Auto Motive

AURTTJ011 Balance Wheels And Tyres

30 April 2023 14:59 PM | UPDATED 1 year ago

AURTTJ011 Balance Wheels And Tyres :

AURTTJ011 Balance Wheels And Tyres
AURTTJ011 Balance Wheels And Tyres
    AURTTJ011 Balance wheels and tyres
Assessment 1 – Questioning – Written Assessment
Student Name Student ID Number 
Unit Start Date Unit End Date 
Assessment Due Date Date Submitted 
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 ( )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 ( )    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 Date:            /            / 20           
  Assessment ResultsSatisfactoryorNot 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:
Student SignatureDate:Assessor SignatureDate
    AURTTJ011 Balance wheels and tyres
Student Guide for Written Knowledge Assessment
Overview of AssessmentThis is a written assessment task you will be assess on your knowledge of balancing wheels and tyres. The topics that will be covered in the assessment are: Prepare to balance wheels and tyresConduct wheels and tyres pre-balance inspectionCarry out balancing proceduresComplete 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 assessedTo complete this written assessment, you will need to answer the 34 questions comprising of Multiple Choice, True and False, Fill-in the Gap and Short Answer questions.
Time allowedOn average, the Assessment should take 2 – 4 hours to complete.
LocationThis theory assessment will be completed in a classroom under the supervision of a trainer/assessor.
Decision making rulesTo 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: – Key policies and procedures for balancing wheels and tyres, including:How to locate and interpret manufacturers specifications or equivalent information and workplace procedures for balancing wheels and tyresThe following workplace health and safety requirements and procedures relating to balancing wheels and tyres:Lifting and supporting vehicles and wheelsWorking with balancing machines, including rotating components and flying objectsEnvironmental requirements relating to balancing wheels and tyresProcedures for pre-balance inspection of wheels and tyresWorkplace housekeeping and documentation proceduresWheel balancing machinery, including:Off vehicle balancersOn vehicle balancersWheel balancing equipment and concepts, including:Tyre and wheel run-outStatic and dynamic balanceThe following out of balance effects on wheels:Wheel hop or trampWheel shimmyVibrationTread wear
    AURTTJ011 Balance wheels and tyres
 o Types and applications of wheel weights.
Assessment conditionsThe assessment MUST: Include access to:An automotive repair workplace or simulated workplace that reflects workplace conditions – where simulation is used, it MUST reflect real working conditions by modelling industry operating conditions and contingencies, as well as, using suitable facilities, equipment and resourcesRepair orders and workplace instructions relating to balancing wheels and tyres activityWorkplace procedures relating to balancing wheels and tyres activityManufacturer wheel balancing specifications or equivalent documentationFour [4] different wheels and tyres for balancingWheel balancing machineryTwo [2] different vehicles or machinery requiring wheel/tyre balancingTools, equipment and materials appropriate for balancing wheels and tyresBe demonstrated in the workplace or in a simulated environment that reflects workplace conditionsBe conducted in a safe environmentBe assessed in compliance with relevant policies, procedures, processes and operational manuals directly related to the industry sector for which it is being assessedConfirm consistent performance can be applied in a range of relevant workplace circumstances.
Assessor RequirementsAssessors of this unit MUST: Satisfy the assessor requirements in applicable vocational education and training legislation, frameworks and/or standards
Resources requiredLearning Resources available to students include: Automotive Technology (A System Approach)Websites – Handouts
Results/Re- assessmentThe 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 incorrectFeedback will be provided on either resultWhere 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 documentWhere 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 AdjustmentIf the participant is unable to undertake the written assessment as designed, an interview (verbal questioning) may be used as an alternate approach.
    AURTTJ011 Balance wheels and tyres
Assessment 1 – Questioning
Written Assessment
  1. Identify five (5) important items of personal safety when balancing wheels and tyres?
1) Be sure to use personal protective equipment (PPE).
2) protective eyewear
3) durable clothes
4) metal-toed footwear
5) Utilize wheel balancing tools properly.
  • List three (3) precautions when jacking a vehicle on the floor.
1) Pick a flat and stable surface
2) Put the jack in the right place
3) Use jack stands
  • Why should safety stands be placed under a raised vehicle?

