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Farmall & IHC Tractors Discussion Forum
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IH 240 mystery lower block-cock

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Dave D

11-01-2004 10:25:28




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I noticed coolant seeping from a cock on the side of the lower engine block, maybe 6 inches above oil pan and near the carb. This tractor has a yellow rubber hose clamped onto that cock, running underneath the tractor into a little yellow cannister (appears to have had 2 wires exiting it, now cut off) with another rubber hose running up into a similar cock on the right side of the block. Looks like a "closed loop" to me and I twisted the cock shut on account of the drips. Am I going to blow the engine? Or will the wrong politician win the election tomorrow? What engine system is this? Did it go to a mower or some other absent implement? Thanks, gentlemen.

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K.B.-826

11-01-2004 18:58:17




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 Re: IH 240 mystery lower block-cock in reply to Dave D, 11-01-2004 10:25:28  
Definetly a tank-style coolant heater. 240's, and all IH gassers, are pretty good cold-starters, if you've got a good battery in them. Unless you plan on using the tractor on -20 below zero mornings, I would suggest eliminating the heater. Just replace the cock on the left side of the block with a new one, and attach a short piece of hose, to make it easy on yourself when it comes time for regular coolant changes every two years. I'm guessing that someone has added a tee at the fitting for the temperature guage sensing bulb to add the fitting for the tank heater outlet hose (on the right side). Just remove that fitting and install a pipe plug. Remember, you are working with pipe threads here, and you must use a thread sealer, such as teflon tape, or you will get leakage past the threads. If you choose to replace the tank heater, they are commonly avalible at any auto parts store, in many shapes and sizes. Replace both of the 5/8" heater hoses with new ones, and run that hose from the left side around the back of the engine instead of underneath, so it doesen't get caught on somthing.

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Dave D

11-02-2004 10:41:53




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 Re: IH 240 mystery lower block-cock in reply to K.B.-826, 11-01-2004 18:58:17  
Thank you again, K.B. The depth and breadth of your tractor knowledge is impressive and always helpful. I read all these accounts of museum-quality restorations going on all over the world and I am in awe. Wish I had the basic knowledge it takes to keep this old loader starting/running and not dripping, grinding, and missing but I didn't grow up near tractors. (Oh yes, and I wish the Tooth Fairy would bring me a set of "new" filled rear tires that match!)

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K.B.-826

11-02-2004 19:04:11




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 Re: IH 240 mystery lower block-cock in reply to Dave D, 11-02-2004 10:41:53  
Thank-you for your kind words, I'm just glad I can help. Keep working at that 240 and you will be amazed at how fast you pick up on this stuff. They're one of the best tractors to learn on, as they are still small and easy to work on, but yet have many modern ideas and a fairly complex hydraulic system.



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williamf

11-01-2004 10:42:02




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 Re: IH 240 mystery lower block-cock in reply to Dave D, 11-01-2004 10:25:28  
Most IHs have a drain cock about where you describe to drain the block when changing coolant or, in the old days, letting the water out when it was going to freeze.
What you describe sounds like some sort of block heater for cold weather starts, although I must admit that, living in the Sunny South as I do, I've never seen one. Wm



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Dave D

11-01-2004 16:23:13




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 Re: IH 240 mystery lower block-cock in reply to williamf, 11-01-2004 10:42:02  
William, block heater circuit had not occurred to me but I think you are right. This old 240 probably spent 30 years mowing highways in New England before being retired to private use. The canister is about half the diameter of a coke can and has these two clipped wires coming out of one end. Shutting off that cock would not cause damage? I guess it doesn't because I ran the tractor for about an hour today and nothing blew up or stopped running. Thanks.

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Harold Hubbard

11-01-2004 18:02:12




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 Re: IH 240 mystery lower block-cock in reply to Dave D, 11-01-2004 16:23:13  
If you don't need the heater you can take the whole thing off, hoses and all. Originally the cocks were probably meant to drain the block, so you should leave them in. Make sure they don't leak after the hoses are removed.



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Dave D

11-02-2004 10:24:43




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 Re: IH 240 mystery lower block-cock in reply to Harold Hubbard, 11-01-2004 18:02:12  
Any thoughts on the voltage of that heater? Would it have run off the battery (6V) or been a plug-in 110VAC? The clipped leads from the (?) heater canister looks small like headlight guage. Since I am in the snow belt & need this to start on a winter's night to move snow banks, maybe that block heater is a good idea and I might try to resurrect it. Thanks for the thoughts.



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K.B.-826

11-02-2004 19:47:47




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 Re: IH 240 mystery lower block-cock in reply to Dave D, 11-02-2004 10:24:43  
110 volts AC



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