1175, No Heat in cab

IHr190 · Feb 12, 2012

Three questions.First, how can I get the heat to come on in cab? The valve on the manifold seems to be turned all the way "out", and hoses are warm. Second, is there another valve to sstop coolant flow? The blower works fine, but only cold air. The control cable that pulls in and out like a choke, seems to be stuck. It is stuck in the "out" position. Does this stop, or start the heat? I dont have an owners manual yet. Third, where would I find the location of the cab serial number? Thanks. Rob

retired farmer · Feb 12, 2012

If it is like a 2090 Case, if I remember right, it has been several years since I did one tho, you have to take the very top of the cab plate off and the heater valve should be on the left side of the air conditioner unit. The control cable comes up thru the ceiling of the cab. Your cable is probably rusted. If it will move at all you could pour penetrating oil down the cable from the top end and maybe get it freed up. The valve could be stuck closed. You are right, the cable knob is pulled out, heat is on. Could be too the valve on the engine could be plugged too. More than likely the cab valve is bad or the wire clamp has slipped off the cable center wire. I would check it first. I think the cab serial number is stamped somewhere on the inside of the cab.

Case Nutty 1660 · Feb 12, 2012

you say the hoses are warm,,, how warm is the temp guage showing? also if the pressure cap on the radiator is not up to snuff it will not push coolant up to the core well try covering the grills to stop air flow thru the rad run enegine at high rpms for a while and see if you get any heat will post you a pic of the serial plate for the cab cnt

IHr190 · Feb 12, 2012

The temp gauge is the only gauge that doesnt work. The hoses didnt seem all that hot, but it was really cold (here) yesterday, and the tractor had not been working that hard. All it did was spread two loads of manure. I never thought to check the radiator cap. This week, I am going to take the cab roof panel off, and get after both the cable, and that second valve. You guys are a wealth of knowledge, and I appreciate it.

Case Nutty 1660 · Feb 12, 2012

here are the three cab serial locations I have first is the early style with no padding on the upright RH post this one is on a 71 770, next is a 73 1175 and the last is a 77 970 the last two are near the floor by the entry door, cnt

DKase · Feb 12, 2012

In the winter time my 970 will not heat till I cover up the radiator, and blow snow for 10 minutes or so to get the engine up to temperature. Once up to temp it will cook me out of the cab. Make sure the engine is at least 180 degrees.

Anonymous-0 · Feb 12, 2012

Pretty sure that is right engine has to be warm(hot) enough for the thermostat to open before it circulates water thru the heater, otherwise the water pump is bypassing cold water.

mEl · Feb 13, 2012

(quoted from post at 20:14:19 02/12/12) Pretty sure that is right engine has to be warm(hot) enough for the thermostat to open before it circulates water thru the heater, otherwise the water pump is bypassing cold water.

Make sure the thermostats are in good condition as they set up the difference in pressure across the system that "pushes' the coolant through the hoses. The flow comes out the water manifold and flows back in the housing into the lower hose flow behind the Inj. pump. On those tractors most of the heater cores are plugged with dust and all kinds of debris on the outside, while that does not hinder coolant flow it sure does kill heater air flow and must be cleaned by removing the cab top. I have seen some that the insulating foam from the cab lid comes off and completely obstructs air flow. mEl

IHr190 · Feb 13, 2012

CaseNutty, my 1175, though currently white, was desert sunset from the factory. The guy who had it before me, installed an interior kit and the RH post has foam on it. Im going to get nosy later and look for it. Thanks. Rob

jogl · Feb 13, 2012

Like Retired Farmer said you need to check the push pull cables. Those things can fool you in a lot of different ways (don't ask). Like Mel said, clean out the heater core, even if it doesn't look like it needs it.

For both of the above you need to take the top cover off of the cab, might as well do both while its off. If it rains where you farm make sure that you don't cheap out on the sealant when you put the top back on (again, don't ask).

Good Day,
JP.

1175, No Heat in cab

IHr190

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retired farmer

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Case Nutty 1660

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IHr190

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Case Nutty 1660

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DKase

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Anonymous-0

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mEl

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IHr190

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jogl

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