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Davide
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Cooling System
03/25/13 at 01:56:20
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hi everyone, my name is Davide and i live in Perth, Western Australia.
i have just been bitten with the Willy bug.
i am in the process of restoring my early 1950 CJ3A.  
i went to flush the cooling system but to my surprise no coolant was coming out of the drain thingy on the side of the engine block next to where the oil dipstick enters the block.
i ran a coolant flush 3 time and the colour went from red mud to a light brown colour however still no coolant through the drain thingy.
i am thinking there must be a blockage somewhere. i would rather not remove the head, and hopefully explore other avenues.
Any suggestions?
Thank you for your help
i have attached a couple of photos of the old girl!
  
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Macgraham
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Re: Cooling System
Reply #1 - 03/25/13 at 02:17:16
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maybe try to unscrew the drain valve from the block. I think it is probable that the rust and dirt over the years has plugged the valve. You may be able to just clean it up and reuse it. Most of all Welcome to the 3a site. Be sure to ask anything you like, I'm sure someone here will be glad to help. The guys here have helped me rebuild my 3A completely.Mac
« Last Edit: 03/25/13 at 02:21:17 by Macgraham »  
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1955CJ-5
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Re: Cooling System
Reply #2 - 03/25/13 at 02:23:38
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If you happen to have removed the radiator you might also want to remove the water pump. Removing the pump will give good access to the water jacket for a good flushing. The water jacket in my '51 was so full of stuff that it had to be hot tanked twice and still there was crud to remove. Be careful with the water pump bolts, use penetrating oil and let it soak. The long bolt passes through the pump and is in contact with the coolant and may be thoroughly rusted...
  
1955 CJ-5, A friend for 55 years....1951 CJ-3A, a new addition. 1929 Model A Ford Closed Cab Pickup...
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maximushuntermus
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Re: Cooling System
Reply #3 - 03/25/13 at 02:56:43
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After you pull the drain plug, try and stick a magnet the size of a pen or so in the hole and sometimes that will pull the rust debris out enough to get it flowing.....
  
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athawk11
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Re: Cooling System
Reply #4 - 03/25/13 at 03:52:26
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As others have suggested, remove the drain valve from the block.  This may be enough to get it flowing.  If not, you could try a blast of air.  This may help get the crud flowing.

Tim
  
2-1949 CJ3A 
1-1946 CJ2A
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