Thanks for the great information, we have not had a chance to check hydraulics and the truck was empty at time of failure. We can check that tomorrow as well as asking the tow dept how they ramp up the rpm's.
Brick on the gas pedal is also unacceptable. The different pto boxes on Hino rollbacks tend to be limited to the 1200 rpm range. Sure, when run faster than that the bed works fantastically well, but the pto will eventually grenade, throwing metal into a $6000 transmission.
The engine ecu has two pto inputs, and if one is wired up to the pto switch, the engine can immediately ramp up to whatever rpm is programmed into the ecm. This takes an hour or two worth of wiring a relay to the pto controls and ecu inputs, and then Hino diagnostic software is used to set the rpm.
What you end up with is the ability to back up to a car, put it in park, hit the pto switch (or shift it, if air controlled) and as soon as the pressure or position switch on the pto box clicks, immediate ramping of rpm and all the power the engine is capable of making at that speed is funneled into the hydraulic pump.
Of the dozens of rollbacks I've worked on, Ive only seen one set up to do this. All the others were not, the beds are all sluggish and weak. After this mod, there's nothing but positive feedback from the drivers. When tow companies have more than one Hino and have one modified, the rest soon follow.
