Application
This unit describes the performance outcomes required to inspect and service hydrostatic transmissions and associated components. It involves preparing for the task, inspecting the transmission and components, reporting the inspection findings, servicing and adjusting the transmission, and completing workplace processes and documentation.
It applies to those working in the automotive service and repair industry. The hydrostatic transmissions include those of agricultural machinery, mobile plant machinery or outdoor power equipment.
No licensing, legislative, regulatory or certification requirements apply to this unit at the time of publication.
Elements and Performance Criteria
Elements Elements describe the essential outcomes. | Performance Criteria Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold and italicised text is used, further information is detailed in the range of conditions section. |
1. Prepare to inspect and service hydrostatic transmission | 1.1 Job requirements are determined from workplace instructions 1.2 Servicing information is sourced and interpreted 1.3 Hazards associated with the work are identified and risks are managed 1.4 Tools, equipment and materials are selected and checked for serviceability |
2. Inspect hydrostatic transmission | 2.1 Inspection is carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements 2.2 Inspection results are compared with manufacturer specifications 2.3 Inspection findings are reported according to workplace procedures, including recommendations for necessary repairs or adjustments |
3. Service hydrostatic transmission | 3.1 Service and adjustments are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements, and without causing damage to components or systems 3.2 Post-service testing is carried out according to workplace procedures |
4. Complete work processes | 4.1 Final inspection is made to ensure work is to workplace expectations and machinery is presented ready for use 4.2 Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected 4.3 Tools and equipment are checked and stored according to workplace procedures 4.4 Workplace documentation is processed according to workplace procedures |
Evidence of Performance
Before competency can be determined, individuals must demonstrate they can perform the following according to the standards defined in this unit’s elements, performance criteria, range of conditions and foundation skills:
inspect and service the hydrostatic transmissions of two different machinery.
Evidence of Knowledge
Individuals must be able to demonstrate knowledge of:
work health and safety (WHS) and occupational health and safety (OHS) requirements relating to inspecting and servicing hydrostatic transmissions, including procedures for:
working with high oil pressures
working with stored hydraulic accumulator pressures
isolating and stabilising machinery
environmental requirements, including procedures for trapping, storing and disposing of oil released from hydrostatic transmissions
identification, function and basic operation of hydrostatic transmission and components, including:
charge pump
main pump
drive motor
filters
hydraulic lines
heat exchanger
reservoir
control valve
types and applications of hydraulic oil
inspection procedures for hydrostatic transmissions, including:
hydraulic oil sampling
oil leaks
pressure checks as required
service and adjustment procedures for hydrostatic transmissions, including
adjusting or replenishing oil level as required
replacing filters as required
post-service testing procedures for hydrostatic transmissions.
Assessment Conditions
Assessors must satisfy NVR/AQTF assessor requirements.
Competency is to be assessed in the workplace or a simulated environment that accurately reflects performance in a real workplace setting.
Assessment must include direct observation of tasks.
Where assessment of competency includes third-party evidence, individuals must provide evidence that links them to the hydrostatic transmissions that they have worked on, e.g. repair orders.
Assessors must verify performance evidence through questioning on skills and knowledge to ensure correct interpretation and application.
The following resources must be made available:
mechanical repair workplace or simulated workplace
workplace instructions
manufacturer hydrostatic transmission specifications
two different machinery with hydrostatic transmissions requiring servicing
tools, equipment and materials appropriate for inspecting and servicing hydrostatic transmissions.
Foundation Skills
This section describes those language, literacy, numeracy and employment skills that are essential to performance and are not explicit in the performance criteria.
Skills | Description |
Learning skills to: | locate appropriate sources of information efficiently. |
Reading skills to: | interpret information from manufacturer and workshop literature when seeking service procedures and specifications relating to hydrostatic transmissions. |
Writing skills to: | legibly and accurately fill out workplace documentation when reporting inspection findings, making recommendations, and recording parts and material used. |
Oral communication skills to: | clarify instructions report inspection findings and make repair recommendations. |
Numeracy skills to: | use mathematical operations, including addition and subtraction, to determine liquid quantities interpret pressure gauges and units of pressure. |
Problem solving skills to: | refer problems outside area of responsibility to appropriate person. |
Range Statement
This section specifies 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. Bold italicised wording, if used in the performance criteria, is detailed below.
Safety and environmental requirements must include: | work health and safety (WHS) and occupational health and safety (OHS) requirements, including procedures for: working with high oil pressures working with stored hydraulic accumulator pressures isolating and stabilising machinery environmental requirements, including procedures for trapping, storing and disposing of oil released from hydrostatic transmissions. |
Sectors
Technical - Transmission
Competency Field
Mechanical Miscellaneous