SAQA All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.
SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE: 

Repair and assemble earthmoving equipment cylinder heads 
SAQA US ID UNIT STANDARD TITLE
15129  Repair and assemble earthmoving equipment cylinder heads 
ORIGINATOR
SGB Vehicle Maintenance 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 06 - Manufacturing, Engineering and Technology Manufacturing and Assembly 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 3  NQF Level 03  4 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Passed the End Date -
Status was "Reregistered" 		 2006-11-07  2009-11-07  SAQA 0160/05 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2010-11-07   2013-11-07  

In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 levels unless specifically stated otherwise.  

This unit standard does not replace any other unit standard and is not replaced by any other unit standard. 

PURPOSE OF THE UNIT STANDARD 
People in the field of manufacturing and engineering require the skills, values and knowledge reflected in this unit standard. The learning outcomes in this unit standard also contribute to the exit level outcomes required for various manufacturing and engineering qualifications. The learner is capable to repair and assemble earthmoving equipment cylinder heads, inspect a cylinder head, to repair and report cylinder head faults, to assemble a cylinder head, to record findings and to submit a report. This will contribute to the exit level outcomes required for the National Certificate in maintaining vehicles and related qualifications. 

LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
This unit standard is designed as part of a progression. The credits allocated to this unit standard assume that the learner is competent on the relevant unit standards at the lower level. 

UNIT STANDARD RANGE 
The ranges as indicated under the specific outcomes determine the scope and level of this unit standard.
All work is performed with little or no supervision in accordance with workplace and workshop manual specifications and procedures and in compliance with occupational safety, health and environmental legislation. 

Specific Outcomes and Assessment Criteria: 

SPECIFIC OUTCOME 1 
Read and interpret the job instructions. 
OUTCOME RANGE 
  • Interpret includes to identify the type of cylinder head, tools and equipment.
  • Type of cylinder head includes single and multiple cylinder head type.
  • Tools and equipment includes a valve grinder, measuring equipment, brass drifts, valve guide reamer, valve seat cutter, valve spring compressor and crack detecting equipment. 
    		•

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Results achieved
  • Appropriate tools and equipment are selected.
  • The cylinder head is dismantled and the components and parts are cleaned and inspected.
  • The cylinder head is repaired and assembled.

    Indicators
  • Suitable tools and equipment are selected to carry out cylinder head repairs.
  • The cylinder head is dismantled in the manner and sequence in accordance with the manufacturers manual procedures.
  • The components and parts are cleaned for inspection in accordance with workplace procedures.
  • The components and parts are inspected for damage and wear and the condition is recorded.
  • The cylinder head is repaired and assembled in accordance with workshop manual procedures.
  • Flat rate time schedules are adhered to.
  • The workplace is restored and tools and equipment cleaned and packed away.
  • All SHE procedures are adhered to.

    Understanding confirmed
    Respond to `what if` and `why` questions covering:
  • Causes of component and part wear
  • Cylinder head cracks and warpage
  • Following dismantling and assembling sequences 
    		•

    SPECIFIC OUTCOME 2 
    Dismantle, clean and inspect a cylinder head and components. 
    OUTCOME RANGE 
  • Clean includes free of oil, dirt and carbon to reveal the condition of the components.
  • Components include the valve train assembly.
  • Valve train assembly includes camshaft, hydraulic lifters, lash adjusters, pushrods, rocker arms, valves and valve spring assembly.
  • Inspect includes checking for cracks, burning, erosion between combustion chambers, worn or damaged valve seats and guides, leaking welsh plugs, warpage. 
    		•

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Results achieved
  • Appropriate tools and equipment are selected.
  • The cylinder head is dismantled and the components and parts are cleaned and inspected.
  • The cylinder head is repaired and assembled.

    Indicators
  • Suitable tools and equipment are selected to carry out cylinder head repairs.
  • The cylinder head is dismantled in the manner and sequence in accordance with the manufacturers manual procedures.
  • The components and parts are cleaned for inspection in accordance with workplace procedures.
  • The components and parts are inspected for damage and wear and the condition is recorded.
  • The cylinder head is repaired and assembled in accordance with workshop manual procedures.
  • Flat rate time schedules are adhered to.
  • The workplace is restored and tools and equipment cleaned and packed away.
  • All SHE procedures are adhered to.

