AURTTB101_Assessment_1_Written_Knowledge_Question_V3.docx
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AURTTB101 Inspect and service braking systems
Assessment 1 – Questioning – Written Assessment Student Name
KUuanChunYu
Student ID Number
20230083
Unit Start Date
Unit End Date
Assessment Due Date
Date Submitted
31/10/2023
This cover sheet is to be completed by the student and assessor and used as a record to determine student
competency in this assessment task
The assessment process and tasks were fully explained.
Yes / No
I am aware of which evidence will be collected and how.
Yes / No
I am aware of my right to appeal an assessment decision.
Yes / No
I am aware that I can locate The RTO
Complaints and Appeals Policy and Procedure
on their website at (Insert Website Link)
Yes / No
I have discussed any additional educational support or reasonable adjustments I require in order to undertake this assessment with the Student Support Services Officer and Trainer / Assessor, (if applicable). e.g. Student Handbook
and Access and Equity Policy (Insert Website Link)
Yes / No
I have access to all required resources?
Yes / No
Cheating & Plagiarism Declaration
Student Declaration:
In accordance with The RTO
Plagiarism Policy, I hereby acknowledge by signing this declaration that I have not cheated or plagiarised any work regarding the assessment tasks undertaken in this unit of competency except where the work has been correctly acknowledged.
NOTE: Student must sign this prior to submitting their assessments to the assessor
Signature
KuanChunYu
Date
: __31__ / __10__ / 2023____
Assessment Results
Satisfactory
or
Not Yet
Satisfactory
(Please circle the assessment result for this task)
Feedback to Student - Please provide general feedback on the Student’s performance Student Declaration: - I verify that the work completed is my own and that I was adequately informed of the assessment process prior to commencing this assessment task.
Assessor Declaration: - I verify that I have adequately explained and negotiated the assessment tasks with the
student prior to commencing assessment.
Student Name:
Assessor’s Name:
Document Name:
Student Written Knowledge Assessment – AURTTB101
Created Date:
6 June 2023
Document No:
Insert RTO Name – AURTTB101
Version No:
3.0
Last Modified Date:
14/5/22
© Trinity Institute (Australia) | RTO Code: 41310 | CRICOS Code: 3556F
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AURTTB101 Inspect and service braking systems
Student Signature
Date
Assessor Signature
Date
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 braking systems.
The topics that will be covered in the assessment are:
1.
Prepare to inspect and service braking systems
2.
Inspect braking systems
3.
Service braking systems
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 70
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
To receive a ‘satisfactory’ outcome for this assessment students MUST
successfully answer
all questions. If a student achieves less than 100%, they can reattempt the assessment after further study has taken place. Students who cannot achieve a minimum of 100% you will not have satisfactorily completed this assessment
Your assessor will be looking for the following in this assessment task: - ●
Work health and safety (WHS) and occupational health and safety (OHS) requirements relating to inspecting and servicing braking systems, including procedures for:
o
Lifting and supporting vehicles or machinery
o
Managing and controlling brake dust and brake fluids
●
Environmental requirements, including procedures for trapping, storing and disposing of brake dust and brake fluid released from braking systems
●
Identification and function of major braking components, including:
o
Discs, pads and calipers
o
Drums, brake linings, wheel cylinders and hydraulic components
Document Name:
Student Written Knowledge Assessment – AURTTB101
Created Date:
6 June 2023
Document No:
Insert RTO Name – AURTTB101
Version No:
3.0
Last Modified Date:
14/5/22
© Trinity Institute (Australia) | RTO Code: 41310 | CRICOS Code: 3556F
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AURTTB101 Inspect and service braking systems
o
Master cylinder
o
Hydraulic and vacuum brake booster
o
Diesel engine vacuum brake booster pump
o
Electric and manual park braking systems
●
Basic operation of braking systems, including:
o
Hydraulic braking systems
o
Mechanical braking systems
o
Air over hydraulic systems
o
Air braking systems
●
Types, applications and testing of brake hydraulic fluids
●
Inspection procedures for braking system components, including:
o
Component wear analysis
o
Brake fluid testing
●
Service and adjustment procedures for braking systems, including:
o
Brake bleeding
o
Brake adjustment
o
Park brake adjustment
●
Post-service testing procedures for braking systems, including static and dynamic testing.
