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  1. L

    IH 300U - carburetor

    That is the correct original carb for a 300U. Rebuilding is super simple and as stated above a good soaking in gunk and some fine wire through the small openings to make sure they are clear, I use a torch cleaning set for that. 30 years ago or so I got rid of all that stuff in line, the...
  2. L

    New old guy needs help 300U knock

    Hi all, I was a member here a while ago but life managed to pull me away but I'm back and could use some help. I've got a 300U that I've owned at least 40 years or so, great machine that I have run hard and maybe put away wet too many times. Anyway the other day driving down the road 4 hi...
  3. L

    New old guy needs help 300U knock (update)

    Well for certain I will check that first if it's that easy to see, Thanks! Oh and yes it has IPTO and T/A. This post was edited by lmmare on 08/04/2023 at 12:34 pm.
  4. L

    New old guy needs help 300U knock (update)

    Using the screwdriver listening method there is no doubt now that the knock is coming directly behind the clutch area. The live PTO was mentioned before as a maybe problem and with the use I've been giving it I could believe it. So my question now is will I have to split the tractor to get into...
  5. L

    New old guy needs help 300U knock (update)

    come on now don't be spoiling my fun!!! I bought a clutch for this 15 years ago looks like I'll be getting around to changing it and all those leaky seals!
  6. L

    New old guy needs help 300U knock

    Now that is something that I've had happen a few times as my socket for the ball is very worn and allowed the pan to be bent in as you describe. I have had the socket spaced out with washers for years so that wouldn't happen anymore, but it was the first thing I checked. This post was edited by...
  7. L

    New old guy needs help 300U knock

    This is a work tractor run pretty well every day, I'd find it hard to believe it has any carbon build up, but I won't say it doesn't.
  8. L

    New old guy needs help 300U knock

    Thanks that's a trick I haven't thought of in 30 years or so , I'll be giving that a try tomorrow!
  9. L

    New old guy needs help 300U knock

    Thanks I will try that tomorrow, I have been using the PTO pretty hard for the last year or so running a beltek Auger, that would help explain why the noise is louder past the t/a
  10. L

    New old guy needs help 300U knock

    All looks normal
  11. L

    New old guy needs help 300U knock

    I would say no, the volume seems to stay the same at any point.
  12. L

    New old guy needs help 300U knock

    Oil pressure/level good, knocked home, knocking now parked. Knock follows engine speed. Getting it diagnosed is what I'm trying to do here. I'm in West Texas, closest old tractor mechanic besides me is probably 600 miles away.
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