Facilities Upgrade Series Part Three: Advancements in Fire Truck Frame-Up and Chassis Assembly

A fire truck manufacturing facility with a team member working on a fire truck chassis and frame-rails. Every Pierce^® Manufacturing fire truck includes many steps prior to the apparatus taking shape. In frame-up and chassis assembly, the foundation systems and components designed to support the finished apparatus come together with precision.

Throughout the Facilities Upgrade Series, Pierce has brought readers behind the scenes of the investments shaping its manufacturing operations. Part One explored advancements in fire apparatus paint and finishing, while Part Two focused on welding and fabrication, where raw steel and aluminum begin taking shape.

Now, Part Three moves further into the production process to explore how investments in frame-up and chassis assembly help support team members, gain efficiencies and maintain the quality fire departments expect.

How the Fire Apparatus Frame-Up Process Works

A technician works on a heavy-duty fire truck chassis during the assembly process.

Every Pierce fire apparatus starts with a strong foundation. During the frame-up process, individual chassis components come together to create a configuration built specifically for each truck specification.

While Pierce offers extensive customization, the frame-up process follows carefully defined manufacturing steps designed to maintain consistency, precision and quality from one apparatus to the next, and it all starts with the frame rails.

Each set of frame rails arrives at Pierce from a sister facility prepared for the specifications of an individual apparatus. From there, the frame-up team builds the chassis through a series of coordinated stages:

Position the E-Coated frame rails
Install structural components
Prepare the axles
Assemble the chassis
Apply the specified paint color
Complete final chassis systems
Conduct testing
Quality inspection

The result of the frame-up process is a chassis built to the engineering specifications of the individual fire apparatus while following a repeatable manufacturing process. Fire departments can feel confident in the quality, precision and attention to detail as the repeatable process has built-in necessary checks and balances.

How Technology Supports Precision Throughout Frame-Up

Technology plays an important role in helping the Pierce team maintain consistency throughout the frame-up process.

For example, how Pierce team members use digital technology to support production workflow. Truck Builder, Pierce's manufacturing system, organizes the tasks associated with each individual apparatus and allows team members to sign off on work as it is completed.

The combination of technology and the use of Truck Builder means quality is at the core of every production step. Technology and teamwork help ensure customers specifications are achieved.

A computer monitor displays the Truck Builder system in a fire truck chassis assembly facility.

Chassis Assembly: Bringing Critical Systems Together

After frame-up, the unit moves into chassis assembly, where many of the systems which support the finished fire apparatus begin coming together.

Since every Pierce chassis is built for a specific apparatus, assembly requires a combination of defined processes, experienced operators and close coordination across production, engineering, quality and materials teams.

A fire truck chassis undergoing assembly with a red engine block in a Pierce Manufacturing facility.

How the Fire Apparatus Chassis Assembly Process Works

The chassis moves through a series of assembly stations, with major systems and components installed along the way, including the following steps:

Route the main electrical harnesses
Install the engine
Add the radiator
Install the exhaust system
Build supporting substructures
Mount the cab
Install drivetrain components
Add pumps and additional systems
Conduct testing
Quality inspection

Although many of these steps follow established processes, the exact components, routing and installation requirements can vary based on the customer's apparatus specifications.

Manufacturing Enhancements Support a Focused Assembly Process

A major focus within chassis assembly is creating a production environment designed to provide operators with clear instructions, convenient access to materials and sufficient time to concentrate on each individual task.

High Flow Line (HFL): Chassis assembly currently operates across 11 stations, with plans to increase the number stations as the HFL develops. Dividing manufacturing processes into smaller increments provides operators the opportunity to focus closely on fewer tasks at a time. It also creates additional opportunities to review work throughout assembly to support consistent quality as production capacity increases.
Built-in Collaboration: Each shift, representatives from production, design engineering, operations engineering, quality and materials meet to review the work ahead. Teams can identify material concerns, engineering questions, supplier issues or other potential production challenges before they begin their work.
Visual Work Instructions: Pierce continues to strengthen work instructions, adding more detail for specific apparatus options and incorporating visual references to help operators understand how components are assembled.
Immediate Material Availability: Frequently used parts such as fasteners, brackets, harness components and electrical connections are positioned in centralized bins at individual workstations.

An orange parts cart in front of a red fire truck body inside a Pierce Manufacturing assembly facility.

Two team members working on a fire truck chassis in a modern manufacturing facility.

Equipment and Material Improvements Help Operators Work Efficiently

Pierce is also investing in technology and equipment improvements focused on enhancing individual assembly tasks for safety and efficiency.

One example of this is the driveshaft installation. Driveshafts vary in size and weight and historically required operators to manually position them during installation. The new lifting system utilizes a jack and driveshaft attachment to raise the component into the proper position and hold it securely while connections are completed. The result is a more controlled installation process, which reduces the physical demands placed on the operator while positioning the component accurately.

Together, these changes support a smooth production flow and provide team members more time to focus on assembling chassis with precision and quality.

As Pierce continues developing the High Flow Line, strengthening work instructions and enhancing tooling and material flow, the objective remains the same: provide team members the processes and support they need to complete each task with a high focus on quality.

Enhancements in processes and investments in technology are designed to help our team members work safely and efficiently while maintaining precision and quality throughout production.

As Pierce continues to invest in manufacturing facilities, the focus remains where it has always been: building fire apparatus fire departments can depend on.

Stay tuned for the next installment in our Facilities Upgrade Series!

In the meantime, review our recent manufacturing investments or reach out to your local dealer with questions.

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