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Evidence Guide: MEM27005 - Tune diesel engines

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

MEM27005 - Tune diesel engines

What evidence can you provide to prove your understanding of each of the following citeria?

Perform tune up

  1. Determine firing pressures and adjust to specification, as applicable
  2. Perform air restriction, boost, back pressure and flow tests according to manufacturer recommendations using applicable test equipment
  3. Record readings and determine variances from specifications
  4. Determine density of exhaust smoke
  5. Adjust valve clearance and/or timing to specifications
  6. Adjust injection pump or injector timing to specification
  7. Adjust engine parameters using methods appropriate to technology of engine
  8. Determine if injector opening pressure is within specification and adjust, arrange replacement or repair if faulty
Determine firing pressures and adjust to specification, as applicable

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Perform air restriction, boost, back pressure and flow tests according to manufacturer recommendations using applicable test equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Record readings and determine variances from specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine density of exhaust smoke

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Adjust valve clearance and/or timing to specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Adjust injection pump or injector timing to specification

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Adjust engine parameters using methods appropriate to technology of engine

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine if injector opening pressure is within specification and adjust, arrange replacement or repair if faulty

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine job requirements

  1. Follow standard operating procedures (SOPs)
Follow standard operating procedures (SOPs)

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Comply with work health and safety (WHS) requirements at all times

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Use appropriate personal protective equipment (PPE) in accordance with SOPs

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify job requirements from specifications, drawings, job sheets or work instructions

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Compression test engine

  1. Remove injectors and isolate fuel system for each cylinder
Remove injectors and isolate fuel system for each cylinder

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select and fit appropriate adaptors

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Obtain, interpret, record and correct readings for adaptor used

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Use correct compression readings for adaptor

  1. Determine firing pressures and adjust to specification, as applicable
Determine firing pressures and adjust to specification, as applicable

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Perform air restriction, boost, back pressure and flow tests according to manufacturer recommendations using applicable test equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Record readings and determine variances from specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine density of exhaust smoke

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Adjust valve clearance and/or timing to specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Adjust injection pump or injector timing to specification

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Adjust engine parameters using methods appropriate to technology of engine

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine if injector opening pressure is within specification and adjust, arrange replacement or repair if faulty

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Required Skills and Knowledge
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