Assessment conditions
Assessors MUST
satisfy NVR/AQTF assessor requirements. Competency is to be assessed in the workplace or a simulated environment that accurately reflects performance in a real workplace setting. Assessment MUST
include direct observation of tasks. Where assessment of competency includes third-party evidence, individuals MUST
provide evidence that links them to the braking systems that they have worked on, e.g. repair orders. Assessors MUST
verify performance evidence through questioning on skills and knowledge
to ensure correct interpretation and application. The following resources MUST
be made available: ●
Automotive repair workplace or simulated workplace
●
Workplace instructions
●
Manufacturer braking system specifications
●
Two different vehicles or machinery with disc and drum braking systems requiring servicing
●
Tools, equipment and materials appropriate for inspecting and servicing braking systems.
Resources required
Learning Resources available to students include:
●
Automotive Technology (A System Approach) 6
th
Edition – Chapters 5, 7, 50, 51 & 52
●
Websites –
www.worksafe.vic.gov.au
(Automotive Workshop Safety)
http://what-when-how.com/automobile/brake-operating-systems-automobile/
Document Name:
Student Written Knowledge Assessment – AURTTB101
Created Date:
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Version No:
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Last Modified Date:
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AURTTB101 Inspect and service braking systems
(Mechanical Braking System)
http://what-when-how.com/automobile/air-operated-power-brake-system-
automobile/
●
Trainer Handouts
Results/Re-
assessment
●
The Assessor will grade the assessment and record the result on the front page of this document (S) – Satisfactory if all observable behaviours are correct and (NS) not satisfactory if any areas are left incorrect
●
Feedback will be provided on either result
●
Where a student receives a ‘NS – Not Satisfactory’ result, the assessor will discuss the area of the non-compliant observable behaviour and an opportunity given for re-
assessment. This may be through direct observation or a different method of assessment e.g. verbal/oral questioning, problem solving exercise. ●
If the outcome is again not satisfactory the student result will be deemed (NYC) not yet competent. Additional feedback will be given, and a time agreed upon for further
assessment after additional training and skills practice has taken place, this information will be recorded, dated and signed in the re-assessment area on the last page of this document
●
Where all the assessment tasks have been graded (S) Satisfactory, the student will be deemed C – Competent for the practical component and the result recorded and
signed in the area indicated on the last page of this document
Reasonable Adjustment
If the participant is unable to undertake the written assessment as designed, an interview (verbal questioning) may be used as an alternate approach.
Document Name:
Student Written Knowledge Assessment – AURTTB101
Created Date:
6 June 2023
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Insert RTO Name – AURTTB101
Version No:
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Last Modified Date:
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© Trinity Institute (Australia) | RTO Code: 41310 | CRICOS Code: 3556F
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AURTTB101 Inspect and service braking systems
Assessment 1 – Questioning Written Assessment 1.
Identify five (5) important items of personal safety when inspecting and servicing braking systems?
1
Always wear OSHA approved safety glasses when working on a suspension system or steering system
2
Wear gloves and avoid direct contact
3
Wear respiratory protection
4
Wear face shield
5
Wear safety footwear 2.
List three (3) precautions when jacking a vehicle on the floor.
1
Use the jack only to get a vehicle off the ground, never to hold a vehicle in place 2
Use jack stands when you work underneath your vehicle 3
Never jack up a vehicle without blocking the wheels to keep it rolling.
3.
Why should safety stands be placed under a raised vehicle?
Safety stands must always be used so that there is no chance the vehicle can drop while working on it.
4.
What six (6) precautions should be observed if a vehicle is to be raised on a hoist?
1
Read the owner’s manual before you begin
2
Check the specific lifting points of the vehicle you are working on
3
Never exceed your vehicle lift’s maximum capacity
4
Don’t rely on a single lift arm to bear all the vehicle’s weight
5
Choose an auto lift with automatic safety locks
6
Always engage your lift’s safety features before starting work
5.
What three (3) practical methods of reducing the spread of asbestos should be followed in the workplace? 1
Isolation of asbestos handling area
Document Name:
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AURTTB101 Inspect and service braking systems
2
Wet method
3
Respiratory protection 6.
When handling, trapping, storing and disposing of new or waste hydraulic fluid, which document should you use to find this information?
7.
How should waste hydraulic fluid be stored and disposed?
