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Hammer Issues

Discussion in 'Construction Equipment Attachments' started by D5GDevo, Jun 11, 2017.

  1. D5GDevo

    D5GDevo Well-Known Member

    Joined:
    Sep 8, 2012
    Messages:
    61
    Location:
    Kentucky
    Howdy everyone. I just resently purchased a Komatsu PC-160 LC with a NPK E-210A Hammer. I used the hammer for maybe 12 hrs and noticed that it was leaking hydraulic fluid out of the exhaust hole of the hammer, not extremely bad but enough to make me stop before something bad did happen. It was still operating as it should. I greased the hammer about every hour of operation with the tool in the vertical position. I am not familiar with the internal workings of a hammer, but I hear they can be very dangerous to work on. Anyone have any info would be greatly appreaciated.
    Thanks in advance.
    D5GDevo
     
  2. willie59

    willie59 Super Moderator

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    Occupation:
    Service Manager
    Location:
    Knoxville TN
    I haven't worked on an NPK breaker before, but I've never seen an "exhaust hole" on a hydraulic breaker either. Could you post some pics of the suspect area?
     
  3. D5GDevo

    D5GDevo Well-Known Member

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    Location:
    Kentucky
    Ok lol. It may be just a vent hole but anyway it has fluid leaking out of it. I'll try to post a pic.
     

    Attached Files:

  4. xr4ticlone

    xr4ticlone Well-Known Member

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    Trusted Adviser to the Construction World
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    My guess (I'm not a mechanic & not overly familiar with NPK) that shouldn't be open. It appears to have threads in it? Could be a place to put air for under water operation? A good hammer shouldn't be hard to fix.

    NPK makes a decent hammer, my biggest beef is with their price of parts and repairs.

    That said, if it's still working I would take it in and have it checked over. Meade or Erb look to be the only dealers in KY. I'd call and talk to both to see if they have a hammer specialist that just works on hammers. A surprising number of dealers are clueless on hammers, even ones who sell them.
     
  5. D5GDevo

    D5GDevo Well-Known Member

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    Location:
    Kentucky
    I check with my local dealer today and he said that fluid leaking out of that vent hole was a sign that the hammer needs servicing, 700.00 Seal kit. WOW. What can you do but order one and get it fixed. Hope it not out of my capabilties to repair.
     
  6. mikebramel

    mikebramel Senior Member

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    Jul 16, 2012
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    Location:
    milwaukee
    Before you order it I would take it apart. Most of the time you're going to need hard parts also if you want to do a complete job. Before you take it apart, be aware of of the charge on the accumulator may cause things to move when you dissasemble
     
  7. xr4ticlone

    xr4ticlone Well-Known Member

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    Occupation:
    Trusted Adviser to the Construction World
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    NPK makes a decent hammer, my biggest beef is with their price of parts and repairs. ;)

    I've never rebuilt a hammer, but I know some are easier than others. NPK, from what I'm told, is NOT one of those easier to fix brands.

    http://read.dmtmag.com/i/726012-september-2016/33?m4=

    Page 35 + (Horrific title to great article on hammers)
     
  8. MrElectric03

    MrElectric03 Well-Known Member

    Joined:
    Jul 12, 2009
    Messages:
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    Location:
    Northern Idaho
    D5GDevo- The plug that is leaking is called a drain passage. It provides a tell tale when the upper seals have blown out which yours have. The hammers are not difficult to disassemble if you have a 1" impact to remove reinstall the tie rods and you will need to use a small port-a-power to remove the sleeves. The biggest thing is knowing what to look for on the internal parts and most people freak out seeing normal wear and will condemn a perfectly usable hammer.
     
  9. Muffler Bearing

    Muffler Bearing Senior Member

    Joined:
    Mar 26, 2009
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    Occupation:
    Truck Mechanic
    Location:
    Colorful Colorado
    Good to know we've got a few guys on HEF building hammers, I just started on them 6 months ago, they are an odd creature indeed, not a lot of manuals or support out there and dozens of brands.
     
  10. Tones

    Tones Senior Member

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    Occupation:
    land clearing contractor
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    Ubique
    I don't know anything about NPK hammers but a outfit I worked for many years ago ran Teledyne hammers. When they did a rebuild they replaced the 4 bolts that go down through the guts. They used a torque multiplyer to tighten, 1000ftlbs if I'm remembering correctly.