coupling_____ if the system is not equipped with a hand primer pump, fit one upstream from the transfer pump and actuate until air bubbles cease to exit from the cracked open coupling.
4
___Re torque____ the coupling. Crank the engine for 30 continuous seconds. If the engine fails to start, allow at least a two-minute interval before cranking again. This allows for starter motor cool-down. In most diesel engine systems, the high-pressure circuit will self-prime once the subsystem is primed.
Multiple Choice question. Select the correct answer.
54.
After replacing the fuel filter and once everything is connected, you should lower the vehicle, start the engine, and run the engine to full operation. What should you
check on the fuel filter before doing
anything else? A.
Fuel leaks at the filter.
B.
Nothing, I did a great job.
C.
Fuel pressure.
D.
If the fuel filter is filtering the fuel.
True or False question
55.
After inspecting and servicing the diesel fuel injection system, the vehicle should be checked for fuel leaks and road tested to check that the vehicle operates correctly.
☐
True
or
☐
False
56.
You are inspecting the fuel pump pressure on Mitsubishi Pajero. Referring to the Mitsubishi Pajero “4D5 Engine” in the workshop manual, locate the engine idle speed specification.
Engine idle speed (r/min): 700 ± 100 r/min
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
52010
CRICOS Code:
03548F Version:
1.0 Approved on:
11 Mar 2021
Review Date:
11 Mar 2023
Page 18
of 21
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57.
You have been asked to replace the fuel filter on Mitsubishi Pajero. Referring to the Mitsubishi Pajero
“Fuel System” in the workshop manual, locate the fuel filter torque specification and write the location below.
Fuel filter torque specification: 36Nm
True and False
58.
An automotive technician must adhere to workshop safety guidelines and procedures when using all tools and equipment to inspect and service diesel fuel injection system.
☐
True
or
☐
False
True and False
59.
An automotive technician is required to document the work that was performed on a vehicle. Writing or typing in the description of the steps performed during the inspection and servicing of the vehicle or machinery diesel fuel injection system, including parts and lubricants used should be worded as if the technician is talking to the customer.
☐
True
or
☐
False
True and False
60.
Inspect your tools for cracks, broken parts, or other dangerous conditions before you use them. Never use broken or damaged tools.
☐
True
or
☐
False
True and False
61.
For best results and long tool life, each tool used must be cleaned and checked before placing it back into the toolbox or tool storage room.
☐
True
or
☐
False
Multiple Choice question. Select the correct answer.
62.
Lockout/tagout
practices and procedures are intended to reduce the risk of automotive technicians’ inadvertently using service tools, equipment or materials that have been determined to?
A.
Be unsafe or potentially unsafe.
B.
That are in the process of being serviced.
C.
Both “Be unsafe or potentially unsafe” and “That are in the process of being serviced”.
D.
Neither “Be unsafe or potentially unsafe” and “That are in the process of being serviced”.
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
52010
CRICOS Code:
03548F Version:
1.0 Approved on:
11 Mar 2021
Review Date:
11 Mar 2023
Page 19
of 21
True and False
63.
Disposing of excess diesel fuel, can be dispose into their correct sealed and approved separate container.
☐
True
or
☐
False
True and False
64.
Fuel filters cannot legally be disposed of by simply throwing them away or sending them to a municipal landfill. They must be properly drained and recycled, or your facility risks severe fines for improper disposal.
☐
True
or
☐
False
True and False
65.
An automotive technician must adhere to workshop safety guidelines and procedures and follow the manufactures procedures in the workshop manual for inspecting and servicing vehicle or machinery
diesel fuel injection system.
☐
True
or
☐
False
Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
52010
CRICOS Code:
03548F Version:
1.0 Approved on:
11 Mar 2021
Review Date:
11 Mar 2023
Page 20
of 21
Multiple Choice question. Select the correct answer.
66.
A work order is selected or assigned to a service technician who then performs the listed tasks. The work order should be written so that the technician knows exactly what needs to be done. However, if there is any doubt, the technician should clarify the needed task with the ________ or the person who spoke to the customer.
A.
Service advisor.
B.
Service technician.
C.
Spare parts manager.
D.
New car sales manager.
This is the end of the document Document Name: AURTTF102_AT1 Knowledge Questions
RTO Code:
52010
CRICOS Code:
03548F Version:
1.0 Approved on:
11 Mar 2021
Review Date:
11 Mar 2023
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of 21
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VO
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eTextbook and Media
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m
B
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O Week 2- 20527 22110L
x a MasteringEngineering Mastering x
M Inbox (10,309) - usmikail@gmail x
a Product Detail Page
a Central Service Technical Manual x
O 21) YouTube
i session.masteringengineering.com/myct/itemView?assignmentProblemiD=12443395&offset=next
KHW 1
Problem 12.3
6 of 16
I Review
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93
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P. N
Hg=
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=0.30
0
S
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