Built to keep you moving.
Responsive field service, workshop repairs, precision line boring and heavy fabrication across Newcastle, the Central Coast and the Upper and Lower Hunter. One experienced team, ready for the hard jobs.
What we do.
Heavy vehicle & plant repair
Diagnostics, servicing, maintenance and component overhauls for heavy vehicles and machinery, in our workshop or at your site.
02Welding & fabrication
Complex equipment repairs, modifications and custom-built components made to fit, perform and stand up to demanding work.
03Line boring
Precision bore restoration completed in our equipped workshop where practical, with mobile line boring available for equipment that cannot be transported.
04Field service & support
Responsive site attendance backed by skilled trades, purpose-built service vehicles and the practical experience to solve problems fast.
05Auto electrical & air conditioning
Electrical diagnostics, repairs and ARC-authorised air-conditioning support for heavy vehicles, plant and mobile equipment.
Experience you can see.
Why choose McCarthy Diesel & Plant?
We combine the responsiveness and accountability of a family business with the systems, equipment and experience to take on demanding work.
Workshop & field support
Bring the job to us or let us bring the capability to you. Our workshop and mobile teams work together to minimise downtime.
Multiple trades, one call
Mechanical repair, heavy fabrication and precision line boring under one roof means fewer suppliers and a cleaner path to completion.
Experienced people
Plant mechanics, heavy vehicle mechanics, boilermakers and operators working as one practical, highly skilled crew.
Safety by default
A professional culture built around protecting our people, our clients and the public while delivering work efficiently.
DOZCO parts, backed locally.
McCarthy Diesel & Plant supplies DOZCO products across NSW, including rock breakers, breaker tools and undercarriage parts for heavy machinery working in construction, demolition, quarrying and mining. The real advantage? We can supply the parts and fit them too. You get trusted DOZCO gear installed by experienced plant mechanics, all through one workshop.
Family owned. Hunter built.
Our story began in 2016 as Hunter Rail & Civil, delivering civil construction services across the region. As the business grew, we built the in-house capability to service, maintain and repair our own fleet of heavy vehicles and plant, keeping our equipment reliable and our projects moving.
That hands-on experience became the foundation for McCarthy Diesel & Plant. We evolved the business around the mechanical, fabrication and field-service capabilities we had developed, offering the same practical support and high standard of workmanship to clients across the Hunter, Newcastle and Central Coast.
Our strength is our people: a close, capable team committed to good relationships, continuous improvement and getting every job done right.