Unit of competency Outline

Date retreived
23/07/2026 11:17 PM AWST

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Tune diesel engines

Tune diesel engines

Unit of competency
National Code
MEM27005
State Code
OAT33
TGA Status
Current
DTWD Status
Approved
Current Release Number
1.00
Current Release Date
26/06/2019
View on TGA
State Implementation and Classification
Approved Date
Field of Education
030503 - Vehicle Mechanics
Original Release Date
Nominal Hours
36
Description
This unit of competency defines the skills and knowledge required to compression test and tune up the engine.It applies to tune up procedures and evaluation of engine performance on compression ignition engines.No licensing, legislative or certification requirements apply to this unit at the time of publication.Band: AUnit Weight: 4
Notes
Elements and Performance Criteria
1 Determine job requirements
  • 1.1 Follow standard operating procedures (SOPs)
  • 1.2 Comply with work health and safety (WHS) requirements at all times
  • 1.3 Use appropriate personal protective equipment (PPE) in accordance with SOPs
  • 1.4 Identify job requirements from specifications, drawings, job sheets or work instructions
2 Compression test engine
  • 2.1 Remove injectors and isolate fuel system for each cylinder
  • 2.2 Select and fit appropriate adaptors
  • 2.3 Obtain, interpret, record and correct readings for adaptor used
  • 2.4 Use correct compression readings for adaptor
3 Perform tune up
  • 3.1 Determine firing pressures and adjust to specification, as applicable
  • 3.2 Perform air restriction, boost, back pressure and flow tests according to manufacturer recommendations using applicable test equipment
  • 3.3 Record readings and determine variances from specifications
  • 3.4 Determine density of exhaust smoke
  • 3.5 Adjust valve clearance and/or timing to specifications
  • 3.6 Adjust injection pump or injector timing to specification
  • 3.7 Adjust engine parameters using methods appropriate to technology of engine
  • 3.8 Determine if injector opening pressure is within specification and adjust, arrange replacement or repair if faulty
No information
No information
Replaces
State Code National Code Title Type
W5573 MEM18029B Tune diesel engines Unit of competency