Safely collect and store all oil waste in clearly marked drums. Storage of waste hydraulic oils should be in a secure and undercover location.
Multiple Choice question. Select the correct answer.
8.
When changing the hydraulic brake fluid, what should you use to catch the waste fluid?
A.
Brake bleeder.
B.
Mop bucket.
C.
Storm water drain.
D.
Funnel.
9.
What are two (2) main aspects to dealing with asbestos in motor vehicle repairs?
1
Identification of asbestos containing components
2
Assessment of health risks
True or False question
10.
All brake fluids are hygroscopic – that is, they readily absorb water.
☐
True
or
☐
False
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11.
Name the eight [8] components of a disc brake assembly below.
1
Brake pads 2
Caliper
3
Disc
4
seal
5
piston seal
6
piston
7
brake hose
8
Bleeder valve
True or False question
12.
A typical fixed caliper housing is designed with one caliper piston.
☐
True
or
☐
False
True or False question
13.
A typical floating caliper housing is designed with one caliper piston.
☐
True
or
☐
False
Fill in the Gaps
14.
Complete the following statement about disc brake caliper function using the following words.
Words: Bleeder, Bottom, Caliper, Compression, Construction, Cylinder, Dust. Hole, Housing, Inspection, Mechanical, Pressure, Seal
A brake __________ converts hydraulic pressure into __________ force. The caliper housing is usually a one-
piece __________ of cast iron or aluminium and has an __________ hole in the top to allow for lining wear inspection. The __________ contains the cylinder bore(s). In the __________ bore is a groove that seats a square-cut __________. This groove is tapered toward the __________ of the bore to increase the __________ on the edge of the seal that is nearest hydraulic __________. The top of the cylinder bore is also
grooved as a seat for the __________ boot. A fluid inlet __________ is machined into the cylinder bore and a __________ valve is located near the top of the casting.
Document Name:
Student Written Knowledge Assessment – AURTTB101
Created Date:
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AURTTB101 Inspect and service braking systems
Multiple Choice question. Select the correct answer.
15.
Disc rotors are typically made from.
A.
Aluminium.
B.
Cast iron.
C.
Both “Aluminium” and “Cast iron”.
D.
Neither “Aluminium” and “Cast iron”.
Multiple Choice question. Select the correct answer.
16.
Composite rotors are made of cast iron and?
A.
Steel.
B.
Aluminium.
C.
Carbon fibre.
D.
All answers are correct.
Multiple Choice question. Select the correct answer.
17.
Solid disc rotors are usually found on?
A.
The front brakes of small, compact vehicles.
B.
The rear brakes of vehicles with rear disc brakes.
C.
The front brakes of large pickup trucks and SUVs.
D.
Both “the front brakes of small, compact vehicles” and “the rear brakes of vehicles with rear disc brakes”.
Multiple Choice question. Select the correct answer.
18.
Caliper housings are made up from?
A.
Aluminium.
B.
Cast iron.
C.
Both “Aluminium” and “Cast iron”.
D.
Neither “Aluminium” and “Cast iron.
Multiple Choice question. Select the correct answer.
19.
Linings are __________ to disc brake pads?
A.
Riveted.
B.
Bonded.
C.
Both “Riveted” and “Bonded”.
D.
Neither “Riveted” and “Bonded.
Multiple Choice question. Select the correct answer.
Document Name:
Student Written Knowledge Assessment – AURTTB101
Created Date:
6 June 2023
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© Trinity Institute (Australia) | RTO Code: 41310 | CRICOS Code: 3556F
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AURTTB101 Inspect and service braking systems
20.
The function of the wheel cylinder is to ______.
A.
Convert hydraulic pressure to a mechanical force at the drum brakes.
B.
Maintain correct shoe position and clearance.
C.
Prohibit the shoe from following the movement of the rotating drum.
D.
Provide the rubbing surface area for the linings.
True or False question
21.
Brake linings are riveted to the brake shoes.
☐
True
or
☐
False
True or False question
22.
Brake linings are bonded to the brake shoes.
☐
True
or
☐
False
True or False question
23.
The brake shoe lining provides friction against the drum to stop the vehicle.
☐
True
or
☐
False
Fill in the Gaps
24.
Complete the following statement about drum brake operation using the following words.
