- Repairs: Adjust, overhaul, or replace defective parts, engines, transmissions, brakes, and fluid lines.
- Preventive Maintenance: Conduct routine checks, oil changes, filter replacements, cleaning, and lubrication.
- Testing: Perform final test runs on repaired equipment to ensure it matches manufacturer safety and performance standards.
- Testing Vehicles: Test-drive trucks or operate machinery to make sure repairs work correctly and safely.