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Diagnose and repair heavy vehicle hydraulic and air over hydraulic braking systems

KHU-AUT-0155

Australian Equivalent
AURHTB002
Elements
4
Learning Outcomes
17

This unit describes the performance outcomes required to diagnose and repair faults in the hydraulic and air over hydraulic braking systems of heavy vehicles. It involves preparing for the task, selecting the correct diagnostic procedure, carrying out the diagnosis and the repair, performing post-repair testing, and completing workplace processes and documentation. It applies to those working in the automotive service and repair industry. The braking systems include those in agricultural machinery, heavy commercial vehicles or mobile plant machinery. The unit does not apply to hydraulic pressure brakes in agricultural machinery or mobile plant machinery. No licensing, legislative, regulatory or certification requirements apply to this unit at the time of publication.

Elements & Learning Outcomes

4
E1Prepare to diagnose and repair heavy vehicle hydraulic and air over hydraulic braking system
0155.E1.O1Job requirements are determined according to workplace instructions
0155.E1.O2Diagnostic information is sourced and interpreted
0155.E1.O3Diagnostic options are analysed and those most appropriate to the circumstances are selected
0155.E1.O4Hazards associated with the work are identified and risks are managed
0155.E1.O5Diagnostic tools and equipment are selected and checked for serviceability
E2Diagnose braking system
0155.E2.O1Diagnostic tests are carried out according to manufacturer specifications, workplace procedures and safety and environmental requirements
0155.E2.O2Faults are identified from diagnostic test results and causes of faults are determined
0155.E2.O3Diagnosis findings, including recommendations for necessary repairs or adjustments, are reported according to workplace procedures
E3Repair braking system
0155.E3.O1Repair information is sourced and interpreted
0155.E3.O2Repair options are analysed and those most appropriate to the circumstances are selected
0155.E3.O3Repair tools, equipment and materials are selected and checked according to manufacturer procedures
0155.E3.O4Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements, and without causing damage to components or systems
0155.E3.O5Post-repair testing is carried out according to workplace procedures to confirm fault rectification, and any further problems detected as having been introduced during the repair process are rectified
E4Complete work processes
0155.E4.O1Final inspection is made to ensure work is to workplace expectations and vehicle is presented ready for use
0155.E4.O2Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected
0155.E4.O3Tools and equipment are checked and stored according to workplace procedures
0155.E4.O4Workplace documentation is processed according to workplace procedures
SEAL — South East Asia Learning Identifier & Skills Portal · Prepared for MLVT Executive approval and TVET institute review · Derived from the Australian National Training Register (training.gov.au, CC-BY) and aligned to the Cambodian Qualifications Framework and DSC Standard Training Packages · Delivered via Gibble SMS · July 2026