International 464 question

MWP · Feb 4, 2020

I have a 464 International tractor and wondering if someone can tell me what the cap is under the seat? Thanks

Paul swpa · Feb 4, 2020

I'm working on a 464 diesel right now (well off/on for last year anyway). Have the seat off and everything as it is a three point hydrolic issue. Going to have to take the top off the case again to get to the valving inside. Didn't immediately recall a cap in there,then remembered the breather on a plate I already have off for adjustments. Could be what your looking at. Paul

showcrop · Feb 5, 2020

What is a "cap" to you?

JimB2 · Feb 5, 2020

Hi, are you describing the part that looks like a mushroom on top of a plate? That is the breather/vent for the hydraulic housing.
There is also a pressure switch that sticks up under the seat with one wire on it that is the pressure sensor for the trans/diff lube oil that will cause a light with the gear symbol in top middle of the dash
to come on.

Do you have the manuals for your 464 as there is a download for them?

Texasmark1 · Feb 5, 2020

I had a 1974 gasser, bought in 1978. Had just bought my farm and this was my first tractor to amount to anything......not really farm equipment experienced at the time.

I locked up the hydraulics one day and had to get at the service valves, hoping that was where I'd find the problem....was in luck. I do not recall having to pull the cover off the top. I recall a plate on the lower right side or lower rear of the tractor, maybe 3"x8" and under this cover were the pressure relief valves and maybe a few more things. Do not recall draining any sump. Half a dozen items to my recollection. My problem was that I broke a spring on one of the valves when I hit the implement that was jammed against my draw bar, causing it to very abruptly dislodge with full pressure on it....all best as I can recall. Never had the top off the H-D area.

Paul swpa · Feb 5, 2020

Thanks Texasmark1, This tractor was opened up about two winters ago for drifting three point, hiccuping, and the park brake needed renewed which is down inside there too. They had it working fine I'm told, but when they brought it over to us for the summer I could hear a squealing sound when it came up the road (about 3-4 mile run from their place to ours). Said something to them right away as the remote lever would some times get bumped into a pressure position (it's in a bad location as far as I'm concerned). Reply was "oh that's the new pump. Mechanic said would would whine a little." I told them that's not a pump the hydraulics are under pressure! Only took them six months to realize I was right, so here it sets til I get time to figure it out. I really wish they would have let me help the first time so I would have a better idea what they did to it! Paul

P.S. all the check valves and poppets are in side so the top has to come off to get at them. I'm thinking a broken spring, clogged orifice, or sticking equalizing valve.

Texasmark1 · Feb 7, 2020

Sorry that I'm no help. Whine to me could be sucking air. I had a whine develop in a tractor of mine and as it aged the whine got louder. In short, the steel hydraulic feed hose from the sump to the hyd. pump was connected via a rubber hose adapter which had cracked, letting air in at the pump inlet. Other clue was the loader operation got slower and slower, sometimes took minutes from start up till loader would move....not that way when new. Replacing the hose and burping, restored normal loader operation and got rid of the whine it developed.

Tx Jim might help you with ideas on what makes hyd. systems (in general) whine.

Paul swpa · Feb 7, 2020

I'm usually fairly good on hydraulics, just have to get it straight in my head how everything is setup on this one (between the books and studying it) and I'm getting slower at thinking anymore. The only time the noise goes away is when the three point lift arms are going up, any other time it has the pressure type sound, similar to when a remote lever doesn't unlatch when the cylinder reaches the end of its stroke. And the three point arms are still drifting down when it sits, even with nothing hooked up. Biggest problem is just getting a big enough block of time to work on it without having to run do something else and forgetting where I'm at.

Thanks, Paul

MWP · Feb 18, 2020

thanks so much. You nailed it. I wasn t sure if the mushroom cap was a fill port for something or not. Thanks again for you help

MWP · Feb 18, 2020

No I do not have a manual. I love to download it if possible. Thanks, mike

International 464 question

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