Competency in Removing and Replacing Light Vehicle Chassis Units and Components
This element focuses on the practical competency required to safely remove and replace chassis components such as suspension arms, steering racks, subframes, and anti-roll bars on light vehicles. It emphasizes adherence to health and safety procedures, accurate interpretation of technical data, proper tool usage, and thorough post-work inspection to ensure vehicle integrity and roadworthiness.
Assessment criteria
Topic Overview
The IMI Level 2 Diploma in Light Vehicle Maintenance and Repair Competence is a vocational qualification designed for learners who are already working in or aspiring to work in the motor vehicle industry. It covers the essential skills and knowledge required to perform routine maintenance, diagnostic checks, and repairs on light vehicles, including cars and vans. This diploma is recognised by employers across the UK and provides a solid foundation for further progression to Level 3 qualifications or apprenticeships.
The course is structured around practical competence, meaning you will be assessed on your ability to carry out tasks safely and effectively in a workshop environment. Key areas include health and safety, vehicle systems (engine, transmission, steering, suspension, brakes, electrical), and diagnostic procedures. By the end of the diploma, you should be able to independently perform tasks such as servicing, fault finding, and component replacement to industry standards.
This qualification matters because it directly aligns with the skills gap in the automotive sector. With the rise of electric vehicles and advanced driver-assistance systems, technicians with a solid foundation in traditional and modern vehicle technology are in high demand. The IMI Level 2 Diploma ensures you are job-ready and can contribute to a professional workshop from day one.
Key Concepts
Core ideas you must understand for this topic
- →Health and safety regulations: Understanding COSHH, risk assessments, and safe use of tools and equipment is non-negotiable.
- →Vehicle systems: You must know the function and common faults of engines, transmissions, braking systems, steering, suspension, and electrical circuits.
- →Diagnostic procedures: Using fault codes, multimeters, and systematic checks to identify issues efficiently.
- →Maintenance schedules: Knowing service intervals, fluid types, and inspection points for different vehicle makes and models.
- →Workshop practices: Proper use of ramps, jacks, and lifting equipment; correct disposal of waste; and accurate record-keeping.
Learning Objectives
What you need to know and understand
- Be able to work safely when carrying out removal and replacement activities, Be able to use relevant information to carry out the task, Be able to use appropriate tools and equipment, Be able to carry out removal and replacement of light vehicle chassis units and components., Be able to record information and make suitable recommendations
Assessment Criteria
Key criteria assessors look for in your portfolio
- Award credit for demonstrating correct selection and use of personal protective equipment (PPE) and following lock-out/tag-out procedures where applicable.
- Evidence must show accurate interpretation of manufacturer's torque settings and sequence for chassis component reassembly.
- Assessors should verify that the candidate performs a final functional check and records all work in the service sheet with clear recommendations for additional repairs.
Assessment Guidance
Guidance for achieving higher grades
- 💡Always cross-reference the vehicle-specific repair manual for removal sequences; this is a key assessment criterion.
- 💡When recording information, note any component condition observations and justify recommendations for further work—assessors look for diagnostic thinking.
- 💡Practice safe working habits consistently, as any lapse can result in an immediate fail in competence-based assessments.
- 💡When performing practical assessments, talk through your actions. Explain why you are doing each step – this shows the assessor you understand the process, not just that you can follow instructions.
- 💡In written exams, use correct technical terminology. For example, say 'disc brake calliper' instead of 'brake thing'. This demonstrates your knowledge and helps you gain marks.
- 💡Always refer to the manufacturer's data (e.g., service schedules, torque settings) during assessments. This shows you can use industry-standard resources, which is a key competence.
Common Mistakes
Common errors to avoid in your coursework
- Over-tightening or under-tightening critical fasteners due to skipping torque-to-yield specifications or reusing one-time-use bolts.
- Failing to support vehicle weight adequately when removing suspension components, leading to risk of injury or damage.
- Neglecting to perform wheel alignment after replacing chassis parts, causing premature tire wear and handling issues.
- Misconception: 'If the warning light is off, the system is fine.' Correction: Many faults do not trigger warning lights until they become serious. Always perform visual and functional checks as part of routine maintenance.
- Misconception: 'Using any brake fluid is fine as long as it's the same colour.' Correction: Brake fluids have different boiling points and chemical compositions (DOT 3, 4, 5.1). Using the wrong type can cause brake failure. Always check the vehicle manufacturer's specification.
- Misconception: 'Tightening bolts as hard as possible prevents loosening.' Correction: Over-tightening can strip threads or distort components. Always use a torque wrench and follow manufacturer torque settings.
Frequently Asked Questions
Common questions students ask about this topic
Pass / Merit / Distinction Evidence Checklist
How your portfolio evidence is graded for THE INSTITUTE OF THE MOTOR INDUSTRY Competency in Removing and Replacing Light Vehicle Chassis Units and Components
Every vocational unit is marked against named criteria rather than an exam percentage. Your tutor's brief lists the exact codes for this unit — here is what each band is asking you to do.
Demonstrate baseline knowledge, accurate terminology, and core practical application.
Provide detailed analysis, structured explanations, and clear workplace reasoning.
Deliver thorough evaluation, original problem solving, and fully justified recommendations.
Before You Start
Prior knowledge that will help with this topic
- •Basic understanding of vehicle components (e.g., wheels, engine, brakes) – often covered in a Level 1 qualification or introductory course.
- •Familiarity with workshop safety practices, such as using personal protective equipment (PPE) and identifying hazards.
- •Ability to use basic hand tools (spanners, screwdrivers, pliers) and interpret simple technical diagrams.
Coursework AI Review
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Key Terminology
Essential terms to know
- Be able to work safely when carrying out removal and replacement activities, Be able to use relevant information to carry out the task, Be able to use appropriate tools and equipment, Be able to carry out removal and replacement of light vehicle chassis units and components., Be able to record information and make suitable recommendations
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