Words: Action, Applied, Brake, Direction, Drum, Effectiveness, Force, Important, Multiplies, Pin, Pressing, Rotating, Shoe, Stop, Vehicle
Drum brake operation is fairly simple. The most important feature contributing to the effectiveness of the braking force supplied by the drum brake is the brake shoe pressure or force directed against the drum. With the vehicle moving in either the forward or reverse direction with the brakes on, the applied force of the brake shoe _pressing against the brake drum increasingly multiplies itself (called self-energizing) because the brake’s anchor pin acts as a brake shoe stop and prohibits the brake shoe from its tendency to follow the movement of the rotating drum.wedging action between the brake shoe and brake drum. The wedging action combined with the applied brake force creates a self-multiplied brake force.
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25.
Name the twenty-four [24] components of a drum brake assembly below.
1
Screw
2
Bleeder plug 3
Boot
4
Cup 5
Piston
6
Wheel cylinder 7
Brake drum bar
8
Brake return spring 9
Brake drum bar 10
parking brake lever 11
Rear shoe 12
Brake self-adjusting kit 13
Drum 14
Adjuster screw
15
Brake adjuster pivot 16
Adjuster lever 17
Actuator lever
18
Lower spring 19
Shoe retaining spring
20
Front shoe 21
22
Star wheel self adjuster 23
Backing plate
24
pin
True or False question
26.
All master cylinders are made of cast iron.
☐
True
or
☐
False
Multiple Choice question. Select the correct answer.
27.
The purpose of the master cylinder is to ______.
A.
Generate the hydraulic pressure needed to apply the brake mechanisms.
B.
Automatically pump the brakes during panic stops.
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AURTTB101 Inspect and service braking systems
C.
Supply mechanical force to the brake mechanisms.
D.
All answers are correct.
Multiple Choice question. Select the correct answer.
28.
If the master cylinder has a large rear chamber and a smaller front chamber.
A.
The large chamber supplies fluid for the rear drum brake.
B.
The large chamber supplies fluid for the front disc brakes.
C.
The vehicle has a dual diagonal split brake system.
D.
The vehicle has four-wheel disc brakes.
Multiple Choice question. Select the correct answer.
29.
An aluminium master cylinder.
A.
Has a plastic fluid reservoir.
B.
Has an anodised bore.
C.
Is often called a composite master cylinder.
D.
All answers are correct.
30.
What is a tandem master cylinder?
The tandem master cylinder transforms applied brake force into hydraulic pressure which is transferred to the wheel
units through two separate circuits 31.
Name the twelve [12] components of a master cylinder assembly below.
Document Name:
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AURTTB101 Inspect and service braking systems
1
Reservoir cover 2
Reservoir diaphragm
3
Reservoir 4
Reservoir Grommet
5
Master cylinder body 6
Spring
7
Spring retainer 8
Primary seal 9
Secondary piston
10
Secondary seal 11
Primary piston assembly
12
Lock ring Fill in the Gaps
32.
Complete the following statement about master cylinder function using the following words.
Words: Brakes, Cylinder, Fluids, Force, Hydraulic, Master, Mechanical, Movement, Pressure
The master brakes transmits the pressure on the brake pedal to each of the fourwheel brakes to stop the vehicle. It changes the driver’s mechanical pressure on the pedal to hydraulic force, which is changed back to mechanical _force at the wheel brake units. The master cylinder uses the fact that fluids are not compressible to transmit the pedal movement to the wheel brake units.
33.
Identify the two (2) basic types of power-assist unit designs?
1
Vacuum assisted
2
Hydraulic assisted True or False question
34.
Power assisted brakes are designed with vacuum-assisted units that use engine vacuum?
☐
True
or
☐
False
True or False question
Document Name:
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35.
Power assisted brakes are designed with vacuum-assisted units that use vacuum developed by an external pump?
☐
True
or
☐
False
Multiple Choice question. Select the correct answer.
36.
The function of the nitrogen-charged pneumatic accumulator on a hydraulic brake booster is to _____.
A.
Prevent power steering fluid from mixing with brake fluid.
B.
Provide reserve power assist pressure if the engine stalls.
C.
Reduce boost pressure when pedal effort is less than 10 psi.
D.
Hold return pressure until the brake pedal is released.
Fill in the Gaps
37.
Complete the following statement about booster function using the following words.
