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Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge

Elements and Performance Criteria

1. Perform tune up
   • Determine firing pressures and adjust to specification, as applicable
   • Perform air restriction, boost, back pressure and flow tests according to manufacturer recommendations using applicable test equipment
   • Record readings and determine variances from specifications
   • Determine density of exhaust smoke
   • Adjust valve clearance and/or timing to specifications
   • Adjust injection pump or injector timing to specification
   • Adjust engine parameters using methods appropriate to technology of engine
   • Determine if injector opening pressure is within specification and adjust, arrange replacement or repair if faulty
2. Determine job requirements
   • Follow standard operating procedures (SOPs)
3. Comply with work health and safety (WHS) requirements at all times
4. Use appropriate personal protective equipment (PPE) in accordance with SOPs
5. Identify job requirements from specifications, drawings, job sheets or work instructions
6. Compression test engine
   • Remove injectors and isolate fuel system for each cylinder
7. Select and fit appropriate adaptors
8. Obtain, interpret, record and correct readings for adaptor used
9. Use correct compression readings for adaptor
   • Determine firing pressures and adjust to specification, as applicable
10. Perform air restriction, boost, back pressure and flow tests according to manufacturer recommendations using applicable test equipment
11. Record readings and determine variances from specifications
12. Determine density of exhaust smoke
13. Adjust valve clearance and/or timing to specifications
14. Adjust injection pump or injector timing to specification
15. Adjust engine parameters using methods appropriate to technology of engine
16. Determine if injector opening pressure is within specification and adjust, arrange replacement or repair if faulty

Range Statement

This field allows for different work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included.
Engine firing pressure control adjustment methods include the following:	reflashing of electronic control module (ECM) unit where electronic control is used manual adjustment of: governor rack travel torque spring load limit over speed trips aneroid or fuel ratio control to specification

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