What a heavy-duty equipment technician does
Heavy-duty equipment technicians maintain and repair off-road machinery such as excavators, loaders, dozers, cranes, forklifts and agricultural equipment. The work covers diesel engines, hydraulics, powertrains, brakes, and electrical and electronic control systems. Some work in a shop, while others drive a service truck to construction sites, quarries and farms. Many employers also want them able to work on on-highway trucks, which overlaps with the truck and coach technician trade.
In Ontario, heavy duty equipment technician (421A) is a voluntary trade, so certification is not legally required, but many employers ask for it as proof of training. Truck and coach technician (310T) is compulsory, which matters if the role includes on-road trucks and buses. Finch clarifies the mix of equipment and vehicles in your role first, then screens for the right certificate, the brands and systems you service, and the independence needed for field work.
Typical responsibilities
- Diagnosing and repairing diesel engines, fuel systems and emissions aftertreatment
- Troubleshooting and rebuilding hydraulic pumps, cylinders, valves and hoses
- Repairing powertrains, final drives, undercarriage and braking systems
- Using laptop diagnostic software to read fault codes and calibrate electronic controls
- Performing preventive maintenance and keeping accurate service records for each unit
- Completing field repairs from a service truck at customer and job sites
Qualifications and credentials
- Skilled Trades Ontario certificate of qualification as a heavy duty equipment technician (421A), often requested even though the trade is voluntary
- A 310T truck and coach technician certificate where the work includes on-road trucks, buses or coaches, since that trade is compulsory
- Red Seal endorsement, which supports moves between provinces
- A valid Ontario driver’s licence, with a class D licence and air brake (Z) endorsement for roles that drive larger service trucks
- Manufacturer or dealer training on the equipment brands you support
- WHMIS and site safety training, including Working at Heights where the work requires it
Who hires a heavy-duty equipment technician
- Construction and heavy equipment dealers
- Equipment rental companies
- Aggregate, quarry and road-building contractors
- Municipal fleet and public works departments
- Agricultural equipment dealers
Where we recruit heavy-duty equipment technician candidates
We fill heavy-duty equipment technician roles for employers across Toronto and the GTA, including North York, Scarborough, Etobicoke, Vaughan, Markham, Richmond Hill, Mississauga, Brampton, Oakville, Burlington, Oshawa and Pickering, and for employers across Canada. GTA employers can meet us at our North York office by appointment.
What Finch checks before you meet a candidate
- 421A or 310T certificate status, matched to the equipment and vehicles in your role
- Hydraulic, diesel and electronic diagnostic experience on the brands you service
- Comfort working alone in the field, including planning parts and tools for a site call
- Licence class and driving record for operating a service truck
- References from service managers or fleet supervisors
Interview questions to ask
- Tell me about a hydraulic problem that took more than one attempt to solve. What did you learn?
- How do you prepare for a field call when you do not yet know exactly what has failed?
- Which equipment brands and diagnostic software are you most comfortable with?