Agra Cat 254………over heating

Have you looked to make sure the belt is tight?  A slipping belt can be the cause overheating.  Another thing to look at is the radiator.  Can you see through the fins looking from the front?  It should be clean.  Also inside the radiator.  Are the tubes plugged up?

I'm pretty sure your radiator is plugged up, I have seen this many times over the last 10 years, you need to be able to see thru all the fins, you also need to remove the battery to get the lower part clean

Tommy

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Six years old? Wouldn't think a water pump would go out that soon, but it could. 

Check as Spring Valley said. Start with radiator. You can clean by getting a hose with a sprayer down there and spray from inside to force dirt back out the way it came. Careful using a high pressure washer. That could bend the fins closed. Back flush the radiator. After that, look into the top of the radiator to see if you are getting a good flow.

Jack

Take off the top hose and look in the goose neck.  Sometimes they are partially blocked with casting slag in the goose neck narrowing it down and you know the ending to that story and you might as well get the radiator cleaned out and flush the block.

Walt

This is why there are such things as coolant filters. These are standard equipment on larger machines. It's the red filter on the left. Casting sand has long been the nemesis of engine manufacturers; it can eat away cylinder liners, carry away coolant pump impellers, destroy coolant pump seals and shafts, plus it displaces coolant and creates cavitation which causes erosion and hot spots. The list goes on and on and on…

If air flow through the radiator is good, Fan blade & belt good, Thermostat good, Radiator cap good, No hoses collapsing ????

My guess is head gasket.

Ronald