Heavy Diesel Mechanic Services: Gympie & Sunshine Coast
For professional heavy diesel mechanic services across Gympie and the Sunshine Coast call All Fixed Diesels. We provide genuine 24/7 off-site and on-site support for heavy machinery, trucks, prime movers, and agriculture machines.
Please note: We are heavy industry specialists and do not service light vehicles.
As a locally owned and operated business in South-East Queensland, we offer flexible solutions tailored to the transport, civil, and farming sectors. Whether you need a logbook service in the Sunshine Coast or an emergency repair in the Gympie hinterland, our team has the reach and the resources to keep you and or your fleet moving.
24/7 Diesel Maintenance, Repairs & Breakdown Services
Scheduled Fleet Maintenance Services
Workshop & On-Site Field Service Units Available
High-Quality Workmanship Guaranteed
Specialists in Earthmoving, Transport, Agriculture, Mining, Marine & More
Off-site & On-site Diesel Mechanic Services
Mobile & Workshop Capabilities
We operate a “hybrid” service model to give you the best of both worlds:
- Fully Equipped Workshops: For major overhauls, engine rebuilds, and complex fabrication work, we have two dedicated heavy vehicle facilities:
- Sunshine Coast: Located in the Sunshine Coast Industrial Park, Caloundra West (near the racecourse and Bruce Highway).
- Gympie: Located on the Wide Bay Highway at Bells Bridge (with B-Double access). Both workshops are equipped with heavy hoists, dealer-level diagnostic software (Cummins, Detroit, CAT, Volvo), and the specialised tooling required for heavy haulage repairs.
- On-Site Mobile Mechanics: We understand that you can’t always float a machine to town. Our mobile heavy diesel mechanic units are essentially “workshops on wheels.” We travel to your quarry, construction site, or farm to perform:
- Scheduled fleet maintenance and logbook servicing.
- Hydraulic repairs on earthmoving plant (excavators, graders, dozers).
- Diagnostic scans and electrical fault finding.
- Agricultural machinery repairs during critical harvest windows.
Off-site & On-site Diesel Mechanic Services
24/7 Emergency Truck Breakdown Service
Mechanical failures don’t stick to business hours. We provide a rapid-response 24/7 emergency breakdown service for trucks and heavy machinery across the Sunshine Coast, Gympie, and Brisbane North.
Whether you are stuck on the Bruce Highway or broken down on a rural job site, our technicians are ready to deploy. We handle common roadside issues including:
- Air brake system failures.
- Hydraulic hose bursts and leaks.
- Cooling system faults.
- Driveline and suspension issues.
- Roadside diagnostics to clear fault codes and get you limp-mode free.
Off-site & On-site Diesel Mechanic Services
Heavy Vehicle Compliance (Approved Inspection Station)
Compliance is critical for safety and avoiding heavy fines. All Fixed Diesels is an accredited Approved Inspection Station (AIS), authorised to certify your fleet’s roadworthiness.
- COI (Certificate of Inspection): We conduct mandatory periodic inspections for heavy vehicles (>4.5t) and trailers. We can perform these inspections at our workshop to ensure your registration remains valid.
- HVRAS Accreditation: If you are registering a heavy vehicle or trailer for the first time in Queensland, you need HVRAS. Our accredited officers measure and inspect dimensions, weights, and identifiers to ensure the vehicle matches TMR standards. This is essential for new fleet additions or interstate transfers.
Off-site & On-site Diesel Mechanic Services
Authorised Muscat Trailer Repairer
We are the region’s authorised representative for Muscat Trailers. This partnership allows us to provide factory-standard care for your specialised haulage equipment.
Because we are authorised, we can carry out repairs and maintenance without voiding your manufacturer warranty. Our team is experienced in the specific hydraulic and structural systems of:
- Live bottom and live floor trailers.
- Walking floor trailers.
- Side tippers and semi-tippers.
- B-Doubles and Asterions.
- General welding and fabrication repairs for trailer chassis and bins.
Reliable Diesel Maintenance Services and Truck Breakdown Services
Off-site & On-site Heavy Diesel Services
From commercial vegetation management and broadacre farming to heavy road transport, earthmoving, and mining- All Fixed Diesels has the experience to handle it all.
When a problem arises, you need a solution, not an excuse. Our heavy diesel mechanic team can repair your machinery promptly on-site across Gympie and the Sunshine Coast. Alternatively, for major overhauls and heavy lifting, we can arrange for you to bring your equipment to our purpose-built workshop.
We provide a friendly, no-nonsense professional service. Whether it’s a basic repair or a 24/7 emergency breakdown, our goal is to minimise your downtime and get you back to work.
Our heavy diesel maintenance and repair capabilities include:
- Heavy Earthmoving & Haulage: Comprehensive diagnostics and repairs for excavators, graders, loaders, and prime movers.
- Truck Brake Specialists: Complete brake system services including brake shoe relining, riveting, and lining installation/removal.
- Agriculture & Farming: Diesel tractor repairs, harvesters, and irrigation pumps.
- Fixed Plant & Quarrying: Maintenance for crushers, screens, and conveyor systems.
- Specialised Vegetation Equipment: Servicing for commercial wood chippers, stump grinders, and mini loaders.
- Safety & Compliance: Safety certificate pre-inspections, defect rectifications, and COI/HVRAS.
- 24/7 Emergency Support: A fully equipped mobile breakdown service available round-the-clock.
Frequently Asked Questions
We are strictly heavy diesel mechanics. Our tooling and diagnostic equipment are dedicated to heavy transport (trucks, prime movers), earthmoving plant (excavators, loaders), and agricultural machinery. Please note: We do not service light vehicles, passenger cars, or standard utes.
We offer both. We operate a fleet of mobile service units that travel from Brisbane to the Wide Bay for on-site repairs. For major overhauls, engine rebuilds, or heavy inspections, we have two fully equipped workshops: one in Bells Creek (Sunshine Coast) and one in Bells Bridge (Gympie). Both facilities are designed for easy B-Double access.
Yes. We understand that the transport and civil industries operate round-the-clock. We offer genuine 24/7 emergency roadside assistance for heavy vehicles. Whether you have an air brake failure on the highway or a hydraulic hose burst on a night shift, call us on (07) 5630 1930 (Coast) or (07) 5408 2711 (Gympie).
Yes, All Fixed Diesels is an accredited Approved Inspection Station (AIS). We can perform your mandatory Certificate of Inspection (COI) for heavy vehicles. We are also accredited for HVRAS, allowing us to measure and inspect heavy vehicles and trailers for first-time registration in Queensland.
No. We are the region’s authorised Muscat Trailer Repairer. We can carry out all servicing, hydraulic repairs, and structural maintenance on Muscat live floors, walking floors, and side tippers without voiding your manufacturer warranty.
Absolutely. We support the farming sector across the Gympie and Sunshine Coast hinterlands. We repair and service tractors, harvesters, irrigation pumps, and stationary engines. We understand the urgency of harvest windows and prioritise rapid turnaround times for agricultural breakdowns.