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- May 27, 2007
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Alright guys, Im not sure how many of you know what I do as an occupation, but I'm in sports field management. Along with my normal duties of managing the fields, I am entrusted with all the maintenance of all the equipment we use. I have 7 years experience with this equipment, as I was hired on as an assistant mechanic for a top 10 golf course when I was 15 years old. However from time to time I get stumped, and with this one Im just not sure where to go.
I just finished a $7000 overhaul of the hydrolic system and drive train in this mower, and I don't want to be guessing on what the causes of the small problems are right now after having my boss spend so much on this mower in the last week.
A little background on the mower, its a Toro 4000D Groundsmaster, roughly 14ft cutting area between three decks, powered by a Kubota 4 cylinder, mechanically injected, turbocharged diesel engine. The layout of the mower puts the engine at the very back of the frame, with the cooling system being the only thing behind it, sucking its air in from behind. The hydrolic system's oil cooler is pre radiator mounted and its BIG. I had all kinds of problems with this thing overheating today, and it wasn't even very hot here. I had to watch the temp gauge like a hawk, could only mow for about 8 minutes and then stop, open the hood and let it cool for about 3 minutes, and repeat all day long. The rate at which the temp would rise and then fall after being stopped and opening the hood was just crazy. You could literally watch it go up and definitely down.
I blow and wash the radiator and cooler twice a week, so it can't be plugged, and that fan is blowing air over the engine like crazy so its not the fan clutch. Does this sound like a bad thermostat or water pump?
I also know that the hydrolic cooler is getting extremely hot, and possibly its overheating the air before it can pass through the radiator, but I don't have the slightest idea as to why the hydrolic system would be running so hot.
Any ideas? Any input would be appreciated as I just don't want to go throwing a bunch more money into this thing.
I just finished a $7000 overhaul of the hydrolic system and drive train in this mower, and I don't want to be guessing on what the causes of the small problems are right now after having my boss spend so much on this mower in the last week.
A little background on the mower, its a Toro 4000D Groundsmaster, roughly 14ft cutting area between three decks, powered by a Kubota 4 cylinder, mechanically injected, turbocharged diesel engine. The layout of the mower puts the engine at the very back of the frame, with the cooling system being the only thing behind it, sucking its air in from behind. The hydrolic system's oil cooler is pre radiator mounted and its BIG. I had all kinds of problems with this thing overheating today, and it wasn't even very hot here. I had to watch the temp gauge like a hawk, could only mow for about 8 minutes and then stop, open the hood and let it cool for about 3 minutes, and repeat all day long. The rate at which the temp would rise and then fall after being stopped and opening the hood was just crazy. You could literally watch it go up and definitely down.
I blow and wash the radiator and cooler twice a week, so it can't be plugged, and that fan is blowing air over the engine like crazy so its not the fan clutch. Does this sound like a bad thermostat or water pump?
I also know that the hydrolic cooler is getting extremely hot, and possibly its overheating the air before it can pass through the radiator, but I don't have the slightest idea as to why the hydrolic system would be running so hot.
Any ideas? Any input would be appreciated as I just don't want to go throwing a bunch more money into this thing.