Diesel Equipment Service Technician — PTO, 12V/24V & Diagnostics

CTOS - Trucks & Equipment; Orlando (FL); On-site; USD 52,000 - 76,000; Full time

Benefits offered by this job

Paid vacation

Sick time

Holidays

401k match

Healthcare

Dental

Vision

Prescription insurance

Uniforms

Boot allowance

Ongoing training

Job summary

Custom Truck One Source (CTOS) is seeking a Diesel Mechanic to service heavy truck chassis (Class 6–8) across our nationwide locations. You will diagnose mechanical, hydraulic, and electronic faults using advanced software and test equipment, and perform repairs on steering, suspension, braking, and powertrain components.

You will handle emissions systems, install PTO gearboxes, and verify hydraulic and electrical systems, reading schematics to correct 12V/24V faults while maintaining shop

Qualifications

• Vocational/technical training or military mechanical background preferred.
• Experience with heavy trucks and diesel systems is a must.
• Strong diagnostic and troubleshooting abilities are essential.

Responsibilities

• Use advanced diagnostic software and test equipment to pinpoint mechanical, hydraulic, and electronic issues.
• Rebuild and repair steering, suspension, and braking systems across vocational truck chassis and related powertrain components.
• Service emissions systems—especially EGR coolers and valves—to keep trucks compliant and reliable.
• Install and repair PTO gearboxes; verify performance of hydraulic pumps, valves, cylinders, and winches.
• Read schematics and correct complex faults in 12V/24V circuits, wiring harnesses, starting/charging systems, and ECUs.

Skills

Heavy equipment repair

Hydraulic system troubleshooting

Diesel engine familiarity

Electrical systems diagnostics

PTO and auxiliary systems

Crane and lifting equipment systems

Aerial and utility equipment systems

DOT and equipment inspection

Troubleshooting and repair planning

Education

Vocational/technical school graduate

Military veteran with mechanical training

Equivalent experience

Tools

Diagnostic software

Test equipment

Job description

Could this be your next shop?Do you enjoy chasing down tough electrical faults, turning wrenches on heavy truck chassis, and bringing emissions systems back into spec? At Custom Truck One Source (CTOS)—with 30+ years in business, 40+ locations, 2,600 employees, and a 10,000+ unit fleet supporting utility, telecom, rail, and construction—you’ll do exactly that.What will you tackle here?Find it fast: Use advanced diagnostic software and test equipment to pinpoint mechanical, hydraulic, and electronic issues. Make it solid: Rebuild and repair steering, suspension, and braking systems across vocational truck chassis and related powertrain components. Clean it up: Service emissions systems—especially EGR coolers and valves—to keep trucks compliant and reliable. Power the work: Install and repair PTO gearboxes; verify performance of hydraulic pumps, valves, cylinders, and winches. Clear the codes: Read schematics and correct complex faults in 12V/24V circuits, wiring harnesses, starting/charging systems, and ECUs.Are you a fit?You hold a valid driver’s license (CDL a plus).You’ve worked as a Diesel Mechanic on Class 6, 7, or 8 heavy trucks.Your mechanical aptitude is high, and you never compromise on shop safety and compliance.You’re a vocational/technical school graduate or a military veteran with specialized mechanical training—or have equivalent experience.Why CTOS?CTOS offers competitive pay based on skills and experience, paid vacation, sick, and holidays, 401k match, healthcare, dental, vison, prescription insurance, uniforms, boot allowance, ongoing training and more.Bring these strengthsHeavy equipment repairHydraulic system troubleshootingLight-vehicle diesel engine familiarityDiesel and heavy equipment systems knowledgeElectrical systems and diagnostics for heavy equipmentPTO and auxiliary systemsCrane and lifting equipment systemsAerial and utility equipment systemsDOT and equipment inspection complianceStatement**Equal Opportunity Employer