Posted by Bobl1958 on July 01, 2019 at 13:18:32 from (68.98.205.31):
I have a 1972 JD 4320 that was my Dad's that has 4800+ hours on a working tach. When we had the farm sale for my Dad in 2006, my Uncle bought the tractor, but really didn't use it at all. Probably 200 hours in 11 years. I finally got it bought early last year.
The trouble I am having is it seems to be heating up. When I first started it, after it sitting for about 6 years and not being ran, was that the waterpump was stuck. So I took the hood off and replaced the WP. I also ended up replacing the radiator with a new A&I radiator, new belts, hoses, and thermostat. Since I had gone to that much trouble, I also replaced the water temp gauge with a new JD gauge.
All seemed well. This summer I put it on a V rake. Just driving down the highway about 4 miles to a field, it seemed to want to run a little warm, about 1/2 way between straight up and the red. That was just pulling the rake in road gear. In the field it was about the same, maybe a needle width cooler. Drove the tractor home last night at about 95 degree air temp, and it seemed to run warm again. When I got home, I immediately checked the block with a infra red temp gun. The block was about 180F. The lower rad hose was about 140F.
I am must wondering if the new gauge is reading wrong, or if something else might be going on. The timing is set on the money. My guess is the temp gauge, but also wondering if the heat gun on the side of the block would be a good reading? Any thoughts? It is a low houred tractor and has really never had to work in it's life. My Dad bought it when it was 2 years old and really never used it much either. Put up hay for a couple of years and then sold the cattle. Used it for drilling wheat was about all after that. Let me know your thoughts. Before and after pics belwo Thanks - Bob
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