Job Description
In this role, you will make an impact in the following ways:
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Perform advanced diagnostics, repairs, overhauls, and rebuilds on Cummins High Horsepower engines in a field-service environment with minimal supervision.
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Support Rio Tinto's mining operations by ensuring maximum fleet availability, reliability, and operational safety.
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Carry out scheduled and unscheduled preventative maintenance, following Cummins and OEM procedures.
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Interpret complex engine system interactions—including fuel systems, electronic controls, cooling,
exhaust/aftertreatment,
and driveline—to accurately identify and resolve root causes.
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Provide onsite customer support, manage expectations, and communicate technical outcomes clearly and professionally.
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Coach, mentor, and support junior technicians and apprentices, including reviewing repair plans, parts interpretation, and workflow accuracy.
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Complete all service documentation, warranty claims, technical notes, and diagnostic reports within Cummins systems.
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Identify potential sales or service opportunities, such as component upgrades, parts requirements, or preventative maintenance improvements.
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Maintain company tooling, equipment, and service vehicle in safe, clean operating condition.
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Comply with all Cummins and Rio Tinto Health, Safety & Environmental (HSE) requirements, participating actively in hazard reporting, Take 5s, and continuous safety improvement initiatives.
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Escalate complex technical issues through defined Cummins technical escalation channels to ensure timely and accurate resolution.
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To be successful in this role you will need the following:
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Significant field service experience with expert‐level technical capability in Cummins High Horsepower (HHP) engines (QSK19, QSK38, QSK50, QSK60).
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Proven experience working on large mining fleets, including:
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Komatsu 830E haul trucks
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Komatsu WA**** loaders
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Komatsu PC550 excavators
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Hitachi EX****** excavators
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Ability to interpret and use Cummins INSITE, electronic diagnostic tools, technical publications, and troubleshooting workflows.
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Strong problem‐solving and decision‐making skills when working with high‐complexity systems and remote field conditions.
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Excellent communication skills with a strong customer‐service focus.
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Vocational trade qualification (Cert III Heavy Diesel or equivalent); Apprentice‐trained Engine Technician preferred.
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Valid driver's license and ability to meet site access, medical, and compliance requirements.
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Safety‐first mindset with a strong commitment to following processes, assessing risk, and contributing to a zero‐incident workplace.
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Rio Tinto Hope Downs 4
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8/6 Roster Day shift Only
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HHP Experience Required
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Field Service Experience essential
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Looking after fleet Komatsu 830Es, Komatsu WA****, Komatsu PC550, Hitachi EX******
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Job Service
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Organization Cummins Inc.
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Role Category In office with Flexibility
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Job Type Technician
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ReqID *******
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Relocation Package No
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100% On-Site No

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