Remove and fit heavy goods and public service vehicle basic Mechanical, Electrical and Trim (MET) components

Business Sectors (Suites): Coachbuilding
Developed by: IMI
Approved on: 30 Mar 2020


​This standard is about the routine removal and fitting of basic mechanical, electrical and trim (MET) components to heavy goods and public service vehicles. It is also about checking the operation of the components fitted.

Performance criteria

You must be able to:

P1. use the appropriate personal protective equipment when removing and fitting basic MET components
P2. protect the vehicle and its contents effectively when removing and fitting basic MET components
P3. select and use the correct tools and equipment for the components you are going to remove or fit
P4. ensure that the tools and equipment you require are in a safe working condition
P5. remove and fit basic MET components following:

P5.1. removal and fitting procedures
P5.2. manufacturers' instructions
P5.3. your workplace procedures
P5.4. health, safety, environmental and legal requirements
P6. work in a way which minimises the risk of: 

P6.1. damage to other vehicle systems, units and components 
P6.2. contact with leakage and hazardous substances 
P6.3. damage to your working environment
P6.4. injury to self and others 
P7. store all removed components safely in the correct location
P8. check that the components you have fitted operate correctly following the manufacturer's specification
P9. promptly report any additional faults you find during the course of your work to the relevant person(s) 
P10. ensure your records are accurate, complete and passed to the relevant person(s) within the agreed timescale and in the format required 
P11. complete all activities within the agreed timescale
P12. promptly report any anticipated delays in completion to the relevant person(s) 

Knowledge and Understanding

You need to know and understand:

*Legislative and organisational requirements and procedures *
K1. the legal requirements relating to the vehicle (including road safety requirements)
K2. the implications on an Operator’s Licence of not carrying out repairs and inspections correctly
K3. the legislation and workplace procedures relevant to: 

K3.1. health and safety 
K3.2. the environment (including waste disposal) 
K3.3. appropriate personal and vehicle protective equipment
K4. your workplace procedures for: 

K4.1. recording remove/fit information 
K4.2. the referral of problems
K4.3. reporting delays to the completion of work 
K5. the work that needs to be done and the standard required 
K6. the importance of documenting remove/fit information
K7. the importance of working to agreed timescales and keeping others informed of progress
K8. the relationship between time and costs
K9. the importance of promptly reporting anticipated delays to the relevant person(s) 
K10. the hazards associated with working on or near high voltage electrical vehicle components

Use of technical information
K11. how to find, interpret and use sources of information applicable to the removal and fitting of basic MET components
K12. the importance of using the correct sources of technical information

Tools and equipment
K13. how to select, check and use all the tools and equipment required to remove and fit basic MET components *

Removing and fitting basic MET components
K14. the procedures for removing and fitting *basic MET components 
K15. the methods of storing removed parts and the importance of storing them correctly 
K16. the different types of fastenings and the reasons for their use 
K17. the need for correct alignment of components and the methods used to achieve this 
K18. the types of quality checks that can be used to ensure correct alignment and operation of components to manufacturer's specification and their purpose 


1. **Basic MET components** include:

1.1. bumpers
1.2. lighting units 
1.3. batteries 
1.4. interior trim components 
1.5. exterior trim components 
1.6. radiators
1.7. intercoolers
1.8. fans

2. Tools and equipment are:

2.1. hand tools
2.2. manufacturer’s specified and specialist tools
2.3. workshop equipment

Scope Performance

Scope Knowledge





This section contains examples and explanations of some of the terms used but does not form part of the standard.

Agreed timescales
Examples include: manufacturer’s recommended work times, job times set by your company or a job time agreed with a specific customer.

Heavy goods and public service vehicles
These are medium and large goods vehicles, buses and coaches of 3500kgs gross vehicle mass (GVM) and above.

Links To Other NOS

External Links

Version Number


Indicative Review Date

31 Mar 2024





Originating Organisation


Original URN


Relevant Occupations

Bus and Coach Body Repairer, Coachbuilder

SOC Code



remove: fit: basic: heavy goods and public service vehicle: Mechanical Electrical Trim: (MET): components