• 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!

hydraulics

  1. just-a-mechanic

    Primary Hydraulics 2010 Volvo EC140CL 3,100hrs

    Hey All! I purchased a 2010 EC140CL excavator with 3,100 Hours (confirmed by me with the engine ECU hours) that has low pressure hydraulics. I purchased this because I believed I had the highest chances of getting a good mechanical machine and the price was right. Hydraulic Issues so far...
  2. Skidud

    Case 1840 lift cylinder issue

    When trying to back blade using down pressure, my 1840 (4000 hrs) lift cylinders will occasionally "bounce", as in retract and then spring back. It also acts up when I tilt forward and apply down pressure with the tilt cylinders as well. If I don't apply down pressure with the lift cylinders...
    • Skidud
    • Thread
    • 1840 cylinders hydraulics valve
    • Replies: 0
    • Forum: Skid Steers
  3. K

    SVL75-2 + Snowblower rookie

    Hi all! A few rookie questions about operating our SVL75-2 with a Kubota snowblower. Firstly, I had the hydraulic lines disconnected (and had released the pressure before disconnecting by pushing in the connectors) and they leaked on the shop floor. Is there a standard practice to avoid this...
  4. E

    Ackerman EC230B Excavator Hydraulic Problem

    Hi! First post here - have an old Akerman EC230B excavator and the hydraulics/ joysticks packed up today. Boom up/ down, in/ out and bucket grab/ release are super slow as if there's a lack of oil pressure. Also rotation is slow. Plenty of oil in the system. Machine seems to be tracking...
  5. D

    434E Hydraulics Problem

    I picked up a used 434E a few months ago. It ran great until recently. It was at a job site when all the hydraulics became very slow. Also the travel home was very slow. The engine reaches proper rpm, fluid levels and filters ok. Anyone have an idea what to look for? Is there some ECM...
  6. G

    Volvo EC210LC, Hydraulic problems pump no 2

    Hello everyone. I bought a used Volvo EC210LC excavator, from 2000, which has some problems. !! :-( Maybe you can help. 1. Right belt motor does not respond when stepping on the pedal. However, if you swing / bend slightly with the left joystick, it will pull well with about 25% force. ...
    • GudumH
    • Thread
    • ec210 hydraulics volvo
    • Replies: 46
    • Forum: Excavators
  7. J

    mitsubishi hydraulic lines

    Hey all- I have a Mitsubishi 120 excavator. The hydraulic lines that connect to the tracks in the front are corroded and some are leaking. Im having trouble finding replacements, or someone who can bend new ones because apparently they are metric threads and that is hard to find. Any ideas?
  8. J

    Blade Float 2012 Deere 35D

    All, looking to figure out a way to add Float function to the dozer blade on my new 2012 JD 35D. Do a lot of landscape grading work with our minis towards the end of jobs and float on other machines has always helped to leave jobs looking clean and professional. Our older 2000 Cat 302.5 came...
    • JHead
    • Thread
    • backdrag controls dozer float grading hydraulics mini plumbing
    • Replies: 6
    • Forum: Compact Excavators
  9. W

    CAT Excavator Hydraulics Failure

    2002 CAT 313c CR Problem: Turn key on. I start by jumping at the solenoid. Purrrs like a cat. Had to turn off engine (at the key) as hydraulics don't respond. Repeat this several times until hydraulics work. When they work, they work perfectly. It's as if hydraulics aren't getting signal to...
    • Will Cat
    • Thread
    • 313 314 electric electrical hydraulics key switch
    • Replies: 50
    • Forum: Excavators
  10. U

    Kubota kx121-3 hydraulics issue

    New to the forum! Does anyone have any experience with the hydraulics on a 2009 Kubota kx121-3? I recently purchased my first used excavator and it appears my hydraulics may not be working to their max potential. I first noticed when in fast travel mode (both throttle up and down) I can't quite...
  11. J

    Cat 302.5 Hydraulic Thumb Relief

    Hello, first post here but I've been following along for a while. Very helpful forum! I recently installed a hydraulic thumb on our 2000 Cat 302.5 (4AZ01260) and have been reluctant to use it yet because I think we need to incorporate some form of relief into the system to avoid having the...
    • JHead
    • Thread
    • 302.5 hydraulics mini excavator relief relief valve thumb
    • Replies: 17
    • Forum: Excavators
  12. posrepair2013

    Kubota kx080-3 hydraulics stalling engine

    I am working on a kubota kx080-3 v3307 engine with 8k hours. What's happening is when u are running hydraulics its killing engine u dont even have to be digging if u run a cylinder all the way out of in and hold it for a second engine will stall. It does it when machine is hot or cold. I have...
  13. Deere4430

    310 backhoe loader not working

    I have done a bit of work to this backhoe, I have rebuilt the steering valve, the loader control valves and most recently the pressure control valve (priority valve) all was okay untill I rebuilt the pressure control valve. It needed rebuilt due to the fact that the shim and orfice were stuck in...
  14. 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...
  15. D

    Bobcat S70 hydraulics

    I have a 2016 bobcat s70 that showed up to my shop with a blown engine. Pulled the engine and found a hole in the Piston in cylinder 2. I was able to get parts pretty quickly and rebuild the engine. After installing the engine and letting it run and get up to temp, I shut it down and hooked up...
  16. Monkeywithawrench

    930M HYDRAULIC PUMP COUPLER FAILURE ALSO 938M LOADER

    Last week I got a call from one of my customers. He has a 930M (KTG00960) loader that seems to be a lemon. Around 2500 hrs it was out moving snow for the town. Started cutting out and dying intermittently. Turns out a hydraulic line had chafed through some of the wires for the engine ECM (1...
    • Monkeywithawrench
    • Thread
    • 930m 938m coupling failure hydraulics hydrualic failure no brakes no implements no steering
    • Replies: 14
    • Forum: Wheel Loaders
  17. C

    Hydraulics suddenly stop working

    Hi just wondering if anyone can help I have a case 580 super e that is fairly new to me that all of a sudden lost all hydrolics and steering. Not sure where to start looking for the problem.
  18. Josh L

    John Deere 450D - LC "Weak Hydraulics"

    Hey guys, I have had a complaint from an operator of "weak hydraulics" on this unit, S/N: 1FF450DXEBD914228 but I can't get access to any specs or service info from our local dealer. That's about all the story he could give me, operated it a bit and it feels fine to me but I'm not in it every...
    • Josh L
    • Thread
    • excavator hydraulics service info
    • Replies: 4
    • Forum: Excavators
  19. B

    Cat304ccr 2009 blade lacks power

    I recently purchased this excavator from a cat dealer and I'm just having a few teething issues. The blade will happily move up and down but sometimes lacks the power to lift the machine up. If I move it up and down a few times it will work but it seems to be getting worse. Any ideas are...
    • Bencat304
    • Thread
    • cat cat304 caterpillar excavator hydraulics
    • Replies: 8
    • Forum: Excavators
  20. J

    2002 Case 621D No Hydraulics

    I have a 2002 case 621D loader and while in use one day it just stopped. It will start, idle and rev up fine but it has zero hydraulics. No bucket controls, no forward or reverse, and no steering. The filters have all been replaced, the hydraulic oil level is full. When it first starts it will...
Top