Unit of competency Outline

Date retreived
22/07/2026 8:20 PM AWST

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Perform engine bottom-end overhaul

Perform engine bottom-end overhaul

Unit of competency
National Code
MEM27030
State Code
OAT08
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 dismantle, clean and assess parts, record and interpret measurements, and recondition components. It includes cylinder honing using hand held power tools, and replacement of bearings, piston rings and similar activities but not major machining, including crankshaft grinding, cylinder boring and tunnel boring.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 Dismantle, clean and assess parts
  • 2.1 Determine the reuse or replacement of crankshaft and piston assemblies based on the characteristics of surface finish and wear patterns
  • 2.2 Remove engine from plant, remove top-end components and dismantle block assembly according to manufacturer recommendations
  • 2.3 Check parts for abnormal wear or defects and identify components for reuse or replacement
  • 2.4 Select appropriate cleaning solution and procedure, clean and store ready for reassembly
  • 2.5 Rack or set out parts according to their original location in the engine
  • 2.6 Obtain and record measurements using appropriate measuring equipment
  • 2.7 Interpret readings regarding replacement or reuse and determine appropriate under/oversize of replacement parts
3 Recondition components
  • 3.1 Identify ridges, gaps, tapers, ovality and protrusions and take necessary corrective action
  • 3.2 Assemble components according to manufacturer specifications using appropriate tools and equipment
  • 3.3 Determine bearing clearances by calculation or direct measurement
No information
No information
Replaces
State Code National Code Title Type
W5578 MEM18033B Perform engine bottom-end overhaul Unit of competency