Words: Activate, Apply, Assist, Brakes, Developed, Driver, Engine, External, Hydraulic, Mechanisms, Multiply, Pedal, Pistons, Pump, System, Vacuum, Wheel
Power brakes are nothing more than a standard hydraulic brake system with a booster unit located between the brake _pedal and the master cylinder to help _activated the brakes. Two basic types of power-assist mechanism are used. The first is vacuum assist. These systems use engine_ vacuum, or sometimes vacuum pressure developed by an external vacuum pump, to help apply the brakes. The second type of power assist is hydraulic assists . It is normally found on larger vehicles. This system uses hydraulic pressure developed by
the power steering _pump or other external pump to help apply the brakes. Both vacuum and hydraulic assist act to multiply the force exerted on the master cylinder pistons by the driver. This increases the hydraulic pressure delivered to the _wheel cylinders or calipers while decreasing driver foot pressure.
38.
Name the eleven [11] components of a vacuum booster assembly below.
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AURTTB101 Inspect and service braking systems
1
Vacuum check valve
2
Front housing
3
Rear housing 4
Reaction disc 5
Control valve
6
Pedal pushrod 7
Diaphragm plate 8
Diaphragm
9
Diaphragm return spring 10
Piston 11
Master cylinder push rod
39.
Name the four [4] components of a hydraulic booster assembly below.
1
Power steering gear
2
accumulator 3
power steering pump 4
low pressure return
Fill in the Gaps
40.
Complete the following statement about manual park brake function on vehicles fitted with disc brakes using the following words.
Words: Accessible, Apply, Assembly, Brakes, Cables, Carrier, Drum, Manually, Operate, Parking, Plate, Rear, Self-adjuster, Serviced, Shoes, Smaller, Vehicles, Wheel
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AURTTB101 Inspect and service braking systems
The rear disc/drum or auxiliary drum parking brake arrangement is found on some vehicles with fixed or sliding calipers. On these brakes , the inside of each rear wheel hub and rotor assmebly is used as the parking brake drum. A pair of small brake shoes is mounted on a backing plate that is bolted to the axle housing or the hub carrier . These parking brake shoes _operate independently of the service brakes. They are applied by linkage and cables from the control pedal or lever. The cable at each operates a lever and strut that apply the shoes in the same way that rear drum parking brakes work. The assembly (often called the drum-in-hat system) is a smaller version of a drum brake and is serviced much like any other drum brake. However, they do not have self adjuster . The parking brakes must be adjusted manually with star wheels that are accessible through the backing plate or through the outboard surface of the drum.
True or False question
41.
A rear disc/drum parking brake uses the inside of each rear wheel hub and rotor assembly as a parking brake drum?
☐
True
or
☐
False
True or False question
42.
Rear disc parking brake have a mechanism that forces the pads against to rotor hydraulically.
☐
True
or
☐
False
True or False question
43.
The parking brake keeps a vehicle from rolling while it is parked.
☐
True
or
☐
False
True or False question
44.
The park brake works mechanically, using a lever assembly connected through a cable system to the rear drum service brake.
☐
True
or
☐
False
True or False question
45.
Electric park brake, are fitted with a motor solenoid, so there is no need for parking brake cables and linkages.
☐
True
or
☐
False
Fill in the Gaps
Document Name:
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46.
Complete the following statement about hydraulic brake operation on vehicles fitted with disc brakes using the
following words.
Words: Compressible, Decreases, Force, Increased, Lines, Liquid, Master, Measure, Operate, Output, Piston, Pressure, Reliable, Shoes, Size, System, Transmitted
A hydraulic system uses brake fluid to transfer _pressure from the brake pedal to the pads or shoe . This transfer of pressure is reliable and consistent because liquids are not compressible . That is, pressure applied to a _liquid in a closed system is transmitted by that liquid equally to every other part of that system. Apply a force of 100 pounds per square inch (psi) (690 kPa) through the master cylinder and you can measure 100 psi
(690 kPa) anywhere in the piston and at each wheel where the brakes operate . The force can be increased at
the output (i.e., at the wheel) by increasing the size of the piston, though piston travel lines . The force at the output can be decreased by decreasing the size of the lines , but the piston travel increases.
47.
Explain the operation of the mechanical braking system?
Brakes absorb energy and convert it to heat. Mechanical brakes all act by generating frictional forces as two surfaces rub against each other.The stopping power or capacity of a brake depends largely on the surface area of frictional surfaces as well as on the actuation force applied.
