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hydraulic

  1. G

    Bobcat s650 hydraulic oil temp out of range high

    I recently purchased a 2014 bobcat s650 and it started giving me a code M0721 saying hydraulic oil temp out of range high. It only has about 1,020 hours. I was wondering what could be the cause to this? Or would I have to change the $700 sensor
  2. W

    MSS Malfunction?

    I've got a 2002 CAT Excavator (grey market). Having intermittent problems with hydraulics not responding at all. I've been told that it might be the result of the MMS system not working and shutting hydraulic system down. Can anyone provide info on this system? Can it be fixed, replaced...
  3. B

    Deere 310G Backhoe

    Hey guys, Having an issue with my 310G backhoe. There is hydraulic fluid getting into my rear end, which is filling up and coming out the breather vent. I replaced the three seals on the emergency brake housing, but its still acting up. After replacing the seals, I put fresh fluid in the rear...
  4. G

    Need hydraulic control valve help on 70s Ford 4500/750 backhoe

    Hello all. This is my first post to Heavy Equipment Forums. I'll appreciate any information, advice or help you can offer. BACKGROUND: I have searched this site and a number of others, but have not found specific information. However, I KNOW many others have had the same type of problem that...
  5. shawnseveras

    replacing old hydraulic fan on cat 246 skid steer

    so long story short i am replacing the old hydraulic fan motor and assembly. i will be installing an electric motor in its stead. i will be disconnecting the offload line part number- 148-8385 and putting a plug there. then i am disconnecting the inflow line for the hydraulic fan motor and...
    • shawnseveras
    • Thread
    • cat cat 246 caterpillar cooler electrical fan fan blade hydraulic hydraulic help skid steer
    • Replies: 59
    • Forum: Skid Steers
  6. shawnseveras

    Cat 246 skidsteer-replacing top seal on hydrolic fan motor.

    so i recently found out about this forum via google search. and i found out that the seal atop the cooling fan motor could be replaced. i have a cat 246 and we were having a problem with the fan motor spraying oil all over the place when it reached a certain temperature. once pinpointed i did a...
    • shawnseveras
    • Thread
    • cat cat 246 hydraulic hydraulic movement motor radiator skid steer
    • Replies: 19
    • Forum: Skid Steers
  7. D

    Volvo BL70 Front bucket very slow moving

    2003 Volvo BL70 backhoe has been running good and today the front bucket rotates and lifts up and down, but very very slow. I suspect that the servo pump has to be replaced. Looking for maybe alternatives I did not think of? Duane
  8. W

    Case 580SE having hydraulic fluid changing problems

    Got a friend with a Case 580 Super E and the hydraulics worked fine til he changed the fluid and filter, now he has no hydraulics. He has pressurized the hydraulic tank and bled all lines and has slight movement in hydraulics. Any possible solutions or ideas would be appreciated.
  9. B

    Case 580SK sudden loss of hydraulics

    Hi to all. Firstly, thanks for this incredible source of information. Nevertheless, I've gone through the threads but cannot seems to find something relating to my issue. Yesterday I was setting up my backhoe stabilisers and for once went to the full extension. As I hit full extension, the...
  10. chandler starling

    Hitachi EX-230-5

    Good afternoon gentlemen, Tractor reference is 1999 Hitachi 230lc-5 S/n ANT400040 this tractor as about 7000 hours on it. It has always been a good machine other than being rough (compared to newer). Well taken care of and used daily. I noticed today that the hydraulic oil is very dark...
  11. A

    Massey Ferguson 1980s MF80 Hydraulic issue

    Hi i am working on a 1980s Massey Ferguson MF80 Backhoe and the Backhoe will not lift up and pushes hydraulic fluid out of the top seal (Images attached). I also can not find parts or any manuals on this Backhoe any help would be greatly appreciated. Was also told it could be o'rings needing...
  12. R

    Bobcat 463 hydraulic problem

    Hey guys I have a 2006 bobcat 463 I blew a hose to the tilt my guys ran it damn near out of fluid got the new line in did both for the tilt now the machine drives fine and will tilt down to lift the front tires off the ground bucket wont curl up past flat and the arms wont lift is there a way...
  13. A

    Boom hydraulics replacement - twin line or two singles?

    Hey guys, long time lurker, first time poster. Anyway, I'm getting ready to re-run the boom hydraulic lines on my 1989 Grove AMZ-66 Manlift, as the originals have finally seen too much sun (polymer braid is showing at the elbows) and could soon fail. My question is this: Why should I pay extra...
  14. I

    Discontinued Hydraulic Rams

    Does anyone know of any way i can find a list of discontinued hydraulic rams? Thanks in advance.
  15. P

    Cat 268B drive/steer problem

    I'm working on a 2009 cat 268b with poor drive and steer function. When the machine is started it pulls in reverse against the parking brake. When the brake is released it want to roll all over the place like the joystick is not in neutral. The machine rolls and steers but has a huge delay...
    • pat86
    • Thread
    • 268b cat drive hydraulic skid steer sterr
    • Replies: 7
    • Forum: Skid Steers
  16. Andrew Navarrete

    Komatsu PC210LC-6E Very Slow Hydraulics

    Hello, I just recently purchased a beater of a machine. It s a Komatsu Excavator PC210LC-6E with a 6BT cummins. When I firsted picked it up it was working fine a little slow but it worked. Now she barely moves has no power to dig push spin or walk. I had a mechanic take a look and we measured...
  17. D

    PC128uu-1 hydraulics gone haywire

    Hello all, new to the forum, but just wondering if I might be able to get some diagnosis help? I have very specific symptoms that I'm hoping someone smarter than me will be able to pinpoint straight away... I have a Komatsu 2000 model PC128uu-1 which out of the blue stopped working properly at...
  18. D

    Replacing boom hydraulics in 934d-9 gradall?

    Hello Everyone, I own a 1999 Gradall 934D-9. The hydraulic lines are leaking inside the boom. Could someone give me some advice on how to access them? Any help would be very appreciated. Thank you very much, Dexter
  19. M

    thumb only works in one direction

    Takeuchi 135 min-excavator thumb will just work in one direction. Changed the lines and it will work in the other direction. Can toggle the joystick switch up and down and you can here the solenoid cycle each time but will only operate in one direction. Did over power thumb with log held in...
    • matava
    • Thread
    • auxiliary diverter valve hydraulic hydraulic control valve thumb
    • Replies: 7
    • Forum: Excavators
  20. F

    hydraulic pump question

    I have a John Deere 410g. My pump was rebuilt last year because we (almighty ex didn't do research and blah blah bkah) didnt understand how the parking brake would engage intermittently. Thanks to the forums help I got that fixed by simply adding transmission fluid. So...the pump was rebuilt...
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