Hey guys trying to restore a Farmall C. The tractor has a temp guage in the dash but the wire has been cut long ago. But I for the life of me cannot find where the probe for the guage is supposed to go. I assumed that it went in the head but can't find a port. This tractor also has a water pump so I looked around that. The best thing I can come up with is someone switched the head on me unless there is something I'm Missing any other ideas would be appreciated. Also looking for a nice grille for this tractor. Thanks guys
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(quoted from post at 22:28:55 03/17/10) Hey guys trying to restore a Farmall C. The tractor has a temp guage in the dash but the wire has been cut long ago. But I for the life of me cannot find where the probe for the guage is supposed to go. I assumed that it went in the head but can't find a port. This tractor also has a water pump so I looked around that. The best thing I can come up with is someone switched the head on me unless there is something I'm Missing any other ideas would be appreciated. Also looking for a nice grille for this tractor. Thanks guys
My super c guage screws into the top water outlet right in front of the head
Dustin
TractormanNC
Member
There is or should be a 1/2 inch pipe port on the right side of the thermostat housing for the temp gauge bulb. If the water outlet was swapped for an earlier one, it may not have this port. The water temp gauge is in the dash. The temp gauge for the touch control was mounted on top and at the front of the touch control lever quadrant
ScottyHOMeY
Well-known Member
On a Super C the front end would go in the upper outlet from the head to the radiator. On a C, it *might* go there, but more likely it will be in the casting on the return inlet on motor end of the lower hose.
Where is your gauge located? And does your tractor have the Touch Control hydraulics? If the gauge you're replacing is up by the levers to operate the Touch Control, it's for hydraulic temp as haas pointed out, not engine coolant, and is a whole different matter/fitting etc. for that gauge the fitting is a rectangular plate that also serves a a retainer for the filter screen behind it.
Where is your gauge located? And does your tractor have the Touch Control hydraulics? If the gauge you're replacing is up by the levers to operate the Touch Control, it's for hydraulic temp as haas pointed out, not engine coolant, and is a whole different matter/fitting etc. for that gauge the fitting is a rectangular plate that also serves a a retainer for the filter screen behind it.
400Dtractorman
Member
the C's had a thermosyphon cooling system without a thermostate. The amp gauge goes in the dash. Some people put pumps on C's. I just don't know where they mounted the Gauge. I'll check my C to make sure i'm right. The last 500 C's had the 123 engine so they might have put thermostates and gauges on them, just not sure.
400Dtractorman
Member
the C's had a thermosyphon cooling system without a thermostate. The amp gauge goes in the dash. Some people put pumps on C's. I just don't know where they mounted the Gauge. I'll check my C to make sure i'm right. The last 500 C's had the 123 engine so they might have put thermostates and gauges on them, just not sure.
It is a temp guage it is located down by your feet there is the temp guage and an ammeter down by the feet. I ran back out to the shop and the only plug I have is in the lower radiator pipe but that is where the drain is. I would assume that the temp probe would have to be in the top of the head or in the casting on the front of the head to get the hottest water. Maybe my front casting got changed. If it has a water pump is it supposed to have a thermostat? All I have is a piece that bolts to the head and adapts it to a radiator hose.
ScottyHOMeY
Well-known Member
You're thinking in the right direction. I posted ways down on a question about a water pump on a Super A, which can be done, but pointed out that the 113/123 thermosiphon is so efficient that, regardless of upper or lower placement of the temp probe, if a water pump were added, you'd have to work the snot out of the tractor to the pint of abusing it to ever get it up to operating temperture.
That said . . . a couple of points. Yes, you're right, with a pump and thermostat, the logical location for the temp probe would be between the head and the thermostat at the upper outlet. That's where it was on the SuperC. Going back to the efficiency of the thermosiphon (no pump, no stat) I always pondered the value of a temp probe at the coolest point in the system, when it was placed inline in the lower hose. I suppose it had some value in the days when people drained water in cold weather rather than pay for antifreeze (or used alcohol for antifreeze which boiled away faster than the wter), in which case it would let you know if you had boiled away enough coolant that the coolant could no longer flow over the upper neck, causing you to overheat for lack of circulation.
