Heavy Diesel Fitter South East Queensland
On-site heavy diesel fitting for earthmoving equipment, civil plant and heavy machinery across South East Queensland. Servicing, fault finding and breakdown repairs that keep machines working and downtime short.
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On-Site Fitting For Earthmoving & Civil Plant
Objective Maintenance Solutions provides mobile heavy diesel fitting services across South East Queensland for earthmoving equipment, civil plant and heavy machinery. When a machine stops, the priority is getting it diagnosed and back to work without floating it off to a distant workshop. Our work is carried out on-site, at the yard or job, so productivity returns as quickly as the repair allows.
The day-to-day work covers on-site servicing, fault finding, breakdown repairs and preventative maintenance. Whether it's a roller that won't make power, an excavator throwing fault codes or a fleet due for scheduled servicing, the aim is the same: find the real cause, carry out the repair properly, and reduce the downtime that costs operators the most. Clear notes are handed back for your service records so the machine's history stays current.
OMS has built its experience across mining, power generation and heavy industry, where reliability and uptime are not negotiable. That background carries directly into earthmoving and civil work: the same disciplined approach to diagnostics, servicing and component condition applies whether the machine is a haul-road excavator or a council roller. The focus on this page is mobile plant and earthmoving: fixed plant, conveyors, pumps and crushers are covered in their own dedicated services.
Mobile Heavy Diesel Repairs & Maintenance
Most jobs fall somewhere between two ends of the same spectrum. At one end is the breakdown: a machine down on site, work stopped, and a need to find the fault and get it running again. We carry out breakdown repairs on-site, starting with proper fault finding and diagnostics rather than swapping parts and hoping. Reading live data and confirming the cause means the repair holds and the machine doesn't come straight back with the same problem.
At the other end is planned work: scheduled servicing and preventative maintenance that catch wear before it becomes a failure. Oil and filter changes, servicing intervals and condition checks keep a fleet predictable, which is almost always cheaper than reacting to breakdowns. Between those two extremes sits the bulk of the work: cooling system issues, hydraulic fault diagnosis, general mechanical repairs and component replacement, carried out as the machine needs them.
We also provide additional labour and mechanical support during shutdowns and major maintenance periods, when there's more work than a single crew can cover in the window available. Across all of it, the thread is the same: diagnose accurately, repair properly, and keep the machine in service.
Equipment We Work On
Excavators
Servicing, repairs and diagnostics for excavators of all sizes, from engine and cooling faults to hydraulic and driveline issues. Fault finding on-site, with repairs carried out where the machine sits.
Excavator Repairs →Wheel Loaders
Diagnosis and repair of wheel loader engines, transmissions, hydraulics and steering. Scheduled servicing and breakdown support to keep loaders moving material.
Wheel Loader Repairs →Dozers
Repairs and servicing for dozers, including engine performance, cooling, hydraulics and undercarriage-related faults. Diagnostics that pinpoint the cause before parts go on.
Dozer Repairs →Skid Steers & Bobcats
Servicing, fault finding and repairs for skid steers and bobcats, compact machines that still earn their keep and need to stay available on site.
Bobcat & Skid Steer Repairs →Civil Plant & Heavy Machinery
Rollers, articulated dump trucks, telehandlers and the supporting equipment that keeps a civil site running. Mobile servicing and repairs across mixed fleets, so one call covers more than one machine.
Earthmoving Equipment Repairs →Independent Support For Leading Brands
We work independently across the major earthmoving and plant brands, CAT, Komatsu, Hitachi, Kobelco, Volvo, John Deere, Kubota and Bobcat. The fundamentals of heavy diesel carry across makes, and diagnostic coverage for the common platforms means a machine doesn't have to go back to its dealer for routine servicing or most repairs.
OEM servicing is genuinely worth it on some machines: a unit under warranty, or one tied to a manufacturer support agreement. For everything else, independent support is usually faster and easier to arrange. Servicing a machine where it works, on a schedule that suits the job, is where independent fitting earns its place.
More Than Parts Replacement
Many of the faults that look like engine problems aren't caused by the engine at all. A machine down on power, running hot or throwing codes is often pointing at something further out: a cooling system that can't shed heat, hydraulic loads dragging the engine down, a failing sensor feeding bad data, or a supporting component quietly out of spec. Replacing the obvious part without understanding why it failed usually just buys time before the same fault returns.
The approach here is root-cause diagnosis. That means reading live data, checking how systems interact, and confirming what's actually driving the symptom before any parts go on. It takes a little longer up front, but it means you pay for the fix rather than a series of guesses, and the machine stays fixed.
Final Drive Rebuild
Related Services
Where We Work
OMS provides mobile heavy diesel fitting across South East Queensland, including Caloundra, Caloundra West, Baringa, Landsborough, Beerwah, Maroochydore, Nambour, Gympie and into Moreton Bay. Machines on civil sites, in yards and across mixed fleets are all covered. We come to where the equipment is working rather than asking you to bring it to us.
Common Questions
Do you provide mobile heavy diesel fitting services?
Yes. Objective Maintenance Solutions provides mobile heavy diesel fitting across South East Queensland, with servicing, fault finding and repairs carried out on-site at your yard or job.
What equipment do you service?
Earthmoving equipment, civil plant and heavy machinery: excavators, wheel loaders, dozers, skid steers and bobcats, rollers, articulated dump trucks, telehandlers and the supporting equipment around them.
Do you repair excavators and loaders?
Yes. Excavators and wheel loaders are core machines for us, covering engine, cooling, hydraulic and driveline faults as well as scheduled servicing. See our excavator and wheel loader repair pages for detail.
Do you provide breakdown support?
Yes. Breakdown repairs are a major part of the work: fault finding and diagnostics to identify the cause, then repairs on-site to get the machine back into service and reduce downtime.
Do you service equipment on-site?
Yes, in almost every case. Servicing, diagnostics and repairs are carried out where the machine is working. Only major rebuilds that need a workshop environment are handled off-site, and we coordinate that for you.
Machine or plant down? Call us anyway.
Most of our work is booked in, so we can't promise to be free. But if we're available, we'll come, and we'll tell you honestly straight away whether we can get there. If we can't, we'll say so, so you can call someone else.
Diesel Fitters Near You
What Our Customers Say
A selection of our Google reviews
Casey is a talented multifaceted tradesman with skills covering a wide range of engineering environment's from industrial maintenance, precision fitting, food and beverage, fabrication, and heavy diesel equipment/hydraulics. Whether it's projects, new installations, breakdowns, or preventative maintenance Casey and his team are reliable, and provide prompt, quality workmanship to reach your required outcomes in your required timeframes. Casey and his team consistently deliver work with excellent attention to detail, organisation, attitude, and on budget and on time. You won't regret engaging with him to get your engineering work done, and you'll probably wish you'd have met him sooner!
Fantastic onsite service! Casey handles urgent on-site problems quickly and professionally while maintaining excellent communication from start to finish. I would recommend OMS to any business looking for support from a skilled mechanical fitting service.
I employed OMS for some extra man power on a shutdown recently, Casey and the team showed up on time every day, fit in well with the crew and adapted their knowledge to the mechanical tasks that needed to be completed.
I've had a great experience with OMS. They are reliable, knowledgeable, and always provide high-quality workmanship. Their attention to detail and commitment to keeping equipment running efficiently is impressive. Communication is excellent, and they consistently deliver service in a timely and professional manner. It's clear Casey takes pride in their work and genuinely care about their customers. I would highly recommend them to anyone looking for dependable machinery maintenance and repair services
This is an amazing service. Casey is the all rounder of Mechanical Fitting. He's a can do guy with skills and easy to deal with. It was an absolute pleasure doing business with you Casey.
Casey was super easy to deal with. Sorted out the issue with our forklift quickly and knew exactly what he was doing. Fair pricing, great communication, and quality work. Would definitely use him again. Thanks Casey and team!
Heavy plant down in South East Queensland?
Trade qualified fitters with heavy diesel experience, providing on-site diagnostics, servicing and breakdown support for earthmoving equipment and heavy machinery across South East Queensland. Tell us what the machine is doing, and we'll work with you to minimise downtime
Or email Service@oms-au.com