JCB 310S

Discussion in 'Machinery' started by pbg somerset, Mar 15, 2019.

  1. pbg somerset

    pbg somerset Member

    Can anyone suggest why when fitting or removing hydraulic hose quick couplers on grab I can't release any residual pressure in the system so end up slackening off pipe unions to let pressure go in order to fit or dissconnect ?
     
  2. farmerbill

    farmerbill Member

    Are you dumping the pressure by pressing the switch then rocking the auxiliary roller on the joystick?
     
    Lofty1984 likes this.
  3. Stoxs

    Stoxs Member

    you need a new accuimilator, located under rear of boom.
    Can only be checked with specialist equipment. Not sure on cost of new one but not mega bucks. easy to fit . I think i would just get one and try it.
     
    TripleSix likes this.
  4. pbg somerset

    pbg somerset Member

    With engine off , but switch on , operating auxiliary roller has no affect
     
  5. pbg somerset

    pbg somerset Member

    Sounds like that accumulator then , can they be repaired ?
     
  6. Stoxs

    Stoxs Member

    nope, new unit.
    sealed sphere with a diaphragm inside, oil one side air the other, diaphragm splits stops working.
    certain they are not expensive. I would guess under£100.
     
  7. milkloss

    milkloss Member

    Location:
    East Sussex
    Odd, I would have thought if you dumped the pressure that was it?

    I partly unlock/ lock the pins and then the couplers will, 9 times out of ten, come off/on without switching the machine off. Flat face ones.
     
    Last edited: Mar 15, 2019
  8. davidroberts30

    Location:
    pembrokeshire
    Engine off,ignition on the dump the pressure
    Mine needs about 4 or 5 seconds after turning the key back on before it dumps

    Try your on the boom rocker,that will dump pressure as well
     
    Down farmer and milkloss like this.
  9. davidroberts30

    Location:
    pembrokeshire
    Only accumulator I got near the boom are the 2 long 1s on the main lift ram
     
  10. Stoxs

    Stoxs Member

    there is one for the release of pressure in the system, if i recall correctly it is under boom at the rear.
    on a 536/60 its on the back corner of the cab under boom.
     
  11. davidroberts30

    Location:
    pembrokeshire
    Not on my 08 310s
     
  12. milkloss

    milkloss Member

    Location:
    East Sussex
    Nor mine. Maybe he’s got the pressure release button jobby?
     
    Last edited: Mar 15, 2019
  13. Stoxs

    Stoxs Member

    long time since i dicked around with a 310, looking at picture its under rear right.
    check with local dealer before buying. Got a feeling they need to be set up so it may need fitting by dealer as well.



    Screenshot_20190315-224742_Chrome~2.jpg
     
    milkloss likes this.
  14. milkloss

    milkloss Member

    Location:
    East Sussex
    Theres a few sphere shaped ones under the cab but not under the boom I don’t think. That diagram looks to be under cab and there’s two I can see.
     
  15. Down farmer

    Down farmer New Member

    Location:
    Moira co down
    Surely the accumulater is only to do with the soft ride facility for travelling on road ,pressure needs to be released in the system when changing oil fittings as described above by switching engine off and rolling appropriate switch to release pressure on fittings.
     
  16. davidroberts30

    Location:
    pembrokeshire
    The sphere in the middle of the pic is the brake accumulator
     
  17. Thick Farmer

    Thick Farmer Member

    Location:
    West Wales
    I hit the ends of the fittings with a hammer and that usually does he trick!
     
    Pigken likes this.
  18. davidroberts30

    Location:
    pembrokeshire
    Hammers and matches:LOL:
     
    Thick Farmer and mtx.jag like this.
  19. hally

    hally Member

    Location:
    cumbria
    We have had this problem with a new Kramer, you can rock the third service switch to release the pressure but by the time you got out to the grab it’s built up pressure again. Sorted this week after some moaning to Kramer by fitting a pressure dump switch on the boom, the difference it has made has been dramatic. What was a bitch of a job is now easy, it was so bad we did think we were going to reject the Kramer over this issue. However they have told us we have to pay for this button which in my opinion should have been standard and it’s not cheap.
     
    Thick Farmer and geoff570 like this.
  20. KB6930

    KB6930 Member

    Location:
    Borders
    I don't know about a 310s but our 536.60 needed an accumulator to solve this exact problem but the pivot steers could be a different set-up.
     

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