    Understanding confirmed
    Respond to `what if` and `why` questions covering:
  • Causes of component and part wear
  • Cylinder head cracks and warpage
  • Following dismantling and assembling sequences 
    		•

    SPECIFIC OUTCOME 3 
    Report damage to and perform repairs on a cylinder head. 
    OUTCOME RANGE 
  • Damage include damaged threads, damage to machined surfaces and warped surfaces.
  • Repair include replacement of leaking welsh plugs; camshaft, bearings, rockers and rocker shafts faults are rectified; clogged threads are cleaned out; broken studs are replaced. 
    		•

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Results achieved
  • Appropriate tools and equipment are selected.
  • The cylinder head is dismantled and the components and parts are cleaned and inspected.
  • The cylinder head is repaired and assembled.

    Indicators
  • Suitable tools and equipment are selected to carry out cylinder head repairs.
  • The cylinder head is dismantled in the manner and sequence in accordance with the manufacturers manual procedures.
  • The components and parts are cleaned for inspection in accordance with workplace procedures.
  • The components and parts are inspected for damage and wear and the condition is recorded.
  • The cylinder head is repaired and assembled in accordance with workshop manual procedures.
  • Flat rate time schedules are adhered to.
  • The workplace is restored and tools and equipment cleaned and packed away.
  • All SHE procedures are adhered to.

    Understanding confirmed
    Respond to `what if` and `why` questions covering:
  • Causes of component and part wear
  • Cylinder head cracks and warpage
  • Following dismantling and assembling sequences 
    		•

    SPECIFIC OUTCOME 4 
    Assemble a cylinder head. 
    OUTCOME RANGE 
    Assemble includes using the appropriate tools and equipment and following the assembling sequence of components. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Results achieved
  • Appropriate tools and equipment are selected.
  • The cylinder head is dismantled and the components and parts are cleaned and inspected.
  • The cylinder head is repaired and assembled.

    Indicators
  • Suitable tools and equipment are selected to carry out cylinder head repairs.
  • The cylinder head is dismantled in the manner and sequence in accordance with the manufacturers manual procedures.
  • The components and parts are cleaned for inspection in accordance with workplace procedures.
  • The components and parts are inspected for damage and wear and the condition is recorded.
  • The cylinder head is repaired and assembled in accordance with workshop manual procedures.
  • Flat rate time schedules are adhered to.
  • The workplace is restored and tools and equipment cleaned and packed away.
  • All SHE procedures are adhered to.

    Understanding confirmed
    Respond to `what if` and `why` questions covering:
  • Causes of component and part wear
  • Cylinder head cracks and warpage
  • Following dismantling and assembling sequences 
    		•

    SPECIFIC OUTCOME 5 
    Apply safety procedures during the dismantling, repair and assembling process. 
    OUTCOME RANGE 
  • Safe working practises.
  • No damage to tools and equipment.
  • Wearing of personal protective equipment (PPE).
  • Use and disposal of cleaning agents and fluids.
  • Following SHE procedures. 
    		•

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Results achieved
  • Appropriate tools and equipment are selected.
  • The cylinder head is dismantled and the components and parts are cleaned and inspected.
  • The cylinder head is repaired and assembled.

    Indicators
  • Suitable tools and equipment are selected to carry out cylinder head repairs.
  • The cylinder head is dismantled in the manner and sequence in accordance with the manufacturers manual procedures.
  • The components and parts are cleaned for inspection in accordance with workplace procedures.
  • The components and parts are inspected for damage and wear and the condition is recorded.
  • The cylinder head is repaired and assembled in accordance with workshop manual procedures.
  • Flat rate time schedules are adhered to.
  • The workplace is restored and tools and equipment cleaned and packed away.
  • All SHE procedures are adhered to.

    Understanding confirmed
    Respond to `what if` and `why` questions covering:
  • Causes of component and part wear
  • Cylinder head cracks and warpage
  • Following dismantling and assembling sequences 
    		•

    SPECIFIC OUTCOME 6 
    Interact with others while diagnosing and repairing a cylinder head. 
    OUTCOME RANGE 
  • Interacting includes verbal and written communication.
  • Communication includes verbal and written reporting.
  • Written communication includes the listing and ordering of replacement parts. 
    		•

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Results achieved
  • Appropriate tools and equipment are selected.
  • The cylinder head is dismantled and the components and parts are cleaned and inspected.
  • The cylinder head is repaired and assembled.

