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Yesterday's Tractor Forums
  1. J

    IH 574 3-Point Hitch Problem

    It does seem a bit like magic but is is working better. There are so few mechanics around that will touch an old tractor -- it is comforting to know that you folks are willing to share your knowledge.
  2. J

    IH 574 3-Point Hitch Problem

    The hydraulic fluid level is full and appears clear; it has not been changed in a while, but all other functions are working well. The tractor does have remote hydraulic outlets at the rear; I think the control for that is a 3 position control lever just under the 3pt levers? As I move this...
  3. J

    IH 574 3-Point Hitch Problem

    FEL has a separate loader valve assembly that is "fed" by two large neoprene hoses. One hose goes to the area where the hitch and pto levers are (the Multiple Control Valve assembly?) and the second goes under the tractor back by the 3 point hitch. The current operation of the 3pt hitch feels...
  4. J

    IH 574 3-Point Hitch Problem

    The 3-point hitch on my gas IH 574 has become erratic. I have a brush hog attached and it seems there is little or no hydraulic power to the hitch unless I activate the front end loader (lift, lower or tilt -- all loader actions make the 3 point hitch work normally!). If I set the mower at the...
  5. J

    Tractor Won't Shut Off

    SOLVED -- the diode assembly arrived today; this solved the problem. Thanks again to all who helped. Jim B
  6. J

    Tractor Won't Shut Off

    Yes, this is my alternator. Thanks to all of the inputs I've received, I think I finally understand what's happening. I spent $10 and ordered the diode harness assembly which should fix the problem. I'll also try to trace the wiring to pin 1 to see how this was originally supposed to work --...
  7. J

    Tractor Won't Shut Off

    GREAT - sounds like a simple fix. I'm really grateful for all the experience and knowledge available in this forum; it really helps keep these old tractors operating.
  8. J

    Tractor Won't Shut Off

    I started the tractor, turned the ignition switch to the OFF position (tractor continued running) and then disconnected the wiring harness from the alternator -- tractor immediately stopped. It looks like the alternator is feeding voltage back into the ignition circuit when the switch is off...
  9. J

    Tractor Won't Shut Off

    The tractor was running fine last summer but developed the won't stop symptom this spring. Nothing has been changed or replaced so something must have shorted, opened or broken. I believe I have an internally regulated alternator -- is the anti-feedback diode in the alternator? Is there a way...
  10. J

    Tractor Won't Shut Off

    IH 574 serial number 6572 which makes it a 1972. I think I may have discovered the problem -- the ignition switch has 3 positions (off, run, start) with three inputs (battery, ignition & Starter solenoid). When the switch is in the Off position, I THINK the ignition is supposed to be grounded...
  11. J

    Tractor Won't Shut Off

    That's interesting. My idiot light had been disconnected for some time; I think this no shutoff problem occurred just after I re-connected the spade connector to the light. However, the no shut-off problem now persists whether or not the alternator idiot light is connected. Now that I have a...
  12. J

    Tractor Won't Shut Off

    I have an IH 574 Gas tractor that runs great but recently developed a problem where it will not stop running when I turn off the key! It will, however, stop when I disconnect the electrical line to the fuel shut-off solenoid. I checked the ignition switch and that appears to be OK. Once the...
  13. J

    IH 574 Thermostat Retaining Ring

    That should work -- great idea! Thanks a lot.
  14. J

    IH 574 Thermostat Retaining Ring

    I"ve been working on the cooling system for my IH 574 gas tractor. I believe I"ve solved the overheating problem by replacing the missing cooling shroud around the fan but found that the tractor had been running with no thermostat. Now that I"m able to keep it cool, I"d like to put in a 180...
  15. J

    IH 574 Thermostat

    I've found the PN for a 574 diesel thermostat is 3059676R91 -- does anybody know if the gas version uses the same part?
  16. J

    IH 574 Overheats

    Thanks to everyone who has provided their experience and ideas. Tractor is running cooler since cleaning the radiator (flushed with vinegar and carefully cleaned the outside fins) but still overheats when working hard at air temperatures above 70 deg. I've completed the job of mowing my 8...
  17. J

    IH 574 Overheats

    I have no Fan Shroud -- after some searching, it appears the missing item is "402200R1 Housing" --I will contact my local Case dealer when they get back from the long Labor Day weekend to see if they can get the part. Possibly this missing shroud is the underlying cause to my problem...
  18. J

    IH 574 Overheats

    Somewhat rusty but not terrible. Weather is cool now so am able to finish current job, but I'm going to pick up new hoses and a new 180 deg thermostat -- will give it another vinegar flush when I replace all the old equipment. I'd like to turn this old girl into an all-weather (at least an...
  19. J

    IH 574 Overheats

    I did the "sock test" and the fan pulled the sock tight against the radiator so apparently the flow is good. [b:8c2c70cd12]There is no fan shroud -- Does anyone know if the gas 574 with the 4-blade fan had one originally??[/b:8c2c70cd12]
  20. J

    IH 574 Overheats

    OBSERVATION & QUESTION: The cooling core for the hydraulics on my 574 is mounted about 1" in front of my engine-radiator and right across the middle -- the hydraulic cooling core obstructs air flow to at least a third of the engine radiator. Is this typical or unique to the 574?
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