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Choosing the Right Crane Truck for Field Maintenance

Learn how Class 3, Class 5 and Class 6 crane trucks support different field maintenance needs and what to consider when choosing a configuration.

Crane Truck


When equipment needs maintenance or repair in the field, bringing it back to the shop may not always make sense. Crane trucks give crews a way to bring service capabilities directly to where the equipment is operating.

Those needs can vary based on the work being supported. Class 3, Class 5 and Class 6 crane trucks offer different crane and chassis configurations, giving fleet managers options based on how the truck will be used.

Start with the work the truck will support

Crane trucks can support a range of field maintenance needs, and the work itself can help narrow down which configuration makes sense. A crew servicing equipment along a utility right-of-way may have different needs than one maintaining heavy equipment on a large civil project.

  • Class 3: Often used across power, oil and gas, renewables and telecom for lighter field-service work. Applications can include servicing pumpjacks and wellheads or providing roadside assistance when mobile repair capability is needed.

  • Class 5: Commonly used across construction and civil projects for general fleet maintenance and repair. These trucks can support general maintenance and repairs as equipment moves through different phases of the project.

  • Class 6: Fits heavier-duty maintenance needs, particularly on larger civil projects. Crews can use these trucks to service larger equipment and yellow iron where additional chassis capacity is needed.

Start with the job the truck needs to do. From there, crane type and lifting requirements can help narrow down the right configuration.

Consider electric vs. hydraulic crane capability

Class 3 crane trucks use an electric crane, while Class 5 and Class 6 use hydraulic systems. That choice can affect lifting capacity and how crews use the truck during field repairs.

  • Electric cranes: Class 3 configurations are typically equipped with a 3,200-lb. electric crane with approximately 15 feet of reach. This setup works well for lighter field-service applications where crews still need lifting support.

  • Hydraulic cranes: Class 5 and Class 6 configurations use hydraulic cranes with greater lifting capacity, with reach varying by crane manufacturer and upfit. Configurations can reach up to 29 feet. The hydraulic system also allows crews to operate the crane and compressor at the same time.

Truck class alone does not tell the full story. Class 5 and Class 6 trucks can have similar lifting capabilities even though the Class 6 has a higher GVWR. The move to a larger truck may come down to the additional chassis capacity needed for the work.

Build around what crews need in the field

Beyond the crane, the truck needs the space and onboard equipment to support maintenance in the field.

  • Class 3 trucks have a 9-foot service body, while Class 5 and Class 6 trucks move to an 11-foot body. Rollout drawers and storage compartments help keep tools and parts organized and accessible.

  • The 3-in-1 welder/generator/compressor comes standard on Class 5 and Class 6 and can be added to Class 3 configurations. This gives crews access to welding, compressed air and electrical power for repairs in the field.

  • Additional upfits, such as a lube skid or fuel transfer tank, can help tailor the truck to the maintenance work crews perform.

What crews carry on the truck also matters. Tools and onboard equipment contribute to the total load, making carrying capacity another consideration when choosing a configuration.

The right crane truck comes down to how crews will use it in the field. Considering the crane, chassis and overall setup can help fleet managers choose a configuration that fits the work ahead.

Explore PTR’s Class 3, Class 5 and Class 6 crane truck rentals or contact our team to find the right fit for your operation.

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