To prevent a lifted vehicle from falling and injuring someone, safety supports should be put beneath it. A jack is used to elevate an automobile, however there is a chance that it might malfunction & drop the car.

Safety stands provide additional support & aid in ensuring that the automobile remains upright & won’t cause harm to anybody. When using a jack to raise a car, always utilize safety stands, as well as place them properly underneath the vehicle.

  • What five (5) precautions should be observed if a vehicle is to be raised on a hoist?
1) Use the Right Hoist
2) Position the Vehicle Correctly
3) Secure the Vehicle
4) Check the Hoist Before Use
5) Never Work Alone

Multiple choice. Circle the correct answer

When lifting heavy objects, you should?   Twist at the waist to change direction.Turns his whole body using his feet.Both A and B. ✔ D. Neither A nor B.   What seven (7) steps should you follow to prevent an injury when lifting heavy objects? 1) Assess the load: Before lifting a heavy item, determine its weight, size, and shape by doing a lo
2) Plan the lift: Choose the optimum way to transfer the item and plan the lift ahead of time, makin
3) Get a good grip:Before lifting, make sure you have a firm grip on the item by utilizing handles or
4) Keep your back straight: When lifting, keep your shoulders back and your back straight. While c
5) Lift using your legs: Instead of putting tension on your back muscles, bend your knees and lift th
6) Hold the load close: Hold the burden close to your body to keep it under control and in balance.
7) Set the load down safely: Use the same lifting-related guidelines when placing the weight down
  • At what height should heavy objects be stored?

Heavy objectsshould be kept in easy-to-reach places that don’t require a lot of bending, stooping, or lifting. The weight, size, & physical capabilities of the individual handling the item will all affect this height differently.

To prevent undue stress on the back muscles, heavier things should often be kept at waist level or below. As a result, lighter items may be kept higher while heavy ones need to be kept closer to the ground. Regardless of their height, it’s crucial to constantly exercise care and practice safe liftin

  • Indicate some of the precautions that are needed when using a wheel balancer?

Follow manufacturer instructions Wear personal protective equipment Check the wheel and tire

Position the wheel correctly Use the appropriate weights Perform regular maintenance

  • What pre-balance checks should be made to wheels prior to carrying out a wheel balance?

Verify for damage: Look for any indications of damage, such as cracks, dents, or punctures, on the wheel and tire. The precision of the wheel balance may be impacted by vibrations brought on by damaged tires or wheels.

Check for wear: Look for indicators of wear, such as uneven tread wear or bald areas, on the tire. The precision of the wheel balance might also be impacted by uneven tire wear by vibration.

Check the valve stem: Make sure the valve stem is in good condition and is not leaking air. A leaking valve stem can cause the tire pressure to fluctuate, which can affect the accuracy of the balance.

  1. What pre-balance checks should be made to tyres prior to carrying out a wheel balance?

Examine the tire for any evidence of damage, such as bulges, cuts, or punctures. Damaged tires should be replaced rather than balanced.

Examine the tread depth & wear pattern of the tires to look for wear. Unevenly worn or tread-wearing tires should not be balanced & should be replaced.

Verify the tire pressure is at the appropriate level by checking the tire pressure. Low tire pressure may create vibration and have an impact on balance.

  1. Name the two (2) types of wheel balancers used today in automotive workplaces and indicate briefly how each type operates?

Static balancers: Using the wheel and tire assembly’s center of gravity as a starting point, static balancers work.

After being installed on a vertical shaft, the wheel is allowed to level out.

The balancer then identifies any sections of the wheel that are heavier and shows where weight has to be added to the assembly to bring it into balance.

The wheel’s outside rim is next where the weights are fastened.

Dynamic balancers: This sort of balancer works by rapidly rotating the wheel and tire assembly to check for any imbalance.

When the assembly has to be balanced, the machine then shows where weight needs to be added.

The wheel’s outside rim is next where the weights are fastened.

