Coyote machine
Super Member
- Joined
- May 4, 2009
- Messages
- 7,641
- Location
- Southern VT
- Tractor
- 22 SANY SY 50U, '10 Kioti DK 40se/hst KL-401 FEL, loaded tires, KB-2485 bhoe, Tuffline TB160 BB, Woods QA forks, MIE Hydraulic bhoe thumb & ripper tooth, Igland 4001 winch, & GR-20 Log Grapple. Woods BBX72" Brush Mower. Diamondplate aluminum canopy
Thanks for the complement! I appreciate that.
Brad, it seems you're on the right track with the KSB, especially since you've already done a lot of what I was suggesting- checking wires, grounds, etc.
So, I think you definitely want to locate the sensor that is connected into the KSB circuit so it can be eliminated as a possible cause of your troubles.
The service manual page said it is located in the intake manifold. The sensor is in effect until the intake manifold has 40degrees C= 104degrees F. So it is NOT a coolant temp the KSB responds to; it IS an AIR temp it is reading, SO if your thermostat is delaying the engine coming up to temperature it could affect the intake temperature too. Find that intake sensor and remove it for inspection. It should have a range of temp it works at and you could test it to see if it is within specs. OR your dealer could give you another one and a thermostat to exchange and note what changes. If you do both, do one at a time to see which has what effect. As far as running near hot when having worked the tractor I would suggest changing out the t-stat and see if anything changes. Have you ever changed the coolant in the radiator? If not, it may be time to do so. Coolant naturally breaks down over time and should be changed every couple of years. It can turn to almost sludge like consistency and does not provide adequate cooling and corrosion protection after a lot of hours of use. This could also dull/delay the sensor readings the KSB unit is looking for to tell it how much fuel to deliver when coming up to temp in colder weather.It is hard to read the wiring diagram, and when I blow it up to readable size it is too blurred to see clearly. But I think I get the jist of it. There is a 15amp fuse in the circuit, so verify it is good, and clean. Keep taking notes, especially of ambient temp and such like you did today- it will help you keep focused and narrow down exactly when the machine does what.
And it sounds like you have a good tractor that has some nasty bugs that need to be worked out so you can get it to being what it should be- reliable for your use.
I would keep on your dealer about a list of ALL the issues you just mentioned to get them to remedy them under warranty. This is their job.
The temperature thing I believe is tied into the situation. You say it tends to run hot when working it hard. This is not what I would call normal. And your persistent slew of wiring issues is not good, nor normal either. For the wiring I would take a serious look at your battery negative cable and where it attaches to the frame and clean it by removing the bolt at the frame, removing any and all corrosion, grease, dirt etc. Then shine up the ground lug at the frame, coat it's bolt with copper anti-seize and then spray the frame/lug/bolt with battery protection spray after tightening the bolt real tight. Do the same to both the pos and neg at the battery, in addition to using the felt washers available in any auto/tractor store. Then have someone grab the negative cable and move it around while you crank the engine to see if there is any effect on gauges/lights/ etc. If there is any fluctuation, replace the entire cable with new lug and battery post end. Cables do corrode internally, especially with intermittent issues like you have in your system.
Brad, it seems you're on the right track with the KSB, especially since you've already done a lot of what I was suggesting- checking wires, grounds, etc.
So, I think you definitely want to locate the sensor that is connected into the KSB circuit so it can be eliminated as a possible cause of your troubles.
The service manual page said it is located in the intake manifold. The sensor is in effect until the intake manifold has 40degrees C= 104degrees F. So it is NOT a coolant temp the KSB responds to; it IS an AIR temp it is reading, SO if your thermostat is delaying the engine coming up to temperature it could affect the intake temperature too. Find that intake sensor and remove it for inspection. It should have a range of temp it works at and you could test it to see if it is within specs. OR your dealer could give you another one and a thermostat to exchange and note what changes. If you do both, do one at a time to see which has what effect. As far as running near hot when having worked the tractor I would suggest changing out the t-stat and see if anything changes. Have you ever changed the coolant in the radiator? If not, it may be time to do so. Coolant naturally breaks down over time and should be changed every couple of years. It can turn to almost sludge like consistency and does not provide adequate cooling and corrosion protection after a lot of hours of use. This could also dull/delay the sensor readings the KSB unit is looking for to tell it how much fuel to deliver when coming up to temp in colder weather.It is hard to read the wiring diagram, and when I blow it up to readable size it is too blurred to see clearly. But I think I get the jist of it. There is a 15amp fuse in the circuit, so verify it is good, and clean. Keep taking notes, especially of ambient temp and such like you did today- it will help you keep focused and narrow down exactly when the machine does what.
And it sounds like you have a good tractor that has some nasty bugs that need to be worked out so you can get it to being what it should be- reliable for your use.
I would keep on your dealer about a list of ALL the issues you just mentioned to get them to remedy them under warranty. This is their job.
The temperature thing I believe is tied into the situation. You say it tends to run hot when working it hard. This is not what I would call normal. And your persistent slew of wiring issues is not good, nor normal either. For the wiring I would take a serious look at your battery negative cable and where it attaches to the frame and clean it by removing the bolt at the frame, removing any and all corrosion, grease, dirt etc. Then shine up the ground lug at the frame, coat it's bolt with copper anti-seize and then spray the frame/lug/bolt with battery protection spray after tightening the bolt real tight. Do the same to both the pos and neg at the battery, in addition to using the felt washers available in any auto/tractor store. Then have someone grab the negative cable and move it around while you crank the engine to see if there is any effect on gauges/lights/ etc. If there is any fluctuation, replace the entire cable with new lug and battery post end. Cables do corrode internally, especially with intermittent issues like you have in your system.
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