ForConstructionPros.com

Mechanics trucks typically idle while technicians use the hydraulic crane, air tools and generator to make necessary repairs. This can put added wear on a truck's engine, transmission, power take-off (PTO) and exhaust aftertreatment system. In addition, it may not be the most fuel-efficient method to power the crane and tools.

Miller Electric addresses these issues with the EnPak Mechanic Series, an integrated diesel engine-driven compressor, generator and hydraulic pump.

The EnPak's rotary screw air compressor is rated at 40 cfm at 100 psi with a 175-psi maximum. This eliminates the need to stop working while you wait for pressure to build. Hydraulic power is provided by an Eaton variable-displacement piston pump. It provides a rated 3,000 psi at 8.5 gpm (up to 20 gpm maximum) for smooth operation of the crane.

The generator produces 6,000 watts of single-phase power, enough for most popular inverter welders and other power tools. Power is supplied through 120/240-volt receptacles at the back of the truck. The optional EnVerter power offers 2,400 watts of pure sine wave 120-volt power - regardless of the overall load placed on the EnPak - to run everything from laptops to lights and microwaves.

The unit can be mounted as a side pack or in the load space, and is integrated into the truck for ease of use. Its 27-hp Kubota diesel engine shares the truck's fuel supply. The EnPak also uses the truck's 12-volt battery, and even provides 12 volts of power and a 60-amp charge to the battery to ensure peak performance and extended life.