  1. Why do wheels and tyres need to be balanced?

Tires and wheels must be balanced because they may have minute weight discrepancies that, when rotated quickly, generate vibrations.

A smoother ride is achieved by adding tiny weights to the wheel rim to assist distribute the weight evenly. Additionally, balanced tires and wheels last longer and are safer.

Multiple choice. Circle the correct answer

  1. A tyre-and-wheel assembly that is out-of-round is said to have?
  1. Radial runout.
    1. Lateral runout.
    1. Excessive runout.
    1. General runout.
  1. How can tyre and wheel runout be checked?

By measuring the amount of lateral or radial movement of the wheel and tire assembly while it is spinning using a dial indicator, tire and wheel runout may be determined.

This may be accomplished by fixing the dial indicator to a set location close to the wheel and rotating the wheel while pushing the indicator tip into contact with the edge of the wheel.

The dial indication may then be used to determine how much runout there is. Utilizing a laser wheel alignment tool is an additional technique that evaluates any deviations from a perfect circle by shining a beam of light across the tire and wheel assembly.

Multiple choice. Circle the correct answer

  1. What is the maximum lateral tyre runout?
  1. 1mm.
    1. 2mm.
    1. 3mm.
    1. 4mm.
  1. What is meant by static balance?

The balance of a wheel & tire combination while it is stationary is referred to as static balance.

It is accomplished by adding weight to the wheel in a position that balances any areas of the tire or wheel that are particularly heavy.

  1. Explain static wheel imbalance and describe the results of static imbalance?

When a wheel & tire assembly’s center of gravity is not distributed uniformly throughout its axis of rotation, static wheel imbalance results. This indicates that the assembly will wobble or shake rather than revolve smoothly.

The results of static imbalance can include: i. Vibrations at low speeds

ii. Uneven tire wear iii. Poor handling

  1. What is meant by dynamic balance?

Dynamic balance is the uniform distribution of mass, including any weights or other counterbalancing devices required to establish balance, around the perimeter of a wheel and tire assembly.

Dynamic balancing seeks to guarantee that any imbalances are addressed at all rotational speeds while taking into consideration the fact that the weight distribution of a wheel and tire assembly might vary as it spins.

This guarantees a quiet, vibration-free ride, lessens tire wear and tear, and enhances the car’s overall performance and handling.

Dynamic balancing is often accomplished with the use of specialist equipment that determines the exact weight and placement of the weights necessary to establish balance based on measurements of the imbalance.

Multiple choice. Circle the correct answer

  1. Dynamic wheel unbalance may result in?
  1. Increased steering effort.
    1. Normal tyre tread life.
    1. Lateral wheel shimmy.
    1. Tyre and wheel tramp.
  • What are some of the effects of a wheel that is out of balance?

A wheel that is out of balance may make the whole car tremble or rattle.

This may lead to uneven tire wear, reduced fuel economy, and perhaps hazardous driving situations.

Multiple choice. Circle the correct answer

  • A tyre that wobbles from side to side is said to have.
  1. Radial runout.
    1. Lateral runout.
    1. Eccentric runout.
    1. None of these answers are correct.
  • Name the different types of wheel weights below.

Adhesive wheel weight

Zinc clip on wheel weight

Zinc uncoated weights for steel rims

Hofmann Power Weight Zinc clip on wheel weight

  • How are wheel weights fitted?

To balance a wheel, weights are attached to the rim. The weights may be fastened to the rim by glue, clips, or by hammering.

The wheel balancer calculates the weight and where it should be placed on the rim depending on the severity and position of the imbalance. The wheel is once again examined for balance once the weights have been placed.

  • Work out the following wheel weight sizes from metric to imperial.

5 grams: 10 grams: 15 grams: 20 grams: 45 grams: 60 grams:     0.011lb






Multiple choice. Circle the correct answer

  • Looking at the wheel balancer machine display below, how much wheel weight is required for this wheel?
  1. 0 grams.
    1. 0.98 grams.0.60 grams.
    1. 15.0 grams.
  • Indicate the sequence for tightening wheel nuts?

