Medium/Heavy Vehicle and Truck Technology/Technician (2023-2025)

Orientation and Safety

Tools and Fasteners/Hardware

Suspension and Steering Systems

Preventive Maintenance

Brake System

Diesel Engines

Air Intake and Exhaust Systems 

Cooling Systems

Fuel System

Electrical/Electronic System 

Drive Line

RESERVED

Research diesel occupations and certification programs.

Identify truck classifications and configurations.

Use service manuals and online service information. 

Follow safety procedures and safe equipment operation.

RESERVED

Follow Environmental Protection Agency (EPA) standards for cleaning and disposal of waste and fluids.

Exhibit professional and personal standards and work habits and ethics in a diesel shop.

Comply with Occupational Safety and Health Administration (OSHA) regulations.

Use basic hand tools and power tools. 

Use fasteners, fittings, and hardware.

Drill and use threading tools and extractors. 

Use precision measuring tools.

RESERVED

Set up/Shut down, cut, and heat with an oxy-acetylene torch. 

Inspect and repair or replace steering linkage. 

Inspect and adjust basic wheel alignment and inspect tires. 

RESERVED

Inspect and test/service a power steering system.

Service wheel bearings and hubs according to Transportation Motor Control (TMC) guidelines.

Inspect and replace shock absorbers. 

Inspect and replace king pins.

Inspect and replace leaf springs.

Inspect and repair or replace air suspension components.

Inspect and service wheel assemblies.

Determine preventive maintenance intervals and procedures. 

Perform preventive maintenance inspection.

RESERVED

Inspect and repair or replace hydraulic disc brake components.

RESERVED

Inspect and repair or replace S-cam drum brake components. 

RESERVED

Inspect and replace or adjust air governors. 

Replace hydraulic brake lines and bleed brakes.

Inspect and repair or replace air brake lines

Inspect and diagnose and replace air brake chambers. 

Inspect and diagnose and replace master cylinder and hydraulic system components. 

Diagnose and repair or replace anti-lock brake system (ABS) components.

inspect and repair or replace air brake valves.

Inspect and repair or replace air dryers.

Inspect and repair or replace air disc brake components.

RESERVED

RESERVED

Inspect and replace and adjust slack adjusters.

Explain diesel engine operation and identify parts. 

Remove, inspect, and install camshaft and valve train components.

Remove, inspect, and install piston, connecting rod, and liner. 

Remove, inspect, and install crankshaft and bearings (mains and rods).

Replace engine oil seal.

Perform diesel tune-up (set overhead).

Remove, inspect, and install cylinder head and gasket. 

Remove, inspect, and install oil pump.

Remove, inspect, and install vibration dampener and flywheel.

Inspect and repair or replace air induction system components. 

Inspect and repair or replace exhaust system and components.

Inspect and replace charge air coolers and after coolers.

Inspect and repair or replace turbocharger.

Inspect and replace belts and pulleys.

Inspect and replace hoses and clamps.

Test and replace thermostat.

Drain, flush, refill, and bleed cooling system.

Test anti-freeze and supplemental coolant additives.

RESERVED

Inspect and replace water pump.

Inspect fan drives. 

Inspect and pressure test cooling system components.

Replace fuel filters and strainers.

Inspect and replace fuel lines, tank, cap, and fittings.

Prime and bleed fuel system.

RESERVED

Perform fuel supply and return system tests.

Remove and install injector/nozzle. 

Test and service battery. 

Test, replace and adjust bulbs and lamps.

Diagnose and repair or replace electrical circuits and components.

Test starting system and replace component assemblies. 

Test charging system output and replace component assemblies.

Analyze and interpret wiring diagrams.

Perform computer systems tests and analyze codes.

Diagnose, replace, and adjust drive-line components.

Perform clutch/clutch brake maintenance and adjustment.

Remove and install clutch assembly. 

RESERVED