I RAN A SCHWING 28 M FOR A GUY  OCCASIONALLY FOR FREE JUST BECAUSE I WANTED TO LEARN.I STARTED A MOBILE MIX CONCRETE COMPANY.I WOULD USE THE PUMP WHEN I NEEDED TO BUT IT HAS STARTED TO BECOME A PROBLEM FOR ME .SO I HAVE MADE UP MY MIND TO GET A LINE PUMP TO SERVICE MY CUSTOMERS ESPECIALLY THOSE WITH SMALL POURS IN TIGHT PLACES THAT THE BIG PUMPS CANT GET INTO.WHICH I FOUND MY SELF DOING LATELY.THIS IS WHY I WAS ASKING FOR SOME HELP ON HERE.ALSO UPDATED MY PROFILE.......MY CELL IS 284 541 2522..this will be long distance as im down in the virgin islands    .EMAIL......gordapeak@yahoo.com

ALSO FORGOT TO MENTION IM USING A CRUSHED GRAVEL 3/4'' 1/2''AND 3/8 '' MIXED. FOOTINGS, SLABS, BEAMS ,DRIVEWAYS,PATIOS.RESIDENCIAL AND COMMERCIAL JOBS

Well I guess you are plugging up if your using a 2.5 hose but that could be a guess with all the info you left. Give a little more info.

NOOOOOOOOOOO I DIDNT BUY AS YET IM TRYING TO MAKE AN INFORMED DESISION .DONT WANNA MAKE A MISTAKE..WAS THINKING OF A USED PUMP SHOULD IT BE TRAILER OR TRUCK MOUNTED.

try usedconcretepumps.com theres a putz 21.12 on there for 65,000us dollars and will do anything pea gravel big rock shotcrete anything and theres also a putz 1408 samething they will do anything and there both truck mounts

definitely truck mount if possible,easier access to jobs and manuvering is alot better,plus less tires to replace.  

if you are sellin a boom pump service on your web site then......

try something like a 17m schwing