A complete range of diesel mechanic and heavy vehicle repair services, delivered from our Greenwood workshop to fleets across Western Australia.
Every service we perform is backed by qualified tradespeople, quality parts, and a commitment to getting your vehicles back on the road safely and efficiently.
From minor repairs to full engine overhauls, we service all major diesel engine brands — Cummins, Detroit Diesel, Paccar, CAT, Hino, Isuzu, and more. Our workshop is equipped for precision reconditioning and performance restoration.
Scheduled maintenance and safety inspections for prime movers, rigid trucks, B-doubles, road trains, and trailers. We follow manufacturer service schedules and WA regulatory requirements.
Customised fleet servicing schedules designed for logistics companies, bus operators, councils, and construction firms. We work around your operational calendar to minimise downtime and maximise vehicle availability.
Advanced computer-based diagnostic scanning for modern diesel engines, ECU programming, emissions system troubleshooting, and performance tuning. We invest in the latest diagnostic platforms to cover all major makes.
Heavy vehicle brake systems, air-brake servicing, suspension repairs, and steering component replacement. Safety-critical systems serviced by qualified heavy vehicle mechanics.
Diesel mechanical services for excavators, wheel loaders, dozers, graders, and other mining/construction plant. We service on-site or in our workshop depending on equipment size and location.
A transparent, efficient workflow designed to get your vehicles repaired right — the first time.
Contact us to schedule your service or describe the issue — we will arrange a suitable time.
Our mechanics inspect and diagnose the fault using hands-on expertise and electronic diagnostics.
We provide a detailed written quote with full transparency on parts, labour, and timeframe.
Qualified diesel mechanics complete the work to specification, using quality parts and procedures.
Final quality check, road test where applicable, and handover — your vehicle is back on the road.
"Southern Diesel rebuilt the engine on our Volvo FH16 and it runs better than when we bought it. Professional, communicative, and they finished ahead of schedule. Cannot ask for more."
"They set up a preventive maintenance plan for our 12-truck fleet and our breakdown rate dropped significantly in the first six months. Well worth the investment."
"Great diagnostic work on a tricky DPF issue that two other workshops could not figure out. Southern Diesel nailed it first time. They are our permanent workshop now."
Get in touch with our team to discuss your repair, servicing, or fleet maintenance requirements. We respond to all enquiries within one business day.