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Air Brake Tractor/Trailer System Trainer

Give students hands-on experience with a fully operational two-line air brake system representative of those used on medium- and heavy-duty trucks. The Air Brake Tractor/Trailer System Trainer (778-01) provides practical training in tractor-trailer braking, reservoirs, parking brakes, control valves, air pressure measurement, and trailer connection and disconnection.

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Understanding a complete tractor-trailer air brake system requires students to see how pneumatic components interact across both the tractor and trailer. The Air Brake Tractor/Trailer System Trainer (778-01) from LJ Create recreates a fully operational two-line air brake system, allowing students to investigate the operation of braking components commonly found on medium- and heavy-duty trucks.

This heavy vehicle air brake training system uses quick-fit connectors throughout the board and is specifically configured to slow system operation, making individual component actions easier for students to observe. Students can investigate normal braking and reservoir operation, tractor-trailer connections, parking brakes, trailer control valves, load sensing, and system air pressures while working with representative commercial vehicle braking components.

Features

  • A fully operational two-line air brake system recreates a typical heavy-vehicle tractor-and-trailer setup.
  • Separate tractor and trailer systems demonstrate braking interactions across a complete combination vehicle.
  • Representative commercial vehicle components reflect systems used on medium- and heavy-duty trucks.
  • Slowed system operation makes the sequence and movement of pneumatic components easier to observe.
  • Quick-fit connectors provide accessible connections throughout the training boards.
  • Pressure measurement capabilities allow students to monitor operating air pressures using gauges.
  • Load sensor valve introduces students to load-dependent air brake operation.

Normal Brake Operation
Investigate the normal operation of a two-line tractor-trailer air brake system.

Air Reservoir Operation
Explore normal reservoir operation and its role within the pneumatic braking system.

Parking Brake Operation
Investigate the application and release of the tractor parking brake.

Tractor-Trailer Braking
Explore trailer connection and braking and how the tractor and trailer braking systems interact.

Trailer Control Valve
Investigate the operation of the trailer control valve within the air brake system.

Trailer Parking & Disconnection
Explore trailer parking brake operation, trailer disconnection, and system evacuation.

Air Pressure Measurement
Observe operating pressures throughout the system and measure air pressure using pressure gauges.

Load Sensor Valve
Investigate operation of the air brake system’s load sensor valve.

Curriculum & Program Integration

This automotive trainer includes practical tasks and activities for students and can be used alongside LJ Create’s cloud-based software.

LJ Create’s Cloud-Based Software

LJ Create’s optional cloud-based software extends hands-on learning with interactive theory presentations, practical tasks, investigations, and assessments. Digital content connects to activities performed on the training equipment, helping instructors blend online instruction with practical automotive skill development.

Air Brake Tractor/Trailer System Trainer (778-01) Product Details

This heavy-duty truck air brake training system features:

  • Fully operational two-line air brake system
  • Tractor and trailer training panels
  • Components representative of medium- and heavy-duty truck braking systems
  • Quick-fit connectors throughout the system
  • Spring actuators limited to 200 mm of travel
  • 8 mm air pipes
  • Slowed system operation for easier observation
  • Air reservoirs
  • Tractor and trailer parking brake systems
  • Trailer control valve
  • Load sensor valve
  • Pressure measurement points
  • Tractor-trailer connection and disconnection capabilities
  • Topics Covered
  • Normal brake operation
  • Normal reservoir operation
  • Parking brake application and release
  • Trailer connection and braking
  • Trailer control valve operation
  • Tractor/trailer connection
  • Trailer parking brake operation
  • Trailer disconnection and evacuation
  • Operating air pressures throughout the system
  • Air pressure measurement using pressure gauges
  • Load sensor valve operation

System Includes

  • Air Brake Tractor/Trailer System Trainer
  • 12V, 5A power supply unit
  • Practical activity manual

Requirements

  • Automotive workshop tools
  • Air supply: 120 PSI

Technical Specifications

  • Tractor Trainer
    • Dimensions: 107 × 33 × 74 in (W × D × H)
  • Trailer Trainer
    • Dimensions: 53 × 33 × 74 in (W × D × H)

Additional Specifications

  • Air Supply Requirement: 120 PSI
  • Power Supply: 12V, 5A
  • Spring Actuator Travel: 200 mm
  • Air Pipe Size: 8 mm

  

Hands-On Automotive Training

LJ Create has an extensive lineup of Automotive learning solutions backed by a digital curriculum to support auto labs in preparing the next generation of automotive talent. 

Over 5,000 labs installed across the US

Used in 15,000 institutions worldwide

45+ years in providing learning solutions

AutoLab and ASE

LJ Create’s AutoLab curriculum is aligned to ASE task lists and learning outcomes, helping students build the knowledge and hands-on skills needed for careers as medium/heavy-duty truck technicians.

Each lesson starts with engaging knowledge-based instruction, including presentations, simulations, and investigations to establish a strong foundation. Students then apply what they’ve learned through hands-on training using operational rigs, panel trainers, circuit board trainers, and sectioned trainers.

This framework ensures students develop the confidence and competencies required to meet ASE expectations and succeed in today’s automotive industry.

Dedicated Automotive eLearning Curriculum

AutoLab’s eLearning courses support students from classroom concepts to real-world application through structured, hands-on activities. Available within the AutoLab Digital Library, each lesson includes practical tasks, shop job sheets, safety guidance, and instructor resources that support learning on LJ Create training equipment.

Whether students are working with sectioned trainers, autotronics trainers, operational rigs, or full vehicle trainers, each activity reinforces the ASE-aligned knowledge they’ve already developed. Together, these Skills Lessons help students build the confidence, technical skills, and workplace readiness needed for success in today’s automotive industry.

Automotive Training for Every Level and Class Size

From electrical fundamentals to complete vehicle systems, these training solutions prepare students with the practical skills needed for careers in today’s transportation industry.

Panel Trainers

Introduce students to automotive systems in a safe, interactive learning environment. LJ Create’s panel trainers allow learners to visualize components, troubleshoot circuits, and build foundational skills before working on live equipment. Topics include Hybrid/EV systems, heavy vehicle electrical systems, and more.

Desktop Trainers

Bring hands-on automotive concepts to any classroom with compact desktop trainers. Ideal for smaller spaces and introductory courses, these trainers help students explore electrical, electronic, AC, and other core automotive systems through practical activities.

Full Systems

Provide students with real-world experience using full-scale automotive training systems. From suspension and braking to four-wheel drive and steering, learners gain the practical skills and confidence needed to diagnose, service, and repair modern vehicles.

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