YM2610 Water Pump/Cooling System Question

[mtimber1972]

I have done a water pump replacement and total sytem flush and just wanted to confirm direction of flow for the system. Set-up when I got the tractor was high-side (outflow) into the block, and low-side (inflow) from the bottom of the radiator. I have heard conflicting descriptions of flow direction and just wanted to confirm before I put this thing back together. Thanks!

 

[284 International]

I'm not sure what you're saying is what I understand, so here's how mine work:

From the bottom of the radiator, a hose goes to the inlet of the water pump. The outlet of the water pump goes to the engine block. Then the hose on top of the engine goes to the top of the radiator.

 

[clemsonfor]

Cool water goes into the water pump from the bottom of the radiator into the waterpump, then through the block into the waterpump to the top of the radiator.

 

[mtimber1972]

Thanks all! That's how I have it connected and you confirmed all is right. Now for the overheating - from all I've heard my next step is a head gasket. I've ruled everything else out.

 

[winston1]

Are you sure? Are you getting water in oil, oil in water, bubbles in radiator or overflow tank, white smoke? If not, I would make sure all bases are covered on the cooling system before going head gasket. Just my opinion.

 

[mtimber1972]

no mixing of oil/water at all and no white smoke. main symptom is bubbling in overflow tank caused by steam blowing back from radiator cap relief. I've removed/flushed every part of the cooling system and replaced water pump and belt...

 

[284 International]

Does that bubbling occur as soon as the engine is running? If the head gasket is blown, it will show overpressure in the radiator as soon as the engine is running. If it does not, but instead takes some time to get hot, I would investigate whether the radiator is obstructed, internally and externally.

 

[Brake Weight]

I just had to flush mine with straight muraitic acid. Took a couple of flushes to get most of the buildup out. I read online, from a boiler makers site, that an eggshell thickness could reduce the cooling effect (of industrial sized coolers) by up to 50%. So a fine amount in the radiator would severely hinder the cooling ability.

 

[careyo63]

Does that bubbling occur as soon as the engine is running? If the head gasket is blown, it will show overpressure in the radiator as soon as the engine is running. If it does not, but instead takes some time to get hot, I would investigate whether the radiator is obstructed, internally and externally.

Should be able to rent a radiator cap with a Pressure gauge attached from a Auto parts store. Your find out Quick if it pressures up cold.