    Indicators
  • Suitable tools and equipment are selected to carry out cylinder head repairs.
  • The cylinder head is dismantled in the manner and sequence in accordance with the manufacturers manual procedures.
  • The components and parts are cleaned for inspection in accordance with workplace procedures.
  • The components and parts are inspected for damage and wear and the condition is recorded.
  • The cylinder head is repaired and assembled in accordance with workshop manual procedures.
  • Flat rate time schedules are adhered to.
  • The workplace is restored and tools and equipment cleaned and packed away.
  • All SHE procedures are adhered to.

    Understanding confirmed
    Respond to `what if` and `why` questions covering:
  • Causes of component and part wear
  • Cylinder head cracks and warpage
  • Following dismantling and assembling sequences 
    		•

    SPECIFIC OUTCOME 7 
    Discuss and explain a cylinder head operation and fault-finding procedures. 
    OUTCOME RANGE 
  • Operation includes the basic function of the various components in a cylinder head.
  • Fault-finding includes using appropriate tools and equipment, diagnostic procedures, manufacturer specific manuals. 
    		•

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Results achieved
  • Appropriate tools and equipment are selected.
  • The cylinder head is dismantled and the components and parts are cleaned and inspected.
  • The cylinder head is repaired and assembled.

    Indicators
  • Suitable tools and equipment are selected to carry out cylinder head repairs.
  • The cylinder head is dismantled in the manner and sequence in accordance with the manufacturers manual procedures.
  • The components and parts are cleaned for inspection in accordance with workplace procedures.
  • The components and parts are inspected for damage and wear and the condition is recorded.
  • The cylinder head is repaired and assembled in accordance with workshop manual procedures.
  • Flat rate time schedules are adhered to.
  • The workplace is restored and tools and equipment cleaned and packed away.
  • All SHE procedures are adhered to.

    Understanding confirmed
    Respond to `what if` and `why` questions covering:
  • Causes of component and part wear
  • Cylinder head cracks and warpage
  • Following dismantling and assembling sequences 
    		•


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
    My assessment will be governed by the policies and guidelines of the MERSETA Education and Training Quality Assuror who has jurisdiction over this field of learning. My assessor will (at the very least) be accredited and have a technical qualification in this learning area.

    I can be assessed in the language of my choice although if I have to report incidents or conditions to someone else, I will be assessed on my ability to report in the language commonly used in my working environment.

    I will be assessed in the workplace but I can submit documents, projects, test results and assignments that were not produced in the workplace.

    I can be assessed against this unit standard to obtain credits or as part of an integrated assessment for a qualification. 

    UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    1. Names and functions of:
  • Cylinder head components and parts

    2. Attributes, descriptions, characteristics and properties:
  • Cylinder head construction
  • Design differences

    3. Sensory cues:
  • What I see, hear, smell and feel during the process

    4. Purpose of:
  • Cylinder head
  • Valve train assembly
  • Components and parts

    5. Regulations, legislation, agreements, policies, standards:
  • Quality procedures
  • Company policies and procedures
  • SHE requirements

    6. Theory: rules, principles, laws:
  • Principals of combustion
  • Engine top end construction
  • Combustion chamber construction

    7. Relationships, systems:
  • The function and operation of the cylinder head assembly in relation to the vehicle engine 
    		•

    UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems:
  • Relating to repairing cylinder heads. 
    		•

    UNIT STANDARD CCFO WORKING 
    Work effectively with others:
  • When interacting with team members and colleagues during the planning, preparation, and completion and reporting phases when repairing cylinder heads. 
    		•

    UNIT STANDARD CCFO ORGANISING 
    Organise and manage myself and my activities:
  • When preparing a cylinder head repairs;
  • When working in accordance with service and flat rate schedules;
  • When managing resources and my time. 
    		•

    UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively:
  • When completing and processing written reports;
  • When submitting the reports to the relevant department. 
    		•

    UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically:
  • When using special tools and test equipment to repair cylinder heads;
  • When using information technology to source technical data and to generate and submit reports. 
    		•

    UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrate an understanding of the world as a set of related systems:
  • When I can explain and justify my actions and procedures followed. 
    		•

    UNIT STANDARD ASSESSOR CRITERIA 
    N/A 

    UNIT STANDARD NOTES 
    N/A 

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  24456   National Certificate: Maintaining Vehicles  Level 3  NQF Level 03  Passed the End Date -
    Status was "Reregistered"     		 2008-02-06  Was MERSETA until Last Date for Achievement 


    PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD: 
    This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here.
     
    NONE 


    All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.