• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

Search results

  1. I

    Kubota/case ck25

    I have a case ck25 in workshop same as older kubota kx71. Tracks are working fine but all arm movements are slow. It has good hydraulic pressure has no trouble digging just slow.tracks are operated via rods but everything else is pilot/servo this led me to believe my problem was with servo...
  2. I

    Ec210b overheating hyd oil

    Do you mean 10% when the machine is revved up and working under load?
  3. I

    Ec210b overheating hyd oil

    Yes i have checked these 2 lines they have full servo pressure when no service is touched and they fall off proportionally as you move a lever as they should. Standby pressure is low maybe something like 10 bar at idle on both pumps. Does anybody know what flow i should be seing from the case...
  4. I

    Ec210b overheating hyd oil

    Found nothing in case drain old pump didnt break up it was just worn where swash plate pivots and some pistons had play in them
  5. I

    Ec210b overheating hyd oil

    Changed all filters and checked strainer. Checked control pressure to both pumps its fine. Pumps are backing off there is only a couple of bar pressure at idle with no function activated. Also checked to make sure hammer circuit wasnt constantly activated. And yes pressure on tank when i press...
  6. I

    Ec210b overheating hyd oil

    Swing is travelling way too far i know by just driving it. To set the pressures i fitted the new main relief that is to be set at 323 bar without the boost. The port reliefs are higher on boom and arm functions cant rember the spec but i think it was 350-360 ish. So i turned up main relief over...
  7. I

    Ec210b overheating hyd oil

    hello, I have a customer with a Volvo 210b, the hydraulic pumps gave up in it so we fitted recon service exchange pumps, also a main relief valve and I went through and set every pressure on machine to spec main relief servo all port reliefs. Machine was working fine when I left they called...
  8. I

    Jcb rotate circuit

    Hi, i have a jcb js220 2006 to fit a rotating selector grab to. It has 2 way hammer lines for opening and closing the grab but nothing for rotate. I was going to put a 2 way solenoid on wired to 2 buttons on the joystick. The problem i have is where to get feed from for this solenoid i could get...
  9. I

    Volvo l70c ring gear

    Hi about 6 months ago i fitted a starter ring gear to a volvo l70c for a customer of mine. It had broken and missing teeth. It was the first job i did for them so i dont know much history of it except they said it chewed threw a few starters. All went well 6 months down the road the new ring...
  10. I

    Engine block question

    Hi folks. Quick question we have a mercedes 906 engine here that was recently overheated. We wer pulling out the liners with a hydraulic pullers. The jig must not have been straight when we started to pull 1 of them and we cracked the block. It cracked down at the crankcase end where the block...
  11. I

    John Deere 490e swing brake leak

    By any chance a hairline crack in the cap or maybe when the previous repair was done a bolt was overtigthned and cracked the housing? sometimes them little cracks are hard to see
  12. I

    Shockless valve

    I know how a ram and spool valve work this is more technical
  13. I

    Shockless valve

    Hi all. Just wondering can anybody explain to me what a shockless valve does and how it works. I see them between the pilot control valves and valve chest on excavators but never understood them.
  14. I

    Komatsu pw140 boom issue

    I will know more early next week i think its a -6. Will reply when i get back to it
  15. I

    Komatsu pw140 boom issue

    We have a pw140 wheel excavator here and if you are trying to use 3 functions eg pull in the dipper raise the boom and curl the bucket at the same time then the boom will stop dead until the bucket cylinder comes to the end of its stroke then it will shoot straight up. Anybody come across...
  16. I

    Buying a 12-14 Ton Track machine

    Hi Eddie, we have hitachis ourselves and find them reliable and would never change but with that said a friend of mine in Cork bought a brand new Volvo 140 a few year back and put 6000 hours on it and all he ever did was service it and a quick hitch hose. I think the Volvos might be a bit...
  17. I

    General excavator pump question

    Just trying to get my head around something ...correct me if i am wrong on any of this. Modern excavators use engine speed sensor, pressure sensors,angle sensors etc to vary a pressure signal to the pump controller making it adjust the swash plate angle correct? On older machines with no...
  18. I

    Jcb telehandler axle transducer

    We have a jcb 540 170 telehandler and i am just looking for some information about the safe load monitor. Particullarly the sensor mounted on the back axle i think they are the same on jlg"s and i know they have to be mounted properly and torqued down. I think they are called a transducer but...
  19. I

    Hydraulic cylinder spanner

    Its good to hear the different methods. Im liking that slotted one!
  20. I

    One for the Komatsu men

    Turned out to be the accumalators
Top