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Easiest way to drain radiator on 1969 Mack Fire Engine


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Welcome to the site.

If you put the specific model on here someone will tell you where it is.

One thing to be especially careful with on a fire truck is to ensure that the engine cooling line running from the radiator to the pump is drained. This line contains raw water, not anti-freeze, and is notorious for freezing. If it freezes in the internal heat exchanger it can ruin the radiator. 

When you open the pump drains do not assume the pump is dry just because water does not flow out of the drains.  If it does not the chances are that the drain is plugged with dirt and needs to be cleaned out. Do not open the "master" drain under pressure or you will blow the "O" ring out of it and it will leak.

Money, sex, and fire; everybody thinks everyone else is getting more than they are!

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Thanks alot, the truck overheats, then the water gets pushed out the overflow tube, one shop said probable blown head gasket....am thinking of using block seal, is there anything I should check, before attempting this?

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