WATER PUMP

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WATER PUMP ;

Reliant Part Number ; 92828

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WATER PUMP GASKET

Reliant Part Number ; 6075

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WATER PUMP ; HOW TO IDENTIFY A WORN PUMP

If there is no visible sign of the water pump leaking externally and if you are suffering overheating

then perhaps the water pump is worn and not working at maximum efficiency ?

When you have removed the water pump it might appear to have nothing wrong with it .

All the vanes will be intact , it will be spinning freely and have no noise when it is spun .

However that is not the check for efficiency .

Although the blades might all be intact the critical check is the gap between the end of each blade

and the approx 45 degree machined part of the water pump body that the blades rotate around .

While theere must obviously be a gap between the vanes and the body it should be miniscule and there should be NO easily see-able large gap .

As the gap increases the efficiency of the pump diminishes .

Try feeler gauges in the gap and I suspect you might { If worn }

have to use a lot because you will be able to see a gap up to 2 - 3 mm .

http://picasaweb.google.co.uk/lh/pho...eat=directlink

Imaginary experiment follows ;

If you can imagine a tin can as the water pump filled with water and a pencil standing upright in the middle .

Imagine rotating the pencil and not much will happen to cause the water to flow around the can sides .

Now , with your ever increasing imagination , think of the pencil with a flat bit sticking out of one side but only going to halfway between the pencil and the can side . Now , once again , Imagine rotating the pencil .

This time the water will start to move in the direction of rotation near the centre of the can ; Not all the water , because the water which is not being touched by the blade is not being pushed around

Then , with your imagination running riot , Imagine the flat bit on the side of the pencil is right to the inside of the can with only a couple of thou gap and this time when you rotate the pencil the water has nowhere to go except in the direction it is being pushed around .

{ I would like to report that no cans were hurt during this demo but I would be lying }

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When you get your new water pump you will immediately be able to see the difference compared to the old water pump .

You will be able to see that the vanes run VERY close to the water pump body compared to the gap on the worn water pump.

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