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Truck Diesel Mechanics

Keep Your Fleet Moving.

From single owner-driver prime movers to 20-truck civil and freight fleets. We deliver honest diagnostics, scheduled logbook servicing, Certificates of Inspection (COI) for trucks and heavy trailers, clutch and gearbox rebuilds, and 24/7 roadside breakdown response across Brisbane, Ipswich, and South East Queensland.

Rigid to Road Train
All Rig Capacities
Darra, QLD
Convenient Highway Off-Ramp
24/7 Rapid
SEQ Breakdown Line
Direct To Fitter

Book A Bay Or Mobile Truck Ute

Truck stuck on the road right now?

Lachy (Director)

0475 191 818

Built For Real Trucking Businesses

No Corporate Red Tape. Just Honest Spanner Work.

Owner-Drivers & Subbies

Your truck is your sole livelihood. If it's sitting parked at a dealership waiting two weeks for a slot, you aren't earning. We offer direct communication with the mechanic, fast turnaround times, and fair quotes with zero inflated markup.

Tippers, Quarries & Civils

Heavy-duty body repairs, PTO pumps, blown hydraulic tipping rams and chassis cracks. We know how rough civil site work is on gear and we fix it to stay fixed in the dirt.

Logistics & Delivery Fleets

Running 3 to 25 rigid or semi-trailers? We set up scheduled preventative maintenance, logbook servicing, brake relines, and after-hours repairs so your transport contracts never miss delivery windows.

Complete Truck Mechanical Capability

Everything Your Rig Needs Under One Roof

Whether you pull into our Darra workshop or flag our service ute down on the side of the highway, here is what our qualified diesel fitters take care of daily.

Scheduled Logbook & Fleet Maintenance

Comprehensive A, B, and C service schedules for prime movers, rigid trucks, and trailers. We change oils, inspect drivelines, grease kingpins, check hub seals, and record full audit reports that protect your manufacturer warranty.

Clutches, Gearboxes & Differentials

Heavy clutches take immense abuse under load. We handle clutch adjustments, heavy pressure plate swaps, flywheel grinding, and full rebuilds on Eaton Fuller Roadranger, Allison automatics, and European automated manuals.

Engine Diagnostics & In-Frame Overhauls

When an engine drops a cylinder or blows oil, you need precise diagnostic scan tools to avoid guessing. We perform in-frame and out-of-frame rebuilds on Cummins (ISX, X15), Detroit (DD15, Series 60), CAT, Mack, and Isuzu diesels.

Air Brakes, ABS & Heavy Suspension

Air leaks and worn s-cams will fail an inspection and risk driver safety on the range. We repair brake boosters, replace drum shoes and disc pads, trace stubborn pneumatic air leaks, and rebush air-bag or leaf spring suspensions.

Auto Electrical & Cab Air Con

Driving a truck in Queensland without cold A/C is unbearable. Our qualified auto electrical specialists fix cab air conditioning compressors, condenser leaks, and trace broken CAN-bus wiring harnesses, starters, and alternators.

Truck Body Fabrication & Repairs

Mobile boilermaking, chassis crack repairs, tipper body work and body modifications, done on site or in our Darra workshop. We fix it properly so it stays fixed.

In Our Darra Workshop Or Right On The Highway

Major planned overhauls belong in a clean, undercover workshop. Unexpected breakdowns get sorted wherever your truck pulled over.

Darra, Queensland

Darra Truck Workshop

Located with straightforward heavy vehicle access off the main transport routes in Darra. High-clearance bays designed for semi-trailers, B-doubles, and rigid trucks.

Brisbane • Ipswich • SEQ

On-Site Roadside Truck Response

When a prime mover derates into limp mode on the highway or blows an air line at a logistics depot, calling a float truck costs an arm and a leg. We bring the workshop to your steer tyre.

All Makes & Drivelines

Truck Badges We Service Daily

American heavy iron, Japanese delivery cab-overs, or European prime movers. We carry the software and filter stock for all of them.

KENWORTH
T909, K200, T610
MACK
Super-Liner, Trident
ISUZU
Giga, FX, FY Series
WESTERN STAR
4800, 4900, 5700
VOLVO
FH16, FM Series
SCANIA
V8, R & G Series
HINO
500 & 700 Series
FUSO
Shogun & Fighter
FREIGHTLINER
Cascadia & Coronado
CUMMINS
ISX, X15, Signature
DETROIT
DD15 & Series 60
EATON / ALLISON
Roadranger & Autos
How We Work

Simple, No-Nonsense Service

1

Direct Contact With The Owner

When you call us or request a callback, you speak directly with Lachy or Jordan. We get the make, model, problem symptoms, and location so our fitters roll up prepared.

2

Upfront Assessment & Quote

We plug in diagnostic tools or run physical checks, explain what failed, and give you a transparent quote before turning big bolts. No surprise parts or padded workshop fees.

3

Fast Fix & Handover

Repairs are carried out by trade-qualified diesel mechanics and tested under real operating temperatures. Your rig is handed back roadworthy and ready to generate revenue.

Request A Truck Service Or Breakdown Quote

Let us know what your truck needs and whether you want to drop it at our Darra workshop or need a mobile ute sent out.

⚡ Direct reply from Lachy (Director) or Jordan (Manager).

Real Feedback From Truck Operators

Trusted By South East Queensland Drivers

5.0 Star Heavy Vehicle Repairs
Rated 5 out of 5
Rated 5 out of 5

“Couldn’t recommend Top Notch Diesel enough! They are always professional, reliable and incredibly easy to deal with. Communication is great from start to finish, and they take the time to explain everything properly so you know exactly what’s being done.

It’s clear they take pride in their work and genuinely care about providing a quality service. Nothing ever seems like too much trouble, and they are always friendly, honest and professional.

If you’re looking for a diesel fitting business you can trust to do the job properly, I would highly recommend Top Notch Diesel!”

Jasmin Carlile

Rated 5 out of 5

“Quality service from the team. Ran our fleet of scrapers in Central Queensland mining flawlessly. Attention to detail and in depth machine reports and maintenance enabled the smooth running of these machines. Always happy to go the extra mile to get the job done right.”

Tim Foster

Got Questions?

Truck Repair FAQs

No, it will not. We strictly adhere to manufacturer service schedules, use OEM or warranty-approved fluids and filters, and stamp your logbooks. You maintain full warranty protection while paying honest trade rates instead of dealership premiums.

Yes. We understand your rigs are scheduled on routes Monday through Friday. We regularly coordinate fleet servicing on Friday afternoons, Saturdays, or scheduled evenings to ensure your trucks are ready for Monday morning shifts.

Our workshop is conveniently located in Darra, QLD, right near the major logistics transport corridors of the Ipswich Motorway and Centenary Highway. We have wide street access, high-clearance bays, and room for heavy combinations.

We operate 24 hours a day, 7 days a week. Response time depends on traffic and your exact location within our ~40km+ radius across Brisbane, Ipswich, or the Gold Coast, but our service utes are always prepped to dispatch immediately for roadside emergencies.

Can We Fix It? Yes We Can!

From a blown steer-axle air hose to a full Cummins in-frame rebuild. Call Lachy or Jordan directly for honest rates and reliable truck mechanic support.