Your Go-to Company for Diesel Machinery Maintenance, Repair, and Diagnostics


Repair, Diagnostics

Queensland’s Most Reliable Diesel Fitters

Diesel Fitters

Lyalls Diesel provides Queensland’s most reliable diesel technicians for machine diagnostics, repair, and maintenance in the mining, agricultural, and construction industries.

Whatever the mechanical issue may be, our team of diesel fitting experts and range of advanced technical tools will deliver quality solutions that will get your machinery up and running in no time. We repair and service trucks, excavators, loaders, backhoes, dozers, graders, forklifts, cranes, tractors, and a host of other machinery and equipment.

From scheduled servicing and on-site breakdown repairs to heavy-duty components replacements and diagnostics, we do it all.

Looking for a mobile mechanic near you? Look no further than Lyalls Diesel.

Servicing diesel engine

What We Do


Machine Diagnostics, Maintenance, and Servicing

Machine Diagnostics, Maintenance, and Servicing

Our heavy-duty mechanical service team is on hand to help you reduce operational downtime and keep your projects going.

Mobile Servicing

Mobile Servicing

Our mobile diesel mechanic is just a call away. When you experience those unexpected breakdowns or need onsite diesel repair, contact our Lyalls Diesel mobile mechanic.

Vehicle Servicing

Vehicle Servicing

Lyalls Diesel provides the best diesel vehicle services in all areas of Queensland. Our vehicle service team is experienced in handling all types of diesel machinery.

Site Compliance

Site Compliance

We collaborate with project managers to help them stay compliant with site standards and industry requirements.

Site Inductions

Site Inductions

Our onsite diesel induction services are on hand to help you keep your team abreast of service best practices and workplace safety protocols. We can also help you formally introduce new workers to your company and its service procedures.

Get Diesel Fitting Services to Your Next Queensland Project

Get in


Lyall's Diesel is…

Lyall's Diesel

Colorado ute

Fully Equipped

Our diesel fitters are fully equipped with the skills, experience, and tools needed to meet your diagnostics, repair, and maintenance needs on your next Queensland project.
Lyall’s Diesel team


You can trust that whatever service our team provides is the best you can find anywhere. Customer satisfaction is our top priority. For this reason, we constantly go above and beyond to make sure you are satisfied with the job done.

Colorado ute and excavator

Always Available

Our professional diesel fitters are always available for short and long-term jobs offered at the best rates in the market. To keep your project running without any downtime, we offer 24/7 machinery breakdown services and more.

Contact Us

Contact Us

Our phone lines and email are always open 24/7 to take your calls and messages. Expect a quick response to your request for a quote and detailed answers to your queries.

Your Local Mechanical Service Provider


We are available and ready to provide 24/7 emergency assistance on site or in our workshop. If you don’t want your operations to stop when your equipment break down, call Lyalls Diesel for fast and efficient repairs. Our mobile mechanics can come to you whenever and wherever you need us. We’ll treat your machinery and equipment as if they were ours and deliver the highest quality service.

We service mining, construction, and agricultural equipment across:

  • Central Queensland
  • Central Highlands
  • Coalfields

  • Whitsundays
  • Mackay
  • Isaac

Your Local Mobile Heavy-duty Mechanic

Heavy-duty Mechanic

Our team of professional diesel fitters offer heavy-duty vehicle servicing onsite or in the workshop, including machinery breakdown repairs and scheduled maintenance for earthmoving machinery, fixed plant, farm equipment, and more.

If you cannot get to us, we’ll bring our services to you. We provide our diesel fitting and mechanical services across the Central Highlands, Coalfields, Central Queensland, Mackay, Issac, and the Whitsundays. Whether on site or in our workshop, we pride ourselves on delivering quality workmanship every time. That’s why Lyalls Diesel is Queensland’s top mobile heavy diesel mechanic.

Landcruiser diesel engine repair and servicing

Get in Touch

Get in Touch

Get a free quote by filling out the online form below or speak with a member of our team now by calling us: