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excavator

  1. A

    Komatsu pc50 slow movements

    Hi everyone, I own a 2008 Komatsu pc50. When I move the dipper, the boom lifts very slowly, but when I slightly release the dipper joystick the boom lifts just fine and fast. Is there any way to make the boom and dipper work simultaneously? There are hold valves on the boom and dipper cylinders...
    • Ale98
    • Thread
    • excavator komastsu pc50 mr-2
    • Replies: 5
    • Forum: Excavators
  2. M

    Komatsu PC28uu starts intermitently

    Hi all - looking for some help before I start tearing down the machine. Machine sometimes will fire right up. It goes through the starting sequence - two beeps with all four indicator lights, then just the oil pressure and battery light, then turn it to start, and boom - start. Sometimes...
  3. H

    Boom Cylinder Extends But Will Not Retract

    Cat 304CR (NAD00987) I've got a boom cylinder that will extend but will not retract. In other words, boom goes up but won't come down. When I try to boom down, I hear noise from the relief valve, but the cylinder only moves about 1/4". I don't have a way to test flow, but I have adequate...
    • Howey Matt
    • Thread
    • 304 304c 304cr boom boom cylinder cat caterpillar cylinder excavator relief valve
    • Replies: 34
    • Forum: Compact Excavators
  4. D

    2005 200clc Fuel issues

    2005 John Deere 200clc 6.8l 6068HT059 after running for hour to hour and a half excavator started to lose power under load. When this happens is I get out and check it has sucked the primer pump plunger down tight and the machine can’t get enough fuel under load. The longer it goes on the worse...
    • Derrick Raney
    • Thread
    • 200clc 6.8l 6068ht059 excavator fuel issues john deere power loss
    • Replies: 13
    • Forum: Excavators
  5. M

    Volvo 160d coolant bottle pressure

    Has anybody ever experienced the coolant bottle on top of the motors in 2013 Volvo 160d over pressurizing? I’ve been told these machines have a known injector cup issue and that could cause this. No codes present. Machine runs strong with no startup issues.
    • Md360s
    • Thread
    • 160 excavator head gasket injector cup volvo
    • Replies: 0
    • Forum: Excavators
  6. D

    How long to clear 5 acres?

    I have 5 acres that is wooded and is mostly 3-8inch trees with some decent size trees in the mix. I'm renting an E50 11,000lb excavator with a hydraulic thumb for 7 days here in a couple weeks & I'm wondering if this will be enough time to clear it? I'm just putting them in a pile and going to...
    • DK13
    • Thread
    • bobcat clearing excavator land clearing
    • Replies: 16
    • Forum: Excavators
  7. J

    case 1280 B Excavator

    Need used or new Left Front wheel idler for case 1280 B track hoe anyone have one they are parting out, or know where I might find one, any help appreciated.
  8. M

    KX91-3 pressure relief valve

    I recently bought a kubota kx91-3. It is plumbed out to the stick for attachments. I bought an aftermarket thumb but do not know if I need a pressure relief valve or not. I called my local dealer and he didn’t seem to know what I was talking about. Any guidance is greatly appreciated.
    • M_Sweeney
    • Thread
    • excavator hydraulic control valve kx91-3 thumb
    • Replies: 2
    • Forum: Excavators
  9. F

    Hitachi Ex350H-5 getting coolant in oil

    Hi everyone, this is my first time posting. I'm a young farmer up in northern Alberta. I am not the most mechanically minded person but I try to do any mechanicing I can before hiring someone. This excavator was my first heavy equipment purchase. I bought it last year and I plan on using it to...
    • FarmerToby
    • Thread
    • coolant in oil ex350 ex350h-5 excavator help hitachi john deere troubleshooting water pump
    • Replies: 5
    • Forum: Excavators
  10. JPD_

    Used John Deere 160lc leaking bug time

    Hello there ! I'm new to the forum and a new owner of a used JD 160 excavator. Before I call the company that sold it to me I'd like your opinion on something. I can do "maintenance" but I'm not a mechanic and my first problem is that I don't even know the name of the part that is leaking...
  11. A

    Excavator 320 Cranks but won't start.

    Hello everyone. I have a 320 Cat excavator with the following PIN: CAT00320LZBN02630. The machine was working normal, and out of sudden it won't start. The current active fault code on the machine's monitor is: 5874-9. I don't have an access to the service manual, SIS or ET. Thanks in...
  12. JamesPC35mr-2

    PC35MR-2 2007 Slow functions/ 3500 PSI

    Hi, and thanks for the help in advance. Been on here for a while and this is my first post, hopefully it’s in the correct place. I have a 2007 PC35MR-2, I have owned this machine for 4 years and use it only for personal use. I’ve been dealing with the issue the entire time, and manage my way...
    • JamesPC35mr-2
    • Thread
    • compact excavator excavator komatsu loss of power mini excavator pc35 pc35mr-2 hydraulic track komatsu slow hydraulics weak weak functions
    • Replies: 6
    • Forum: Compact Excavators
  13. Olori Joshua

    AEC not working on 330C DKY02164

    The AEC switch button when pressed only reduce the engine speed to 1300 rpm when it is on mode 2 when it's left idle and dial switch is in position 5 up. It does lower the speed by 100rpm when on mode 1 but won't raise the rpm back to what it was when the levers are operated. please I need...
  14. Jake Erickson

    Komatsu PC220-6 Year Long Ongoing Power Problem PLEASE HELP

    Anyone with experience please help. I’m at a loss right now, I have a pc220-6. Bought it with a power issue, was hoping it was simple and a year later I’m out of ideas. Rebuilt the pump, 1st time didn’t put in new pc valve, valve was bad and blew apart when adjusting, put in a new valve, general...
  15. G

    Hyundai robex 80cr-9a showing low def and in reduced power mode

    Hello my father is looking for some help or advice on his 2016 Hyundai Robex 80cr-9a mini excavator. It has recently gone into reduce power mode and he cannot even get it out of the hole that it’s in. Yes called several mobile equipment services around and the soonest one can get is Monday. It...
  16. H

    Bucket Shims or gasket or what???

    The various joints on the excavator arm and bucket attachment of my 13.5K Lbs 2013 Hyundai excavator have these shims with tabs. They fill like cellulose gasket material. They are about 1/16" thick. One shown below I found warn out. What are these called?
  17. H

    Final Drive Motor on One Side Bogging Down Engine - Cat 304cr

    I just replaced both final drives on this machine. It solved my issue on one side (caused by a failed final drive) but I'm still having a problem with the other side. Basically, when I engage the final drive on that side, the engine bogs down and the hydraulic pump whines like it's under...
  18. B

    How to check the pin part number for excavator ripper

    I already know the ripper part number like 3340505. how could I see the pin part number by sis?
  19. B

    John deere 450D lc low fuel rail pressure

    I have a john deere 450D with 13200 hours. Iv been fighting issues with 1239-1 code. I have changed filters / overflow valves checked all screens all lines presure at injection pump at idle is around 37 or so hard to tell because it jumps around so much ! And I don't know if that's normal...
    • Brad93
    • Thread
    • 1239-1 450d excavator fuel hitachi john deere pcv presure wiring
    • Replies: 5
    • Forum: Excavators
  20. B

    Hitachi UH181 1986 help

    Hi, new user of the site. I have a little collection of older machines growing on my property. The heaviest of which being a 1986 Hitachi UH181. Since moving it up the very steep grade while dragging a 20,000lb rubber track carrier behind it 2 years ago; it has sat under a pole barn. Started it...
    • BCOG
    • Thread
    • 400 excavator help hitachi uh181
    • Replies: 25
    • Forum: Excavators
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