job site requiring no mess
crete 08-30-2017 comment profile send pm notify

So. I have a job coming up capping a dirt floor in a craw space with the customer not wanting any mess in the house yard etc. I run 3" system on a swing tube pump. My question is can I reverse air clean out back into the hopper with the cover shut? I'm planning on air input on the discharge end with a cheap nerf ball so I don't really care if the ball get's chopped up by the swing tube. Then drive off site to rinse out the hopper. Am I on the correct path? Thanks Crete Also I would be running the pump in reverse, forgot to say that.


b-alto 08-29-2017 reply profile send pm notify

Sounds like a great plan Terry! Take  a few photos : ) I've been thinking of back blowing , but i haven't tried it yet. I use a tub and plastic. Timing and dry pumping helps. Off site cleaning should be an extra 100 bucks? i hope.

T-Riffic 08-29-2017 reply profile send pm notify

Yes it will work you might want to tie down the lid just in case you didn't shut the air off fast enough. Depending how fair of a drive you need to make to wash you might want to suger the mud .

JoelDLong 09-04-2017 reply profile send pm notify

Pump will almost pull it back in reverse without the air, so be easy with air.  Be sure and leave it reversing while you have air on or it will blast lid.  Very little air is needed.  Once you pull reducers off back, shoot a few gallons of water backwards through s-tube while reversing to keep mud loose.  Drive slowly with hopper full of mud, it will jerk you into a tail spin due to the weight lifting up on tongue..i nearly learned this the hard way!!  Never crossed my mind, but I won't ever forget it now!  I liked this method of clean out so well that I used it ALL the time, even when dumping hopper on site.  A whole lot safer and contains mess very well.