The joint at the end of the third stage is making a judding noise.

We have pulled all the pins at the joint, greased and replaced them, and it is still making the judding noise.

All the ram pressures are reading correctly.

Any thoughts or expericences with this?

hi check boom pipes are not moveing, or  boom is not in line, if you have changed pins cant see it being any thing but boom pipes

when you changed the pin, did you also replace the bushing ? Thay can cause a noise when they get worn out .And like Kiwi stated you could have a pipe alighnment issue too.

could be pipe line brackets they make some strange noises when they have cracks in them, or could be a bushing problem,whatever it is thudding noises are never good.

Take it to the scrap yard and buy a pump.

Check the gaskets on the pipejoints.

got similar problems with A section on a 32/5,( so have a few others on all sizes), the pins/bushes have no grease ways in them and would probaly be better off on auto lube, if you get no joy on the pipeline front then go back to basics , stick your ear on the end of a bar up against each pin /bush and listen  as you move the section,you will soon pick out the one which is binding, bit like a stethescope!

Why dont you go back to the dealer??? or does he / she not have any service / support for there product

why not buy a pump with back up and service 24/7 ??

Have to agree with moneybags. Whats the point buying a Sermac if you cant get good support, you should have broght something where the dealer will sort out the prolem for you because concrete pumps without proper manufacturer support are not worth owning.

what year is your pump, as murf said the early sermacs were lacking grease ways on the pins, on the later ones this has been corrected. i would go with pipe line movement. We have always had good back up and service from our dealer. More than we ever had with the other more popular mfg`s. still one of the best machines we own.

Call this number I think he will have the answer for you he stocks sermac parts on the east coast and he owns one to great machine sorry boys 631 696 1522 his name is joe good luck!

Forgot to insert 'not' childish commemts

We once had a Dry Pin sound that we couldn't find till we moved the hyd. cylinder in and out with the rod end pin off and the noise came from the cyl. itself. The cyl. didn't leak but a little rust had formed behind one of the packings, which sqeezed it tight around the rod. Cleaned up the rust and put new seals in it and good to go. 

Jonesy-  If you take any thing back to the dealer be it truck  or pump youve got to leave it with them, they keep it for several days while they fix and your left with no pump. It costs you to take the pump there, with fuel and driver and then you got to get it back, so on top of payin a premium for running machine xyz( and they go wrong too)  you got to pay to get warranty work done as well . If you run your own shop , the best way is to sort it your self (no matter what the marque), and sort the bill out at the end.

murf - hear what ya saying bro...I guess it's all a matter of personal experience and what ya used to.  Me i run a Putz 32Z and of course like any pump you have your issues from time to time but personally I cant speek highly enough about the support i get from Putz. These guys really know there stuff and I just call one of there Field Service guys and sort it over the phone and if not they are here quicker than blink to sort me out...so as I said its all a matter of pesonal experience.  And by the way I am happy to have paid a premium when I get such good support. Keep on pumpin bro!

jonesy- your right on the personall experiance thing, as like pumper 22 we get better service, i just waited 4 weeks for a putz transfer box part, which they had on the shelf at the end of the day!! (dont even go there on that subject!!!) happy days!

I need to make a post here quick before more comments are made and this posting moves to far down and no one opens it any longer. First, Todd- I hope to have the Sermac banner flying real SOON. Just have a few more issues to sort out and then... Regarding the problem being mentioned, we have not experienced it here in the US, at least it has not been reported to me. One time, we did have a set of elbows binding on a customer's unit,and it was causing a snap noise, after the clamp was removed, it was obvious it was binding. In the big picture guys, concrete pumps are machines, and they are all subject to having issues from time to time. It's no secret that Sermac is experiencing the same slow down as all the other manufacturers. We have made a few changes to help us get thru this. The important thing is that Sermac is committed to staying here. We offer the 24/7 and have spare parts available. I, like everyone else, am looking forward to better times again- Contact me with any needs or questions- Thanks

 I got to say that here in the uk i have never had any problems with after sales service or parts. the uk dealer is always keen to help with even the smallest thing. we are only a small firm but sermac still treats us very well. and are always pleased to speak to us.

had exactly same problem with the 1 I operate. we thought the same way, must be pins I'n boom. we then found out the pipeline we bought was 20mm out which was pin pointed to stage 3. we ended up gettin a pipe made 20mm shorter and replaced the stage 3 pipe that was too long and everything was back to normal. the boom stopped making those noises and pipe line stopped shifting. hope this helps you

I've had several pumps where it was the hyd. cylinder that was making noise.. I have NO IDEA what judding means or what it sounds like... What I heared was a kind of vibrating sound.  Try to smear  grease all over the cylinder.. (the pushrod i mean.. Not the outside cylinder ;-)  and see if there is a change..

Sir Mac.. Just out of (large) interest.. Could you explain me the connection between the brand SERMAC and the spannish brand JMBH ? I know at least that the 40m is exactly the same design..