PTO engagement on the move

That's the only way I know to do it is flip the button while you are holding clutch in or flip the button and let the pto grind till it engages

 

They obviously don't own the equipment, because the time they are saving by not stopping to properly engage the PTO isn't worth the potential damage caused by engaging it "on the fly".

The only way I can figure is they knock it out of gear, use the clutch brake to stop the input shaft, engage the PTO, release the clutch to get the gears spinning again and then get the truck back into gear. Great way to prematurely wear out the clutch brake. Have you ever seen a clutch brake? The friction layer isn't very thick...doesn't take much to use them up.

 

If I caught you doing that in my truck, you'd be out of a job before the load hit the ground. Getting in a hurry at a job site will eventually result in injury and tore up equipment.

 

You don't

PTO, power take off, drains power from the engine, transmission and drive shaft. Raises a dump bed or something.

Don't pop that PTO while moving.

With that said...

When I was running blacktop and stone with the Mack 500 super dump, once in a great while there is a chance to "Spread" the rock down 200 feet of bare dirt with a raising bed while moving. Put her into 2nd, clutch in, service brake on, hold then trip the PTO and start raising the bed, take off and move allowing the rock to spread.

Make #### sure your gate is chained. A couple links is enough to make that gate back there on the end of your dump bed open just enough to spread rock nicely.

Have a spool of spare TV cable ready to re-install if you snap it while spreading. Once the bed reaches it's max, that #### PTO needs to be taken off. And you get that rig stopped. It's a bit of a dance but saves a great deal of labor. NEver come out of 2nd all the way down until bed is empty.

 

Well those guys are what are known as hacks. The ones who destroy equipment and make us mechanics want to throttle them for being so ####ing stupid!

Stop the truck, stop the transmission gears, engage the PTO.

 

They way they do it is the same way you do it stopped. Put in the clutch in all the way (not half way) with the truck in gear. When they let the clutch out the PTO engages also. I agree that this sounds damaging. I have never done this.

I have driven at low speed with the PTO engaged to help the flow of gyp rock out of bulk tankers when dumping on the ground. I was always stopped when the PTO was engaged though because I had to get out of the truck to open the trailer bottoms anyway. That flow of air helps keep the rocks from binding.

Also for the guys that dump gyp with the butterfly valves, if you don't already know, if you didn't crack the bottoms a little before loading and the valve doesn't want to open, run up some air pressure in the tank with bottom air and that will help loosen that valve. Be ready for a slight blast of dust as the bottom finally cracks open.

On a side note. Funniest thing I ever saw. Even though we all knew the company was talking about trailer bottoms, they put up notices all over the place that said "If your bottoms are leaking, let the shop know immediately".
I told the dispatcher if my bottom is leaking, I'll call the doctor. He wasn't amused.

 

Hot shift PTO