1000 yard pour in NJ today. Customer owned one 39M I brought another.  I got started a half hour late due to cars being parked in my way and waiting for a tow truck.  Slick pack jammed up between one and two for some reason.  Blew the swing elbow o-ring out trying to get it through. Finally had to take a few elbows off to do so.  Then a hydraulic leak- a fitting came loose (brand new pump).  On top of that terrible service. 13 hours later I'm home, needed to vent a little. 

On a postive note I got a chance to open the pump up a bit and see what it could do.  2025-6 high pressure kit opened up wide open the boom did not move more than a few inches up and down when stretched out.  Big improvement over older ones we've had.

On the positive side

Good job getting it done and getting home safe and sound. You have any video or pictures?

Yeah some days are like that.  I've had days were I told myself if everyday was like that I would quit.  But tommorrow will be a new adventure, for sure.

no videos or pictures but the next one i will be sure to get some, forgot to mention it poured rain for an hour too. Todd i'll send you some other pictures i'd like you to post thanks.

hold on to your pictures for a bit ok, i have a new section of the site just for pictures but it will not be up and working for a couple more weeks.

Do you know why you blew the o-ring out of the back end?

Yea, it was jammed up and I tried pushing it forward and back so much the pressure was too much. This pump kit is set up on the high pressure side as well so that little gap there was the weakest link in the line. Pretty dangerous actually.

 There really should not be enough gap for the o-ring to jump out,even under high pressure.Take the o-ring out of the recess,clean and reseat with a little grease,loosen the  46mm adjusting nuts on the transition elbow,and adjust transition elbow so there is no gap for the o-ring to jump out of.Instead of trying to jam a rock plug through the boom,take the hose off,stick a wet sponge ball in the tip elbow,stand the boom staight up in the air and reverse the pump.Once boom clears dump the hopper and re-prime.

 I am sorry sir,I thought I read in his post that he had to pull some elbows off.What does WTF mean?

WTF is cursing, its kind of like saying "what the Heck" but using the F word.

Yes i did try everything to get it unstuck, up down back and forth nothing worked. I pulled off the elbow between 2 and 3, only prime there, then found the clog between 1 and 2, pumped a little out and put it back together, concrete then went through no problem.  Did the same thing i've been doing since slick pack came around.  put a few bags in the hopper with some water, reverse a few shots then forward.  Never fails except this time for some reason.  I felt this solution (pulling off the elbows was the quickest way to get the problem fixed).  It really didn't take too long.

Those high pressure units are real BAD-ASS pumps. One too many times going forward to try and push it out and you are in trouble. A high pressure unit gives an entirely new meaning to being 'packed off'.

It is very important to keep the gap on the swing 90 tight. I am also right there with Speedy as to the use of an inverted fan belt in place of an o-ring; it is almost impossible to extrude a belt.

I am glad that you lived happily ever after. I would bet that you got smarter that day.

it sounds like the real problem was the o-ring. It was easier to suck air thru the gap than create negative pressure in the boom system.

I mix and prime the same way. I have learned over the years that sometimes if the RM driver discharges too fast it will displace the prime and shoot directly into the cylindrers. When this happens you chances of making it through the boom are greatly reduced. This is common when everyone is under the gun and rushing. I always go through the same conversation with the driver on prime evan if I have primed with them then a hundred times.

"My slurry is in the hopper. I need you to discharge slowly onto the S tube pushing my slurry into the machine and then I will tell you to fill it up quickly. It is very important that the slurry gets into the machine first"

Priming can be tricky. If the RM drive discharges too slowly. As the s tube swings it seems to wash down the sand and rock and again the chances of getting through are reduced. 

Last but not least is the old trick of not priming enough out the end of the boom or turning the pump off too early and you are clogged in the reducer.

Though it was a tough day. You are going to appreciate that 13 ball busting hours  on PAYDAY!

  NICE JOB!

The quickest way to turn a regular prime out into a hose whipping accident is to turn the pump off before regular concrete is "over the top" and coming out the discharge hose. Seed is right on. Always insure that you have pure concrete coming out of the tip hose before you stop the priming process. Too many needless accidents happen when the priming process is stopped prematurely. Swinging the boom into close proximity of job-site personnel before the priming process is correctly completed is asking for unneeded problems. Always... always have pure concrete discharging before swinging your boom close to anyone. It just makes good, safe sense. ;~)

You are a good Viking/// i mean operator Vasa.

Nice boat ;~)