743 block heater

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bobcat743b

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Jun 15, 2019
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I have an external heater that it looks as though its hooked up to the cab heater. don't know if it will warm up the motor, do they make a block heater and if so where would it be mounted, thanks
 
with the engine model number you can research freeze plug block heaters ,they do a good job at warming the coolant which warms the engine around the combustion area. I guess you have a Kubota v-1702 engine. I believe these work much better than radiator hose heaters and magnetic oil pan heaters. although anything is better than nothing as these engines are cold natured. Have you checked to see if all your glow plugs are working?
 
with the engine model number you can research freeze plug block heaters ,they do a good job at warming the coolant which warms the engine around the combustion area. I guess you have a Kubota v-1702 engine. I believe these work much better than radiator hose heaters and magnetic oil pan heaters. although anything is better than nothing as these engines are cold natured. Have you checked to see if all your glow plugs are working?
there is no wiring to the glow plugs. I did buy the bar from bobcat for them and I think I have found the plug wire for them but that's as far as I have gone on them. I have a block heater on my case. really helps a lot. not sure how you would mount a block heater if you remove the freeze plug.
 
there is no wiring to the glow plugs. I did buy the bar from bobcat for them and I think I have found the plug wire for them but that's as far as I have gone on them. I have a block heater on my case. really helps a lot. not sure how you would mount a block heater if you remove the freeze plug.
If you have a cab heater, the 743 parts book calls for a tank style engine heater that goes in the heater circuit. It will heat the whole engine, it works on convection, and they are generally easier and less involved to install.
The freeze plug types have a rubber surround that expands with a bolt, similar to the old thermos bottles. The biggest problems with them is leakage due to improper installation, uneven heating due to location, and clearance issues which is why there are so many different applications.
The lower radiator hose has great heating efficiency, but requires complete draining of the cooling system and cutting a hose that generally has a spring in it to keep it from collapsing. Depending how low it hangs, it can also be vulnerable to snagging from below, or an improper secured cord being drawn into the fan.
 
If you have a cab heater, the 743 parts book calls for a tank style engine heater that goes in the heater circuit. It will heat the whole engine, it works on convection, and they are generally easier and less involved to install.
The freeze plug types have a rubber surround that expands with a bolt, similar to the old thermos bottles. The biggest problems with them is leakage due to improper installation, uneven heating due to location, and clearance issues which is why there are so many different applications.
The lower radiator hose has great heating efficiency, but requires complete draining of the cooling system and cutting a hose that generally has a spring in it to keep it from collapsing. Depending how low it hangs, it can also be vulnerable to snagging from below, or an improper secured cord being drawn into the fan.
In case you do not know glow plugs have almost no resistance if you look at them with a meter ,If you see more that 5 ohms replace it, and they could be put on a push button switch at activates a relay which you should tie the glow plugs to . I guess you will need to fuse it with about 20 amp fuse or a little larger from the battery.(this is in case the glow plug stuff it gone or a non- original key switch without the heat position)
 
If you have a cab heater, the 743 parts book calls for a tank style engine heater that goes in the heater circuit. It will heat the whole engine, it works on convection, and they are generally easier and less involved to install.
The freeze plug types have a rubber surround that expands with a bolt, similar to the old thermos bottles. The biggest problems with them is leakage due to improper installation, uneven heating due to location, and clearance issues which is why there are so many different applications.
The lower radiator hose has great heating efficiency, but requires complete draining of the cooling system and cutting a hose that generally has a spring in it to keep it from collapsing. Depending how low it hangs, it can also be vulnerable to snagging from below, or an improper secured cord being drawn into the fan.
I found a heater on the floor by left side by the engine. plugged it in and it started to get warm but the hoses didn't. when I took the line lose there was no coolant in it. not knowing much about bobcats a friend of mine told me I had to hook up the quick attach fitting on the left side of the seat so from what your saying my problem is me not understanding how it works but I think I can see now how to does it now. thanks for the info. freeze plug sort of scared me some. I have found what I think is the power line to the glow plugs so hopefully I can fix it to. surely don't like to start diesel motors in cold weather unless I can get some heat to it, I always appreciate people giving me there comments as it helps me to understand what I'm doing and believe me sometimes I surely don't. Thanks
 
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