Diagnose and rectify motorcycle transmission and driveline system faults

URN: IMIMC13
Business Sectors (Suites): Maintenance and Repair - Motorcycle
Developed by: IMI
Approved on: 2021

Overview

This standard is about diagnosing and rectifying mechanical, hydraulic and electrical/electronic faults occurring within motorcycle gearboxes, clutches, driveline and hubs and bearings.

In this standard the term ‘motorcycle’ includes motorcycles, scooters, mopeds and motorcycle-derived vehicles with three or four wheels (such as quad bikes) on which the rider sits.


Performance criteria

You must be able to:

P1. use suitable personal protective equipment and motorcycle coverings (where applicable) when using diagnostic methods and carrying out rectification activities
P2. ensure the motorcycle and the work area is safe prior to commencing work 
P3. support the identification of transmission and driveline system faults by reviewing motorcycle:

P3.1. technical data
P3.2. diagnostic test procedures
P4. select, prepare and check all the required equipment following manufacturer's instructions prior to use
P5. use diagnostic methods which are relevant to the symptoms presented 
P6. collect diagnostic information in a logical and systematic way relevant to the diagnostic methods used
P7. collect sufficient diagnostic information to enable an accurate diagnosis of transmission and driveline system faults
P8. accurately identify and record any system deviation from acceptable limits 
P9. ensure your assessment of dismantled sub-assemblies, units and components accurately identifies their condition and suitability for repair or replacement 
P10. promptly inform the relevant person(s) where repairs are uneconomic or unsatisfactory to perform
P11. use the equipment required correctly and safely throughout all rectification activities
P12. carry out all diagnostic and rectification activities following: 

P12.1. manufacturer's instructions
P12.2. industry recognised repair methods
P12.3. your workplace procedures 
P12.4. health, safety and environmental requirements
P13. work in a way which minimises the risk of: 

P13.1. damage to other motorcycle systems, units and components
P13.2. contact with leakages and hazardous substances
P13.3. damage to working environment
P13.4. injury to self and others
P14. ensure all repaired and replaced units and components conform to the motorcycle operating specification and any legal requirements

P15. correctly adjust units and components to ensure that they operate to meet system requirements, when necessary
P16. promptly record and report any additional faults you notice during the course of work 
P17. use testing methods which are suitable for assessing the performance of the rectified system 
P18. ensure the rectified transmission and driveline system performs to the motorcycle operating specification and any legal requirements prior to returning it to the customer
P19. ensure your records are accurate, complete and promptly passed to the relevant person(s) in the format required
P20. complete all system diagnostic and rectification activities within the agreed timescale
P21. 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
ing methods
K1. the health and safety legislation, environmental requirements and workplace procedures relevant to workshop practices and personal and motorcycle protection when diagnosing and rectifying transmission and driveline system faults
K2. legal requirements relating to the motorcycle (including road safety requirements)
K3. your workplace procedures for:

K3.1. recording and reporting diagnostic and rectification activities
K3.2. the referral of problems
K3.3. reporting delays to the completion of work
K4. the importance of working to industry recognised diagnostic procedures and processes and obtaining the correct information for diagnostic activities to proceed
K5. the importance of documenting diagnostic and rectification information
K6. the importance of working to agreed timescales and keeping others informed of progress
K7. the relationship between time, costs and productivity
K8. the importance of promptly reporting anticipated delays to the relevant person(s) 

Electrical and electronic principles
K9. electrical and electronic principles associated with transmission and driveline systems, including types of sensors and actuators, their application and operation
K10. how electrical and electronic transmission and driveline systems operate, including electrical component function, electrical inputs, outputs, voltages and oscilloscope patterns, digital and fibre optics principles
K11. the interaction between electrical, electronic and mechanical components within vehicle transmission and driveline systems
K12. how transmission and driveline electrical systems interlink and interact, including multiplexing
K13. electrical symbols, units and terms
K14. electrical safety procedures 

K15. the hazards associated with working on or near high energy electrical vehicle components

Use of diagnostic and rectification equipment
K16. how to select, prepare and check the accuracy of diagnostic testing equipment
K17. how to use diagnostic and rectification equipment for transmission and driveline mechanical and hydraulic systems, specialist repair tools and general workshop equipment

Transmission and driveline system faults, their diagnosis and correction
K18. how motorcycle transmission and driveline mechanical and hydraulic systems are constructed, dismantled, reassembled and operate 
K19. the types and causes of motorcycle transmission and driveline mechanical and hydraulic system unit and component faults and failures
K20. transmission and driveline mechanical and hydraulic system unit and component replacement procedures, the circumstances which will necessitate replacement and other possible courses of action
K21. how to find, interpret and use sources of information on transmission and driveline system operating specifications, diagnostic test procedures, repair procedures and legal requirements
K22. motorcycle operating specifications for limits, fits and tolerances relating to transmission and driveline mechanical and hydraulic systems for the types of motorcycle on which you work
K23. how to select and carry out the correct diagnostic testing method 
K24. how to assess and interpret results of the condition of components 
K25. how to make cost effective recommendations for rectification
K26. how to carry out the rectification activities in order to correct faults in the transmission and driveline mechanical and hydraulic systems
K27. the relationship between test methodology and the faults repaired – the use of appropriate testing methods


Scope/range

1 Transmission and driveline systems are:

1.1. clutch
1.2. manual gearbox
1.3. automatic and semi-automatic gearbox
1.4. continuously variable transmission (CVT)
1.5. chain and sprockets
1.6. drive shafts
1.7. gear drive
1.8. belts and pulleys 
1.9. wheel bearings, hubs and seals

2 Diagnostic methods are:

2.1. sensory
2.2. measurement
2.3. functional testing

3 Equipment is:

3.1. diagnostic and rectification equipment for mechanical transmission systems
3.2. diagnostic and rectification equipment for electrical transmission systems
3.3. specialist repair tools
3.4. general workshop equipment

4 Faults are:

4.1. mechanical
4.2. hydraulic
4.3. electrical and electronic

5 Rectification activities are:

5.1. dismantling
5.2. repair and replacement of units and components
5.3. adjustment of units and components
5.4. reassembly
5.5. functional testing​


Scope Performance


Scope Knowledge


Values


Behaviours


Skills


Glossary

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

Diagnostic information
This relates to mechanical condition, including wear, run out and any electrical measurements

Functional testing
Examples include performance testing and road testing where relevant

Motorcycles
In this standard the term ‘motorcycle’ includes motorcycles, scooters, mopeds and motorcycle-derived vehicles with three or four wheels (such as quad bikes) on which the rider sits.

Recommendations
Examples include servicing, dismantling for further inspection and test, repair and replacement

Sensory diagnostic methods 
These may include looking, listening, smelling and touching for heat.

Transmission Area
Clutch assemblies, clutch operating systems, gear boxes, drives, hubs and final drive assemblies

Transmission and driveline system faults*
These are faults that require a two or more-step diagnostic activity using a prescribed process or format to identify the cause


Links To Other NOS


External Links


Version Number

3

Indicative Review Date

2024

Validity

Current

Status

Original

Originating Organisation

IMI Ltd

Original URN

MC12

Relevant Occupations

ATV Diagnostic Technician, Engineering, Motorcycle Diagnostic Technician, Vehicle Trades

SOC Code

5231

Keywords

Motorcycle; ATV; diagnose; rectify; transmission; driveline; system; faults; clutch; remove; replace; hubs; bearings