Fill in the Gaps
48.
Complete the following statement about air over hydraulic braking system operation using the following words.
Words: Axle, Brake, Compressor, Cylinder, Fault, Fluid, Foot, Front, Hydraulic, Lines, Master, Output, Passages, Pressure, Proportions, Protection, Pushes, Reservoirs, Service, Supply, Tank
Compressed air from the _compressor is stored in a wet tank in a semi-dried condition. It then flows to the multi-circuit protection valve, which divides the feed to serve the two service reservoirs. Simultaneously, pressurised air from the reservoir combines through internal _passages in the multi-circuit protection valve to operate the remote spring brake actuator through the hand control valve. Two service lines are connected to a
tandem power _cylinder controlled by a dual foot valve. This arrangement maintains air supply to the other circuit in case of a fault develops in one service line. The power piston push rod pushes the tandem master cylinder hydraulic piston forward so that the air pressure is converted to hydraulic pressure. The hydraulic fluid
supply is divided into two circuits to serve the front and rear brake expander cylinders. A hydraulic load sensing valve is installed in the output circuit of rear axle of the tandem master cylinder. This valve appropriately _proportions the braking effort provided by the rear axle based on the load carried. This is achieved by modifying the fluid pressure reaching the rear brake cylinders. Document Name:
Student Written Knowledge Assessment – AURTTB101
Created Date:
6 June 2023
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Last Modified Date:
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© Trinity Institute (Australia) | RTO Code: 41310 | CRICOS Code: 3556F
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AURTTB101 Inspect and service braking systems
Fill in Gaps
49.
Complete the following statement about air braking system operation using the following words.
Words: Brakes, Compressor, Dependent, Engine, Limits, Operate, Pressure, PSI, Reservoirs, Tubing
Air Brakes require at least 100 psi to operate correctly. This pressure is provided by a belt-driven air compressor , and the compressed air is held in one or two air _reservoirs (tanks). A governor mounted on the compressor limits the amount of pressure to about 125 PSI . The reservoirs and the _brakes are connected via steel tubing to a manifold valve (foot valve) usually mounted on the engine side of the bulkhead. A three-
way valve directs the air dependant on the action of the driver.
True or False question
50.
Hygroscopic brake fluid absorbs moisture from the air.
☐
True
or
☐
False
True or False question
51.
DOT 3 brake fluid has a higher boiling point than DOT 4 fluid.
☐
True
or
☐
False
52.
From the image below, explain what the technician is checking for?
If the oil needs replacement 53.
From the image below, explain what the technician is checking for?
Document Name:
Student Written Knowledge Assessment – AURTTB101
Created Date:
6 June 2023
Document No:
Insert RTO Name – AURTTB101
Version No:
3.0
Last Modified Date:
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© Trinity Institute (Australia) | RTO Code: 41310 | CRICOS Code: 3556F
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AURTTB101 Inspect and service braking systems
Temperature of the brake fluid Multiple Choice question. Select the correct answer.
54.
Brake rotors should be checked for.
A.
Thickness.
B.
Parallelism.
C.
Runout
.
D.
All answers are correct.
True or False question
55.
A dial indicator is used to measure runout on a disc rotor.
☐
True
or
☐
False
Fill in the Gaps
56.
Complete the following statement about brake pad inspection using the following words.
Words: Calipers, Friction, Inspected, Manual, Minimum, Pads, Plate, Replacement, Thinnest
Disc brake pads should be checked periodically. Some pads have inspection holes in the caliper body. If they do not, the pads can be inspected from the outer ends of the caliper. If you are not sure the pads are worn enough to warrant replacement , measure them at the thinnest part of the pad. Compare this measurement to the calipher brake pad lining thickness listed in the service manual , and replace the pads if needed. Typically, if the friction material remaining on the backing plate is less than 1/8 inch (3.175 mm), the pads should be replaced. 57.
From the image below, explain what the technician is checking for?
Document Name:
Student Written Knowledge Assessment – AURTTB101
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6 June 2023
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Last Modified Date:
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AURTTB101 Inspect and service braking systems
Thickness of the disc.
Multiple Choice question. Select the correct answer.
58.
Drum brake linings should be replaced when linings are?
A.
Worn to within 1/32 inch (.8mm) of the rivet head.
