I am almost too embarrassed to ask, How to i make this think dump? It's and automatic , The guy to me a sequence but i can not remember it! Put in drive engage smaller lever then back to neutral to dump with large lever, is that correct??
Yes the smaller lever puts the PTO in gear, and that's why you have to put the transmission in drive. It stops the gears from turning so that the PTO gear can engage with the transmission gear. Then the larger lever is just the hydraulic control, either up or down.
Thank you it works now!!!
Used to drive a T850 now and then with an Allison, sounds like the same setup you've got there. It was old enough it had a driveshaft between the PTO and the hydraulic pump. Every now and then (and I did it once myself) somebody would forget to take the PTO out of gear before driving away from the dump spot. It was either the second or third shift, when it changed gears it must have been ahead of the PTO drive gear because you would get an instant overspeed and throw the driveshaft out from under the truck. ALWAYS took out the transmission pan when it left. Something to keep in mind.
LOUD, OBNOXIOUS buzzers and lights help prevent that. I had a lube truck that a bozo drove 30 miles with the compressor PTO engaged, burned up a $1600 compressor head. I asked bozo why the buzzer didn't remind him the PTO was engaged and he told me he cut the wire because it bothered him. If the comp was running he shouldn't be in the cab? He got a chance to explore alternate employment opportunities. After that all stationary PTOs were Hotshot types wired through the neutral safety switch. Ask me about the blown up product pump on a fueling truck on the county road.:Banghead
On manual transmissions the PTO usually runs off the countershaft so it's constant with engine RPM with whatever ratio there is. For some reason on the Allison I was talking about there was a change of ratio ahead of the PTO drive so when it shifted... ouch! LOL