Ford 3600

Lazio · Sep 30, 2020

I am replacing water pump on my Ford 3600 tractor. Now that I have it apart, is there a way to flush and clean out block without having to put back radiator?
Or would it be wise to put radiator back and then flush it all out then

Janicholson · Sep 30, 2020

Plug off the lower radiator hose, and put a hose on the upper spigot pointing up above the head and valve cover. Filling this with just above warm vinegar (not the mild stuff) and let it sit
for a day. I would then drain that out and flush it with water. The fact that it is not running is not the best, but doing this will allow a later flush to be more effective, and it is
cheap. Jim

Steve@Advance · Sep 30, 2020

If you have the water pump back on, put the lower hose on, pull it up higher than the water pump, tie it off so it won't fall down.

Then either take the thermostat out, or disconnect a heater hose, or remove a plug where the heater hose would connect, or remove the bypass hose, something to allow water to freely pass through the engine.

Hang the garden hose in the lower rad hose, turn it on a medium flow, start the engine and bring the RPM up to a mid level.

Let the engine run with the hose running. When the water has run clear for a bit, it is flushed. Just be careful not to let the new pump run dry.

How sludged is the block? If it is severely rusty to the point sludge has built up in the bottom of the water jacket, no amount of flushing will get it all out. If it has freeze plugs, and the sludge is built up to the plugs, be ready for them to start failing. The sludge is corrosive.

If it has freeze plugs, and you use any kind of flush chemical, good chance it will start a plug to leaking. If they are accessible and you have the time, now might be a good time to do a preventive replacement.

David G · Sep 30, 2020

I would have flushed it good before changing pump.

Mike M · Oct 1, 2020

Most tractors also have a block drain plug. I'd remove that drain plug and then flush it out with a hose until you see clear water.

Ford 3600

Lazio

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Janicholson

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Steve@Advance

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David G

Well-known Member

Mike M

Well-known Member

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