B.
Contaminated with oil or grease.
C.
Contaminated with brake fluid.
D.
All answers are correct.
59.
List five (5) types of wear to look for when inspecting brake drums?
1
Damage to the drum surface
2
Glazing on the drum surface
3
Uneven wear
4
Circumferential distortion 5
Radial distortion 60.
When must a wheel cylinder be replaced?
Wheel cylinders must be rebuilt or replaced if they show signs of leaking. Wheel cylinders used to be made of cast iron True or False question
61.
Most automotive manufacturers recommend charging the brake fluid periodically.
Document Name:
Student Written Knowledge Assessment – AURTTB101
Created Date:
6 June 2023
Document No:
Insert RTO Name – AURTTB101
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Last Modified Date:
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© Trinity Institute (Australia) | RTO Code: 41310 | CRICOS Code: 3556F
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AURTTB101 Inspect and service braking systems
☐
True
or
☐
False
Multiple Choice question. Select the correct answer.
62.
When bleeding a dual diagonal split brake system, the bleeding sequence is usually _____.
A.
LR-RR-RF-LF.
B.
RF-LF-LR-RR.
C.
RR-LF-LR-RF.
D.
LR-RF-RR-LF.
True or False question
63.
While manually bleeding a brake system, loosens all the brake bleeder screws at the same time.
☐
True
or
☐
False
64.
Explain why bleeding air out of a hydraulic system is important.
If any amount of air is present in the hydraulic system, as the pressure increases, the air compresses due to its Compressible nature. This compressed air reduces the amount of force transmitted by the fluid into the hydraulic system Fill in the Gaps
65.
Complete the following statement about drum brake adjustment using the following words.
Words: Adjustment, Brake, Centre, Designs, Drum, Expanding, Installed, Specified, Supported, Wheels
Perform manual brake adjustments with the vehicle supported on a hoist or stands and off the ground so that the wheels can rotate during adjustment. Exact procedures are different for different brake designs but all are based on the principle of expanding the shoes until they contact the _drums and then backing off the adjustment a specified amount. With the brakes adjusted and the drum adjustments , pump the pedal once or twice to centre the shoes. Recheck the brake adjustment. Fill in the Gaps
66.
Complete the following statement about park brake adjustment using the following words.
Words: Adjustment, Brake, Clearance, Holds, Make, Manufacturer, Parking, Release, Spin, Vehicle
Parking brake testing and _adjustment procedures vary with the vehicle manufacture . A common test is to raise the vehicle off the ground and apply the a specific number of “clicks.” Once the brake is set, attempt to spin the rear wheels. If the wheels spin, release the parking brake and check the rear shoe-to-drum clearance
and adjust if necessary. Recheck the parking brake. If the wheels still spin, adjust the parking brake until the Document Name:
Student Written Knowledge Assessment – AURTTB101
Created Date:
6 June 2023
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AURTTB101 Inspect and service braking systems
brake holds . Release the brake and make sure the wheels spin and the brakes are not dragging. 67.
After brake pad replacement, what is the first thing the technician should do when the vehicle is lowered?
Remove the c-clamp and lower your caliper housing back down over your new pads. When lowered, put the pin back in and tighten your caliper. All that’s left now is just putting your wheel back on! Go get your tire and place it back on your assembly and start to finger tighten your lug nuts back on.
68.
Consider the various checks that you would make after servicing brakes?
Check for brake fluid and vacuum fluid leaks. Inspect brake lines and hoses for perished hoses. Check the brake limiter valve operation. Check the functionality of the ABS system.
Multiple Choice question. Select the correct answer.
69.
Which source of information will give you the most detail about inspecting and servicing brakes on the vehicle you are working on?
A.
Workshop manual.
B.
Owner’s manual.
C.
Google.
D.
Textbooks.
70.
Why is it very important that the Job Card is completed correctly?
The job card is meant to ensure that the technician working on the vehicle, has a detailed patient file which will help
Ensure that every job is completed professionally and every vehicle receives the technician’s full attention and application
Document Name:
Student Written Knowledge Assessment – AURTTB101
Created Date:
6 June 2023
Document No:
Insert RTO Name – AURTTB101
Version No:
3.0
Last Modified Date:
14/5/22
© Trinity Institute (Australia) | RTO Code: 41310 | CRICOS Code: 3556F
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