With a pump and thermostat, such a setup (probe in the lower hose) could also alert you to a stuck stat or other problem.
But it seems obvious your tractor had a gauge in place at one time or another. It will be in either the upper or lower castings between the head/block and radiator hoses. IF there is NOTHING in either one (which would be consistent with your thought that a part may have ben swapped out), look on each casting for a boss, a thick spot, that could be tapped out to take a pipe-threaded compression fitting for the probe. If that's all you can find, you'll need to tap a hole for it in one or the other, depending on pump-thermostat-or-not in one or the other.
One of the basic differences between the C and SuperC is the height of the radiator (taller on the SuperC) so that the upper elbows are of a whole different geometry, and one from a C will not fit in a SuperC. Going back to your idea about maybe a part being swapped out, we can'
t eliminat the possibility that your tractor had a probe (either upper or lower location) but that the casting had to be replaced for some reason, and the wire was just snipped off, in whichi case, you just need to tap a hole for the fitting in whichever location to get an input to the gauge.
HTH and let us know how you make out.
That said . . . a couple of points. Yes, you're right, with a pump and thermostat, the logical location for the temp probe would be between the head and the thermostat at the upper outlet. That's where it was on the SuperC. Going back to the efficiency of the thermosiphon (no pump, no stat) I always pondered the value of a temp probe at the coolest point in the system, when it was placed inline in the lower hose. I suppose it had some value in the days when people drained water in cold weather rather than pay for antifreeze (or used alcohol for antifreeze which boiled away faster than the wter), in which case it would let you know if you had boiled away enough coolant that the coolant could no longer flow over the upper neck, causing you to overheat for lack of circulation.
With a pump and thermostat, such a setup (probe in the lower hose) could also alert you to a stuck stat or other problem.
But it seems obvious your tractor had a gauge in place at one time or another. It will be in either the upper or lower castings between the head/block and radiator hoses. IF there is NOTHING in either one (which would be consistent with your thought that a part may have ben swapped out), look on each casting for a boss, a thick spot, that could be tapped out to take a pipe-threaded compression fitting for the probe. If that's all you can find, you'll need to tap a hole for it in one or the other, depending on pump-thermostat-or-not in one or the other.
One of the basic differences between the C and SuperC is the height of the radiator (taller on the SuperC) so that the upper elbows are of a whole different geometry, and one from a C will not fit in a SuperC. Going back to your idea about maybe a part being swapped out, we can'
t eliminat the possibility that your tractor had a probe (either upper or lower location) but that the casting had to be replaced for some reason, and the wire was just snipped off, in whichi case, you just need to tap a hole for the fitting in whichever location to get an input to the gauge.
HTH and let us know how you make out.
gene bender
Well-known Member
Thats where the probe goes is in the water pump and you dont need a thermostat. Just make sure when you get a guage you get one long enough . I have a good used one almost new if interested.
So I talked to a friend of mine who his family has over a hundred farmalls. They have 3 Farmall C's He said one has the probe in the water pump one has it in the top of the head like an H or M and one is just like mine it has a guage but is cut off and does not have a port to put the probe in. So now I'm not sure what to think guess I'll wing it Thanks guys
Jim Becker
Well-known Member
This isn't all that complicated, but these responses sure make it look that way. You can see most of the answer by looking in the Parts Catalog. You should have one. If not, there is one online at the CaseIH web site.
- Standard configuration for a C, there was no water pump.
- Optional gauge for thermosiphon systems is shown on the page with the optional radiator shutters (first illustration in the chassis section). The sensor end of the gauge goes into the inlet elbow, in the orientation and position in the diagram.
- The optional water pump is illustrated in the engine section of the catalog.
- The engine fan illustration includes 2 different water outlets. One is for thermo-syphon systems. The other, for tractors with a water pump, includes a thermostat. The illustration does not show the connection for the gauge. [size=14:9e546ea815][b:9e546ea815]The solid black area in the illustration of that outlet is where the sensor should be installed (just below the thermostat).[/b:9e546ea815][/size:9e546ea815]
- There were 3 different gauges used on the C, each listed on the radiator shutter page. The gauges had different temperature ranges, depending on what other equipment was installed.
