Heavy Diesel Specialists deliver a broad range of mechanical services for all diesel powered machines big and small at our place or yours.

We operate a modern, fully equipped workshop to carry diesel repairs to ensure complete customer satisfaction. With a combined experience of over 50 years, the workshop team has the experience to complete your machine or truck repair and rebuilding requirements to the highest possible standard.

We specialise in heavy diesel engine service & repairs. We service in Rutherford, Windella, Maitland, Newcastle, Singleton, Muswellbrook & surrounding suburbs. 24/7 Breakdown Service.

Call us any time – we are available 24/7.

 Diesel Repair & Service across all Industries

HDS have been undertaking repairs and coordinating service schedules for heavy diesel vehicles, plant & machinery for over a decade.

We have an extensive list of clients who operate trucks and light commercial vehicles including Australia’s fastest growing tanker transport business, several coach operators and numerous mid-size construction companies.

Transport Fleet Diesel Repairs


We have been undertaking repairs and coordinating service schedules for commercial and road transport vehicles for over a decade.

Mining Plant Diesel Repairs


HDS have worked on almost every Caterpillar, Komatsu, Hitachi and Liebherr machine that’s being used in the Australian coal sector.

Agricultural & Civil Diesel Repairs

Agriculture / Civil

Whether its a tractor, header, pump or grader, crane or bobcat, HDS services all diesel-powered agricultural and civil equipment.

Spare Parts

Spare Parts

HDS offers the choice of genuine spare parts or quality replacements, and oils and lubricants to manufacturer specifications.

Accredited HVAIS Inspection Station

Heavy Vehicle Authorised Inspection StationHeavy Diesel Specialists is an accredited Heavy Vehicle Authorised Inspection Station (HVAIS). We are authorised by NSW RMS to perform safety, identity and design checks of heavy vehicles (4.5t and over).


Servicing Vehicles within 200k of our Hunter Valley workshop

Based in Maitland, Heavy Diesel Specialists works across the entire Newcastle, Central Coast, Hunter Valley, New England and mid North Coast regions.

We’ve forged an excellent reputation for our road-side breakdown service where we’ll attend your vehicle any time of the day or night, 365 days a year anywhere in the greater Sydney area, Hunter Valley, New England, Port Stephens or Manning Valley. We go wherever you need us, whenever you call.


Heavy Diesel Specialists : Clients

HDS looks after clients in the the transport, mining, civil, construction, agricultural sectors as below. We also service and repair private diesel passenger vehicles or farm equipment. Call us.