• 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!

Search results

  1. T

    Cat 302.5 Hydraulic pressure relief valve adjustment

    Your suggestion; using the book procedure to temporarily boost main relief pressure to diagnose is smart. My advice was to gauge up first and have a baseline, a before picture that can help you return the machine to original settings if needed. We all know a guy, or been guilty ourselves, of...
  2. T

    Cat 302.5 Hydraulic pressure relief valve adjustment

    5000 hours on a mini excavator… she’s basically at the end of service life and needs a major overhaul or rebuild. -I’m not as familiar with Cat equipment, but an optional feature on this machine was a check valve on the boom circuit. I don’t know the detailed operation of this valve, but it’s...
  3. T

    Cat 302.5 Hydraulic pressure relief valve adjustment

    At work I frequently use a Deere 17g (actually we run a pair of these) and they both have barley enough power to lift themselves up. However, put the throttle to full rabbit and use the bucket curl to help, you can manage to lift the machine up just fine. Then i will drop the blade on the other...
  4. T

    Deere 50D Adding diverter valve

    First, what is the GPM requirement of the mower head? The auxiliary circuit or thumb on the machine might not be big enough to for a mower. We have a Deere 50 with a thumb. Don’t recall the hardline pipe size, but the quick attachment point might be be a -10 size (guess). It’s possible the mower...
  5. T

    JLG 340aj Update, hydraulic pump failure, brakes

    Does anyone have advice about a mobile equipment filter cart? Their screen filter probably captures the big stuff. And I’ll make sure to replace that a few times… I want to refill the machine with new oil and have a filter cart ready to go. Cycle all the cylinders and drive motors to move the...
  6. T

    JLG 340aj Update, hydraulic pump failure, brakes

    Here is an update on the manlift. Originally the brakes were dragging and the only way to move the machine was to rev the motor to full speed and travel the machine forward and reverse. It would operate slightly better with cold hydraulic oil, but it would quickly warm up and the problem would...
  7. T

    2003 Isuzu NPR White Smoke Persists and Timing Marks are WRONG (I think)

    If you had the injectors rebuilt, did you remove the injection pump for a rebuild as well? I’ve had harmonic balancers slip and cause the timing marks to be off. Either the bonded rubber fails or their key-way was damaged. Have you completely removed the air from the injection lines? How long...
  8. T

    Takeuchi TB 016 2003 info...

    Worked on one, operated one, abused one and finally the engine failed after years of service. My advice. Be descriptive on the issue and that helps narrow down the issue together. If my memory is correct: The lever lock system is pilot pressure lock out. No track travel and no digger functions...
  9. T

    TL130 Fuel Stop Solenoid

    Very nice. Compact track loaders see heavy vibrations transferred when operating on hard surfaces. If you have a temperature sensor in the upper radiator house coupling. Replace it when it’s looking iffy. It was the source of 2 machines having the triangle warning shut down. Be safe, keep the...
  10. T

    TL130 Fuel Stop Solenoid

    After finding wiring fairly damaged on my TL10 project, went back to the basics. The alternator is going wild, pushing 18.5 bolts at the battery. We bought the digital copy of the service manual. It’s amazing, it’s very detailed. Make sure your searching your correct serial number and some...
  11. T

    TL130 Fuel Stop Solenoid

    When you find a bunch of non-factory zip ties and butt splice in the belly pan mud… you know someone with expert repair skills has been limping the machine along after each major breakdown. Cheers to all the electrical gremlins out there.
  12. T

    TL130 Fuel Stop Solenoid

    I’m on my way to sort out electrical gremlins in the TL10 today. If I find something fun… I’ll post a picture of the issue(s).
  13. T

    TL130 Fuel Stop Solenoid

    You’re not alone when it comes to chasing electrical issues on machines. We have a TL 10 where the float switch is working properly for the first minute of operation (cold only, restarts do not fix the issue). The arms raise property, but the moment you use the joystick to bring the arms down...
  14. T

    JLG 340AJ brakes stuck on, hydraulic issue

    Lesson to be learned here for the guys and gals who spin wrenches; This machine has taught me a few important lessons. 1: JLG has exceptional support staff on when you call them. This machine was refurbished before we got it, at that time the hour meter is reset. So the pump, motor and machine...
  15. T

    JLG 340AJ brakes stuck on, hydraulic issue

    Finally got around to looking into this. Both high pressure relief valves (possible combo check valves) have green o-rings but are in good shape The charge pressure relief valve assembly was also checked. There are minor scratches along the body. The only o-ring was the cap to pump body sealing...
  16. T

    Takeuchi TL 140 safety relay

    This brings back memories. Had a TL140 with this same issue. Used to kick the panel and work the poor machine hard the rest of the day. However; I remember doing relays and checking fuses and doing all that. Eventually discovered the battery terminals were loose. That helped significantly reduce...
  17. T

    Isuzu NPR 5.2 4hk1 engine swap

    In case someone search’s this in the future. You will need the Isuzu IDSS software, computer and cables. -Each injector has a flow rate number. The numbers need to be taken directly off the injectors or if you’re lucky, the tag with all 4 injector is still on the valve cover. -There is an engine...
  18. T

    Isuzu NPR 5.2 4hk1 engine swap

    I’ll try to keep the backstory short… 2013 build year Isuzu motor lost a bottom end bearing and the oil analysis confirmed the failure. A used motor and transmission was found, it’s from the same year as the truck. I swapped the used engine and mated transmission into the truck. Turned the key...
  19. T

    Cat 314C, not making adequate heat.

    Maybe…. On the machines we have with air conditioning, there is a valve to shut off coolant flow to the cabin heater core. Even if you’re not running air conditioning, it’s nice not to bring hot coolant into the cabin during hot summer days. However, it sounds like engine temperatures are still...
  20. T

    JLG 340AJ brakes stuck on, hydraulic issue

    It’s easy to spin those in and out. That’s the certainly worth trying. Machine is outside getting ice cold. I’ve got other busted junk to fix at the moment. I’ll be back on the JLG soon! Updates asap.
Top