- By the way, there were 500 tractors built with 3 1/8 sleeves/pistons. But they were not the last 500 tractors.
- Standard configuration for a C, there was no water pump.
- Optional gauge for thermosiphon systems is shown on the page with the optional radiator shutters (first illustration in the chassis section). The sensor end of the gauge goes into the inlet elbow, in the orientation and position in the diagram.
- The optional water pump is illustrated in the engine section of the catalog.
- The engine fan illustration includes 2 different water outlets. One is for thermo-syphon systems. The other, for tractors with a water pump, includes a thermostat. The illustration does not show the connection for the gauge. [size=14:9e546ea815][b:9e546ea815]The solid black area in the illustration of that outlet is where the sensor should be installed (just below the thermostat).[/b:9e546ea815][/size:9e546ea815]
- There were 3 different gauges used on the C, each listed on the radiator shutter page. The gauges had different temperature ranges, depending on what other equipment was installed.
- By the way, there were 500 tractors built with 3 1/8 sleeves/pistons. But they were not the last 500 tractors.
My Super A does not have a temperature gauge. In the process of my "restoration", I purchased the upper radiator inlet (head outlet) for a Super C/Super A1 from Wengers. It is larger in diameter than the original and a little taller (can be cut off if needed), will not have water pump or thermostat, just a gauge plugged into the outlet from the head. If it works I'll let you know in several months (maybe years) when I finish the thing. If something goes wrong, I'll put it in the lower one, which had a plug in it.
ScottyHOMeY
Well-known Member
Just got home from work an dlooking around. Jim Becker's suggestions are excellent. And the parts catalog comes back to my point. If you do not have a water pump your tractor would hav come with the lower elbow with extra plugs in it, one of which would be removed to accept the fitting for the temp probe. If you have shutters, this would have been part of the shutter package. Still there were the optional elbows available without the shutter kit with the extra plugs. The beauty of it al is that the plain Jane elbow with only a drain hole in it for a down pipe or plug, was cast leaving the booses I referred to, which could/can be tapped out to accept and NPT fitting for a probe.
If the tractor was delivered with a water pump, the probe would go in the upper elbow. It, again, if it hasn't already been tapped to take the NPT fitting, can be.
What do have there? Water pump or no? If so, it's entirely possible somebody added the water pump and snipped off the temp lead when they found no place to hook it up. If that's the case, look your upper elbow over for a cast-in flat spot to tap out for it.
If the tractor was delivered with a water pump, the probe would go in the upper elbow. It, again, if it hasn't already been tapped to take the NPT fitting, can be.
What do have there? Water pump or no? If so, it's entirely possible somebody added the water pump and snipped off the temp lead when they found no place to hook it up. If that's the case, look your upper elbow over for a cast-in flat spot to tap out for it.
I found a upper water outlet at a junk yard with the port for the temp guage after further thought the hood is gone so I am womdering if something fell on it and broke that piece and it was replaced with no port. The hood then was left for dead because it served no purpose anymore
On the CaseIH website, you click on United States under Americas.
At the top, hover over Parts & Service until the menu appears. Select Search for Parts from the menu.
On the page that appears, click on the words "right here" at the bottom of the white area. This starts the parts search engine.
Type "Farmall C" in the search field, and click on the Search button. The results will list Farmall C and Farmall Cub. Obviously you know which one you want.
Expand the Farmall C listing. Go down to Chassis and expand that. The first listing there is the one that Jim Becker was looking at.
At the top, hover over Parts & Service until the menu appears. Select Search for Parts from the menu.
On the page that appears, click on the words "right here" at the bottom of the white area. This starts the parts search engine.
Type "Farmall C" in the search field, and click on the Search button. The results will list Farmall C and Farmall Cub. Obviously you know which one you want.
Expand the Farmall C listing. Go down to Chassis and expand that. The first listing there is the one that Jim Becker was looking at.
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