Mechanical · Skilled
Mobile Plant HD Fitter
Maintains heavy mobile mining fleets, combining mechanical, hydraulic and diagnostic work in workshops and field environments.
Indicative 2026 pay$140k–$210kAnnual gross, generally before super
Common roster contextCommonly 2/1, 8/6, 7/7 or 2/2, depending on owner, contractor and fleet.
Work environmentsMine workshops · Open-pit field service · Fleet maintenance bays · OEM support
Role at a glance
What this role actually does.
Maintains heavy mobile mining fleets, combining mechanical, hydraulic and diagnostic work in workshops and field environments. The precise scope changes with the employer, asset, jurisdiction and written authorities.
The work
Core duties
- 01
Diagnose machine faults
- 02
Complete servicing and planned maintenance
- 03
Repair powertrain and hydraulic systems
- 04
Respond to field breakdowns
- 05
Inspect safety-critical systems
- 06
Document defects and component history
The assets
Equipment and systems
- 01
Haul trucks
- 02
Loaders and dozers
- 03
Graders
- 04
Excavators
- 05
Hydraulic systems
- 06
Electronic diagnostic tools
Before mobilisation
Typical foundations
- 01
Recognised heavy vehicle/mobile plant mechanical trade
- 02
OEM and site competency relevant to fleet
- 03
Driver licence and site access requirements
- 04
Isolation and lifting competence for assigned tasks
Prove capability
Evidence employers can verify
- 01
Machine make, model and hours
- 02
Fault codes and diagnostic method
- 03
Component or system repaired
- 04
Testing, return-to-service and repeat-failure result
Entry pathway
A credible way into the role.
- 01
Complete a heavy diesel or mobile plant trade
- 02
Build workshop discipline
- 03
Gain exposure to mining fleets
- 04
Develop OEM diagnostics and field breakdown capability
Earning context
What tends to move pay
- 01
Fleet and OEM expertise
- 02
Field service and breakdown coverage
- 03
Roster and remoteness
- 04
Permanent, contractor or OEM employment
Before accepting
Questions to ask about the offer
- 01
Is the quoted figure base salary, total cash or a package including super?
- 02
Which roster, shift length and point of hire does the offer assume?
- 03
How are overtime, nights, public holidays, allowances, bonus and travel treated?
Progression
Possible next moves.
Progression depends on demonstrated competence, vacancies, performance, qualifications and any appointment requirements. It is not automatic.
Keep exploring
Related role profiles.
Editorial note
Salary bands are broad 2026 Australian mining market guides, not promised rates. Role requirements summarise common practice and do not replace legislation, regulator guidance, an employment agreement, site procedures or a written appointment. Last reviewed 17 September 2026.