Hi All
I am indebted to Alexisferos in his submission on cooling system tests done on a B7100. (address below)
My tractor B7200 was loosing water and it turned out the fan belt was touching and eroding a hose and spreading the water and I could not find the leak. When doing something else I noticed the damaged hose.
This got me thinking about how vulnerable these old engines are with no temp. supervision and there are a few bad stories on this and other sites about meltdowns when water runs out or the radiator is blocked and cooling fails. I understand that on later models the horn blows if water temp. exceeded set levels.
So I purchased a digital thermometer (ebay or alibaba) for all of 5 dollars. It was shipped from China to Dublin and took about one month.
These things are available at trivial prices but you need to look at voltages, ingress protection IP rating, mounting and probe location.
I installed the 3mm stainless steel probe (thermocouple) at the plug no 140 shown and located the LED temporarily on the bonnet near the steering wheel. See Photo. 12 volt power supply was taken from the Key Switch.
The system works well and for 5 bucks it is probably a good investment, however, I intend to improve the system by purchasing a digital thermostat with relay which can be set to close contacts at preset temp. This can be used to blow the horn. A 12v unit is on order (China for about 10 dollars and after Christmas)
More modern tractors (and cars) have automatic shutdown if temps. are exceeded and there may be a solenoid shutdown on more modern D950 engines. If anyone is aware of a shutdown solenoid for this engine I am interested.
I will report on installation of the latest Mark 2 10 dollar upgrade!!
http://www.orangetractortalks.com/forums/showthread.php?t=16639&highlight=thermosyphon
http://www.ebay.co.uk/itm/12V-Vehic..._Measurement_Equipment_ET&hash=item3ce4c6c17f
I am indebted to Alexisferos in his submission on cooling system tests done on a B7100. (address below)
My tractor B7200 was loosing water and it turned out the fan belt was touching and eroding a hose and spreading the water and I could not find the leak. When doing something else I noticed the damaged hose.
This got me thinking about how vulnerable these old engines are with no temp. supervision and there are a few bad stories on this and other sites about meltdowns when water runs out or the radiator is blocked and cooling fails. I understand that on later models the horn blows if water temp. exceeded set levels.
So I purchased a digital thermometer (ebay or alibaba) for all of 5 dollars. It was shipped from China to Dublin and took about one month.
These things are available at trivial prices but you need to look at voltages, ingress protection IP rating, mounting and probe location.
I installed the 3mm stainless steel probe (thermocouple) at the plug no 140 shown and located the LED temporarily on the bonnet near the steering wheel. See Photo. 12 volt power supply was taken from the Key Switch.
The system works well and for 5 bucks it is probably a good investment, however, I intend to improve the system by purchasing a digital thermostat with relay which can be set to close contacts at preset temp. This can be used to blow the horn. A 12v unit is on order (China for about 10 dollars and after Christmas)
More modern tractors (and cars) have automatic shutdown if temps. are exceeded and there may be a solenoid shutdown on more modern D950 engines. If anyone is aware of a shutdown solenoid for this engine I am interested.
I will report on installation of the latest Mark 2 10 dollar upgrade!!
http://www.orangetractortalks.com/forums/showthread.php?t=16639&highlight=thermosyphon
http://www.ebay.co.uk/itm/12V-Vehic..._Measurement_Equipment_ET&hash=item3ce4c6c17f
Attachments
-
47.7 KB Views: 466
-
90.2 KB Views: 356