Stripping and rebuilding engines for motorsport vehicles

URN: SEMAUT3101
Business Sectors (Suites): Automotive Engineering Suite 3
Developed by: Enginuity
Approved on: 2020

Overview

This standard identifies the competences you need to strip down, examine and rebuild motorsport vehicle engines in accordance with approved procedures. The engine to be dismantled and rebuilt will have been removed from the vehicle, and the activities may take place in a garage/workshop or may have been returned to the manufacturer. In carrying out the stripping and rebuilding operations, you will be required to follow laid-down procedures and specific dismantling and rebuilding techniques. The activities will involve removing all ancillary equipment and components and dismantling the engine down to the various sub-assembly units such as, cylinder block, cylinder heads and pistons. You will then strip the various sub-assemblies down to their component parts and examine the various components for damage and wear and to replace any components that are not in a serviceable condition. You will then be expected to rebuild the engine which will involve fitting replacement or overhauled sub-assembly units (such as cylinder block, piston assemblies, cylinder heads, torque converters, oil pumps) and the replacement of all damaged, worn and `lifed' components. The stripping and rebuilding activities will include making all necessary checks and adjustments to ensure that components are correctly replaced, positioned, aligned, adjusted, torque loaded, locked and fastened, and that the correct sealants are used.

Your responsibilities will require you to comply with organisational policy and procedures for the stripping and rebuilding of the motorsport vehicle engine, and to report any problems with the activities, or with the tools and equipment used that you cannot personally resolve, or that are outside your permitted authority, to the relevant people. You must ensure that all tools, equipment and materials used in the activities are removed from the work area on completion of the activities, and that all necessary job/task documentation is completed accurately and legibly. You will be expected to work as members of a team, with a minimum of supervision, taking personal responsibility for your own actions and for the quality and accuracy of the work that you carry out. Where team working is involved, you must demonstrate a significant personal contribution during the team activities in order to satisfy the requirements of the standard, and competence in all the areas required by the standard must be demonstrated.

Your underpinning knowledge will provide a good understanding of your work, and will provide an informed approach to applying appropriate stripping and rebuilding techniques and procedures on motorsport vehicle engines. You will understand the dismantling and reassembly methods and procedures used, and their application. You will know how the engine functions, the purpose of the individual components and associated defects, in adequate depth to provide a sound basis for carrying out the activities. In addition, you will have sufficient knowledge of these components, to ensure that they are fit for purpose and meet the specifications, thus providing a sound basis for carrying out the reassembly to the required specification.

You will understand the safety precautions required when carrying out the stripping and rebuilding activities associated with motorsport vehicle engines, especially those for lifting, handling and supporting the equipment being removed and replaced. You will be required to demonstrate safe working practices throughout, and will understand your responsibility for taking the necessary safeguards to protect yourself and others in the workplace.


Performance criteria

You must be able to:

  1. work safely at all times, complying with health and safety and other relevant regulations, directives and guidelines
  2. follow the relevant overhauling schedules to carry out the required work
  3. establish, and where appropriate, mark components to aid re-assembly
  4. ensure that any stored energy or substances are released safely and correctly
  5. carry out the stripping and rebuilding activities to overhaul the engine to the agreed level, using the correct tools and techniques
  6. ensure that all removed components are correctly identified and stored in the correct location
  7. report any instances where the overhauling activities cannot be fully met or where there are identified defects outside the planned overhauling schedule
  8. deal promptly and effectively with problems within your control and report those that cannot be solved
  9. ensure that work records are completed, stored securely and available to others, as per organisational requirements
  10. leave the work area in a safe condition on completion of the activities, as per organisational and legal requirements

Knowledge and Understanding

You need to know and understand:

  1. the specific safety precautions to be taken whilst carrying out the  activities (including any specific legislation, regulations or codes of practice relating to the activities, equipment or materials)
  2. the health and safety requirements of the work area  and the activities, and the responsibility these requirements place on you
  3. the hazards associated with  the activities, and how to minimise them and reduce risks
  4. the personal protective equipment and clothing (PPE) to be worn during the activities
  5. how to obtain and interpret drawings, specifications, manufacturers' manuals, history/maintenance reports, and other documents needed in the stripping and rebuilding process
  6. how to carry out currency/issue checks on the specifications you are working with
  7. the quality control procedures to be followed during the stripping and rebuilding operations
  8. the importance for obtaining the correct specification replacement parts, materials and other consumables necessary for the stripping and rebuilding
  9. the company policy on the repair/replacement of components during the stripping and rebuilding process
  10. terminology used in motorsport vehicle engines and engine modules
  11. the basic principles of how the engine functions, its operating sequence, the working purpose of individual units/components and how they interact
  12. the extent to which the equipment is to be dismantled
  13. the sequence to be adopted for the dismantling/reassembling of various types of engine assemblies
  14. the techniques used to dismantle the motorsport vehicle engines without damage to the components or surrounding structure (such as release of energy (pressures/force), draining of fluids, making electrical disconnections, proof marking components to aid reassembly, removing assemblies requiring pressure/force, removing mechanical locking and securing mechanisms/devices) and the need to protect the system integrity by ensuring exposed components are correctly covered/protected)
  15. how to lift and move large components and assemblies; the methods and equipment used to transport, handle and lift the components during the dismantling activities
  16. the need to ensure that lifting and handling equipment is within its current certification dates
  17. methods of checking that components are fit for purpose, how to identify defects and wear characteristics, and the need to replace `lifed' items (seals and gaskets)
  18. the uses of measuring equipment (micrometers, verniers, expansion indicators and other devices)
  19. methods of reassembling the motorsport vehicle engine using new or previously overhauled sub-assemblies (replacing assemblies requiring pressure/force, ensuring correct orientation and location of subassemblies, replacing mechanical locking and securing mechanisms/devices, reconnecting pipes and electrical connectors)
  20. how to make adjustments to replaced components/assemblies to ensure that they function correctly (checking alignment, balancing of rotating components such as flywheels and torque converters, setting working clearance, setting travel, and pre-loading bearings)
  21. the various mechanical fasteners that are used and their method of removal and replacement (rivets, threaded fasteners, special securing devices)
  22. the various types of electrical connector that are used, methods of unlocking, orientation indicators and locating and locking in of the connections
  23. the tools and equipment used in the overhauling activities, and how to check that they are in a safe, tested and usable condition
  24. the importance of ensuring that all tools are used correctly and within their permitted operating range
  25. the importance of ensuring all tools, equipment and components are accounted for and returned to their correct location on completion of the overhaul activities
  26. the procedure for the safe disposal of waste materials
  27. the generation of maintenance documentation and/or reports following the stripping and rebuilding activity
  28. the problems that can occur during the stripping and rebuilding activity, and how they can be overcome
  29. the extent of your own authority and to whom you should report if you have a problem that you cannot resolve
  30. how to access, use and maintain information to comply with organisational requirements and legislation

Scope/range


Scope Performance

  1. Carry out all of the following during the stripping and rebuilding of the motorsport vehicle engine:

    1. obtain and use the appropriate documentation (such as job instructions, engine manuals/drawings, vehicle manuals, specifications, quality control documentation)
    2. adhere to procedures or systems in place for risk assessment, hazardous substances, personal protective equipment and other relevant safety regulations and procedures to realise a safe system of work
    3. provide and maintain safe access and working arrangements for the work area, and ensure that any appropriate environmental conditions can be met
    4. ensure that all oils, fluids and fuel have been drained/removed before breaking into the system
    5. ensure that the engine is suitably supported and that appropriate lifting and handling equipment is available
    6. carry out the stripping and rebuilding activities, using appropriate techniques and procedures
    7. ensure that components and surrounding structures are maintained free from damage and foreign objects
    8. return all tools and equipment to the correct location on completion of the activities
    9. leave the work area in a clean and safe condition on completion of the activities
    10. leave the engine in a condition ready for testing
  2. Carry out the stripping and rebuilding of one of the following types of motorsport vehicle engine:

    1. single seater                       
    2. kart                                
    3. historic vehicle
    4. rallying                                
    5. sports cars                       
    6. other specific approved competition vehicle
  3. Dismantle the motorsport engine, to include removing seventeen of the following:

    1. cylinder blocks                                                           
    2. injector mechanisms
    3. gearboxes                                                                   
    4. pulleys and sprockets
    5. cylinder liners                                                          
    6. belt, chains and gears
    7. cylinder heads                                                         
    8. balancing mechanisms
    9. crank shafts                                                             
    10. seals and gaskets
    11. fly wheels                                                                  
    12. sensing devices
    13. torque converters                                                     
    14. shim buckets and shims
    15. camshaft assemblies                                                
    16. levers and linkages
    17. pistons and rings                                                     
    18. inlet manifolds
    19. connecting rods                                                      
    20. pipe fittings/connectors
    21. timing mechanisms                                                  
    22. filters
    23. bearings(such as shell, ball and race, thrust)
    24. pumps (such as pressure, scavenge, fuel, oil, water)
    25. charging/starting components (such as alternators, starter motors, solenoids, magnetos)
    26. valve mechanisms (such as valves, guides, springs, collets)
    27. mechanical fasteners and mounting studs
  4. Carry out all of the following activities on the equipment being stripped and rebuilt:

