If it is all that is wrong, then yes.
Replace water pump and gasket
No, you do not need. Just remove all bolts and pull it out. Make sure that you replace the water pump gasket.
Just the water pump gasket and a jug of antifreeze.
You need a water pump and water pump gasket (sometimes it comes with water pump but not always). It's a good idea to get to replace crankshaft, camshaft and oil pump seals. Also if money allows replace the timing belt spring and its tensioneer.
To change the water pump simply remove the bolts from the waterpump, pull it off and replace with new. The power steering pump will need to be loosened and moved aside to remove one bolt. Clean old gasket from engine block and replace with new gasket and replace with new waterpump.
You need to take off the old water pump. You need to loosen or remove anything that gets in the way of removing the water pump. Once the pump is off, you need to clean the surface of the engine of all dibri so you can apply a gasket sealer. Apply the gasket and water pump. Replace all other parts that were moved.
I was looking at fordparts.com and it shows a water pump gasket
You need to remove the timing belt before you even will able to access it. Thus, use the procedure how to change the timing belt, but without changing part. Replace the water pump, make sure that you replace the water pump gasket too.
more than likely it is the water pump gasket,it probably has a tear in it or just dry rotted from age and use or if it is leaking out of the water pump itself it is the seal inside the water pump itself if this is the case the water pump must be replaced if it is the gasket just replace the gasket ...
There is a weep hole on the underside of the water pump. If it is leaking out of that weep hole, it is defective and needs replacing. If the gasket is leaking which is unlikely if the pump is an OEM pump, you need to just go ahead and replace the pump anyway. If you go to all the trouble and labor to remove the pump in order to replace the gasket it would be foolish to not just go ahead and install a new water pump instead of reinstalling the old one, which may fail at any time.
to replace water pump on diesel first you remove the serpentine belt from the water pump pulleu next you remove the fan and fan clutch you will need 2 special wrenches for this next dump the radiator coolant and disconect radiator hoses at water pump then using 8 mm socket remove the bolts that hold water pump to block clean old gasket from durface of block install new pump and gasket replace everything else is reverse of pulling it apart
The water pump is driven by the pulley and serpentine belt on the left side of the engine. You'll need to remove the water pump pulley to access the water pump housing bolts. You may need to remove other pulleys to access the bolts. Replace the water pump gasket to prevent leaks.