A new drop-box enables a Chelsea 249 power take-off to directly direct a hydraulic pump on Ford F series trucks.
The Hydra-Drive drop-box from Harrison Hydra-Gen Ltd. was displayed at the Boss Industries LLC booth at the 2018 Work Truck Show in Indianapolis this March.
Justin Majzel, a midwest business manager for Harrison Hydra-Gen Ltd., promotes the new Hydra-Drive drop-box at the booth of Boss Industries LLC, a sister company of Harrison, at the 2018 Work Truck Show in Indianapolis.Photo: Keith Norbury
The Chelsea 249 is designed specifically for Ford F series trucks. However, on four-wheel drive F-250s to F-550s, the drive shaft to the front axle passes so close to the PTO that it only enables a small gear pump to mount to it, said Justin Majzel, a midwest business manager for Harrison Hydra-Gen.
Houston, Texas-based Harrison is a sister company of Boss, which is based in LaPorte, Ind.
The Hydra-Drive drop-box enables mounting at the bottom of a variable displacement pump, which can power a variety of hydraulic devices. That includes, generators, rescue tools such as Jaws of Life, cutters, or cranes.
“It’s really for anything hydraulic,” Majzel said. “You don’t have to use this big variable replacement pump like this. A lot of guys just use it as a gear pump.”
The drop-box has four gears inside, which reverses the rotation in a one-to-one ratio, he said.
It utilizes a common SAE two-bolt 7/8th inch 13-tooth spline. “So anything really can mount there,” Majzel said.
The drop-box is also being used on two-wheel-drive F-650s and F-750s, he said.
“What they have to do on those trucks is they’re remote-mounting pumps back here with a drive line and they have to move Ford’s factory mounted equipment around,” Majzel said. “There’s a lot of labor involved. So they’re buying this and they’re mounting their own stuff, their own pumps.”
For more information about Harrison Hydra-Gen, visit http://harrisonhydragen.com.