    1. carrying out pre-disassembly checks                                   
    2. re-assembling sub-assemblies to unit level
    3. disconnecting and removing wires/cables and attaching suitable cable identification markers      
    4. lapping in of components (such as valves, bearings) where appropriate
    5. disconnecting and removing pipework                                 
    6. setting and adjusting replaced components (such as liner protrusion, crankshaft float)
    7. removing all ancillary components                                             
    8. dismantling equipment to unit/sub-assembly level                
    9. supporting the equipment to be removed
    10. dismantling units to component level                                    
    11. earth bonding of components
    12. proof-marking/labelling of components to aid reassembly    
    13. applying gaskets and sealant/adhesives
    14. replacing all `lifed' items (such as seals, bearings, locknuts)               
    15. tightening fastenings to the required torque
    16. replacing all damaged or defective components
    17. re-assembling components to sub-assembly level
    18. securing components using mechanical fasteners and threaded devices (such as circlips, pins)
    19. applying bolt locking methods (such as split pins, wire locking, lock nuts, stiff nuts, swage nuts)
  5. Inspect all removed components for wear and serviceability using appropriate instrumentation, to include checking ten of the following:

    1. cylinder head for flatness, signs of damage and condition of valve seats and guides
    2. cylinder bores/liners for size/wear/distortion
    3. crankshaft bearings and journals for size/wear
    4. camshaft bearings and cam lobes for size/wear
    5. pistons for cracks, detonation, scoring, ring grooves for wear/damage
    6. connecting rods for small and big end bearing wear, and freedom from twisting and heat damage
    7. valves for pitting, cracks and valve stem wear
    8. fly wheel for wear to clutch face and starter ring gear for damage to teeth
    9. chain/belt mechanisms for wear to drive teeth
    10. pumps for damage and excessive movement in bearings
    11. valve springs for height/tension and signs of damage
    12. clutch assembly for wear to pressure plate and drive plate(s), release bearing for wear/damage
    13. pipes for damage and hoses for cuts, cracks and general deterioration
    14. oil galleries for blockages
    15. crankshafts, flywheels, connecting rods, pistons for balance
    16. transfer port alignment
    17. manifolds for cracks/leakage
    18. cylinder block for flatness
    19. power valves/reed valves for wear and damage
  6. Rebuild motorsport engines, to include fitting seventeen of the following:

    1. cylinder blocks                                                           
    2. seals and gaskets
    3. gearboxes                                                                   
    4. pulleys and sprockets
    5. cylinder liners                                                           
    6. belt, chains and gears
    7. cylinder heads                                                          
    8. levers and linkages
    9. crank shafts                                                              
    10. balancing mechanisms
    11. fly wheels                                                                  
    12. sensing devices
    13. torque converters                                                     
    14. shim buckets and shims
    15. pistons and rings                                                       
    16. inlet manifolds
    17. connecting rods                                                       
    18. pipe fittings/connectors
    19. camshaft assemblies                                               
    20. filters
    21. timing mechanisms
    22. injector mechanisms
    23. bearings (such as shell, ball and race, thrust)
    24. pumps (such as pressure, scavenge, fuel, oil, water)
    25. charging/starting components (such as alternators, starter motors, solenoids, magnetos)
    26. valve mechanisms (such as valves, guides, springs, collets)
    27. mechanical fasteners and mounting studs
  7. Carry out inspections and tests during the rebuilding of the engine, to include eight of the following:

    1. orientation                                                                       
    2. timing (such as valve, ignition, fuel injection)
    3. alignment                                                                        
    4. operating/working clearance (such as valve)
    5. freedom of movement                                                      
    6. belt/chain tension
    7. end float (such as crankshaft, camshaft, bearing)             
    8. torque loading of bolts
    9. gear backlash                                                                  
    10. cylinder liner protrusion                                                          
    11. checking for system blockages (such as oil and airways)
    12. visual inspection for completeness and freedom from damage or foreign objects
  8. Check the stripped and rebuilt motorsport vehicle engine complies with one of the following:

    1. race associations))
    2. legislation, current industry standards, codes of practice and procedures
    3. vehicle manufacturers specification
    4. customer standards and requirements
    5. team/company standards and procedures
    6. specific vehicle requirements

Scope Knowledge


Values


Behaviours


Skills


Glossary


Links To Other NOS


External Links


Version Number

2

Indicative Review Date

2023

Validity

Current

Status

Original

Originating Organisation

Semta

Original URN

SEMAUT3101

Relevant Occupations

Engineering, Engineering and Manufacturing Technologies, Science and Engineering Technicians, Vehicle Trades

SOC Code

5231

Keywords

Engineering; assembly; automotive; disassembly; engine; motorsport; rebuilding; stripping; vehicle