1. Tighten the first nut. 2. Tighten the nut directly across from the first nut. 3. Move to the next nut in a star pattern, skipping one nut in between.

  • Continue tightening nuts in a star pattern until all nuts have been tightened. 5. Go back and recheck each nut to ensure it is tight.

Multiple choice. Circle the correct answer

  • Which source of information will give you the most detail about wheels and tyres on the vehicle you are working on?
  1. Workshop manual.
    1. Owner’s manual.
    1. Google.
    1. Textbooks.
True or False question 28. Wear indicator bars on tyre appear as ½ inch wide bands when the tyre tread depth wears to 1/16 inch [1.58mm].
☐✔ True  orFalse

29. Why is it very important that the Job Card is completed correctly?

Because the Job Card serves as a record of the work performed on the vehicle, it is crucial that it be filled out completely.

It includes crucial facts about the client, the vehicle, the repair that needs to be done, the necessary components and supplies, the labor time and expenses, and any other instructions or remarks.

A correctly filled-out Job Card guarantees that the job is done accurately and quickly and that the client is happy with the service they received. In the event of any disputes or claims, it also functions as a legal document.

True or False question 30. The floor of your work area and bench tops should be kept clean, dry and orderly.
☐✔ True  orFalse

Multiple choice. Circle the correct answer

  • When balancing wheels and tyres, what parts can be recycled?
  1. Aluminium wheels.
    1. Steel wheels.
    1. Wheel weights.
    1. All these answers are correct.
  • Referring to the Mitsubishi Pajero Workshop Manual Handout. Locate and interpret the manufacturers specification for maximum “Radial” and “Lateral” wheel runout for a Mitsubishi Pajero fitted with steel rims.

The maximum radial runout for steel rims is 1.0 mm, while the maximum lateral runout is 1.2 mm, according the Mitsubishi Pajero Workshop Manual.

Depending on the model year and particular car, these numbers may change. The precise figures for a certain vehicle should be found in the manufacturer’s specifications, which are crucial to consult.

  • Referring to the Mitsubishi Pajero Workshop Manual Handout. Locate and interpret the manufacturers specification for minimum tread depth.

According to the repair manual, the Mitsubishi Pajero’s minimum tread depth is 1.6 mm.

Multiple choice. Circle the correct answer

  • For lead wheel weight (commercial) waste disposal, disposal MUST be?
  1. Household garbage.
    1. Allow disposal of small (household) quantities of waste containing lead with normal household garbage.
    1. In accordance with the hazardous waste regulations in each state and territory.
    1. All these answers are correct.

True and False

  • An automotive technician must adhere to workshop safety guidelines and procedures and follow the manufactures procedures in the workshop manual for balancing wheel and tyre assemblies.
☐✔ TrueorFalse
AURTTJ011 Balance Wheels And Tyres

True and False

  • The burning and dumping of waste tyres and tubes is an offence under the Environment Protection Act (1970) and council local laws. This is also illegal under the EPA Industrial Waste Resource Guidelines 6.4 – Used Tyres
☐✔ TrueorFalse
  • Referring to the VACC Environmental Guide, what is the main reason burning and dumping of waste tyres and tubes is an offence under the Environment Protection Act (1970) and council local laws.
AURTTJ011 Balance Wheels And Tyres

The Environment Protection Act (1970) and council local regulations consider burning and disposing of used tires and tubes to be crimes since they may damage the environment by emitting noxious gases and contaminating land and water.

AURTTJ011 Balance Wheels And Tyres

Furthermore, dumping discarded tires and tubes illegally might endanger the health and safety of everyone who comes into touch with them.

AURTTJ011 Balance Wheels And Tyres

Multiple Choice question. Select the correct answer.

  • Waste tyres and tubes must be recycled, or if no longer suitable for recycling, what should be done?
  1. Shredded by specialist contractors for appropriate disposal.
    1. Dumped into landfill.
    1. Dumped into the ocean by specialist contractors for appropriate disposal.
    1. All answers are correct.


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