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Did you figure out what was wrong? Just yesterday my steering went out and the symptoms are: you turn the wheel and the tires turn slightly in that direction and then are pulled back towards Straight even though the steering wheel remains turned in whatever direction you turn the tires.
I doubt that it is air because it happened all of a sudden. And, it doesn’t act like air cavitating the hydraulic action, because it starts and then gives back. That is indicative of blow by or a leak of the pressure. It does not appear to have a separate hydraulic pressure system and basically the only two parts to the system looks like the steering box and the cylinder.
The thermostat from Affordable was a 72°C. I got it in and bush hogged 6-8” grass for an hour or so. It never made it to 80° on the gauge. I am still having the problem with lack of power in 1st gear high-high (main-creeper). It has a hard time starting a climb on slight inclines while the bush hog is engaged. It wouldn’t climb a steep hill with the bush hog disengaged in 1st high-high or even 3rd low-high. But, the big problem is that the steering went out. I am going to start a new post on that. I am still pretty gay that it didn’t run hot though.
That is exactly how Affordable explained it to me. I had never really thought about how the system worked. I basically thought the thermostat was just to get the engine up to operating temp & the size/flow design kept it there unless some outside force (load/clogged radiator) caused it to rise. Affordable also said that these engines should never need a coolant reservoir because they are designed to run under boiling conditions. If they boil over, something needs fixed. I ordered my parts & can’t wait to get it put back together.
I did the exhaust leak test and today but it did not show anything. So, I pulled the radiator and it had bent fins and some plugging issues. I straightened out the fins as best I could which took about two hours and then flushed it with the water hose on a flat spray nozzle. By the end of it I could see daylight through almost the entire radiator. I decided to check the thermostat and when I pulled the housing off found that there was no thermostat in it, like you said could possibly be. Unfortunately I broke off one of the bolts in the housing. I tried that trick of welding on a nut to the stud like they do on exhaust manifolds. It took me about six tries but I finally got it out. I am ordering a new thermostat and gaskets tomorrow morning and hopefully this will help in the heating issues.
Thanks Bob, that seems pretty simple. I got discouraged and left it parked this weekend and went fishing instead. I have only replaced one head gasket before and that was on my 8N. Once I pulled the hood, it was easy to pull off. This one seems more intricate.
I don’t have a radiator pressure tester. I will have to look into that. I do get a puff of smoke when accelerating under load and would call it gray/white. It was low on coolant, below the fins, the day after the sub freezing day that it ran hot. It has coolant above the fins from last weeks bush hogging where it ran really hot. The other thing I noticed is that it wanted to stall when turning it up hill while bush hogging in 1st gear high/high. I just attributed it to being an older tractor with power loss issues. It goes anywhere in any of the low gearing options. I just bought the tractor last year and mostly used it for moving rock/gravel/dirt with the bucket. Most of that work was done in low gear.
