Pto/blower/cruise problems

Thanks for all the advice guys, i will start with replacing the speed sensor, i need to read speed weather or not that foxes my issue, im currently using a gps speed app on my phone. NCDRIVER1 the main reason i unplugged the speedo was because even in neutral/park the odometer/trip meter would just be racking up “miles” i also have a hard breaking issue but thats for another thread. The speed sensor installs by threading in untill it bottoms out then back a 1/4 turn correct??

CATSDP - i will invest in a longer screwdriver to have as a backup lol but the issue is the rpms dont stay constant while running the blower. As it comes under more and less load during pumping the rpms fluctuate, which makes keeping the tank/line preassure steady.

 

Okay so this morning i had a delivery, hooked up fired up the blower and set the rpms, stepped out of the truck and the rpms dropped out. Shut off the blower, shut off the cruise depressed the clutch slid my foot off it allowing it to spring back on its own. Fired up the blower and the cruise and she pumped for 50mins at 1300rpms no problems. On my way back to the yard i used the cruise control but it kept dropping out. I depressed the clutch and let it spring back tried the cruise and it worked. I decided to do a little test. If i take my boot and tap the side of the clutch pedal ( not push or pull) the cruise will drop. If i hit it again the cruise will work again. Is there an adjustment on the pedal/sensor contact or is this just a faulty switch, my clutch was replaced not too long ago could it be related??

 

Frank Speak,

You may have a pto with a higher gear ratio then mine. I have other trucks in my fleet with ptos that dont require any additional rpms then idol and they turn the blower 1200rpms.

Also depends on the cfm/rpm rating of the blower as well. Not all blowers are the same air volume per 1 complete revolution.

My pto is almost a 1:1. At idol i cant keep tank/line preassure above 6-7 lbs.

What material are you pumping? I haul cmenet and the silos i blow off in to are 50-70feet tall. So i have to pump the product 50-70 feet up plus the length of my hose (10-20feet) depending how close to the pipe i can get, plus the length of the pipe befor it turns to go up.

At 10-12lbs im empty in about 50mins to 1 hour.

Rpms at 1300, 1 hopper product valve open 100% and the jet line valve open 3/4 keeps my tank/line pressure steady at 12psi.

Also most tanks are spec for 10-12psi opperation. Ill push mine to 15 Only when instructed by the customer. Most plants have signes posted for 8-10psi max but thats just too low in my op so ill stay around 12.

Oh and i also have a siliencer that i hook up to the blower which i knoticed seams to bring doen the air flow some.