First: Place a large drain pan under the front side of the engine. A bus pan commonly used in restaurants is a good tool to have in the garage especially when performing cooling system repairs.

I think you will find that your biggest challenge will be dealing with the brackets on the left side of the water pump. The brackets secure the Air Injection pump and the Alternator. Loosen all the bolts which secure the two brackets to the front of the engine, the assembly will have a very noticeable wiggle when you have loosened all the bolts. This will provide some flexibilty so you can ease the water pump out from behind the bracket.

You will find that the vibration dampener has two notches. The larger of the two notches will provide sufficient access to the lower water pump bolts. Just rotate the crankshaft (clock wise) to align the notch with the lower left side bolt (remove bolt). Rotate the crankshaft to align the notch with the lower right side bolt (remove bolt). Remove all but the two top bolts on the water pump. Loosen the two top bolts about 4 turns and allow the coolant to drain out of the engine. After the engine has drained remove the two remaining bolts and extract the old pump. Clean the mounting surface on the new pump with brake cleaner or alcohol, this will remove the oily substance and will provide a nice dry surface for mounting the gasket. Place the gasket against the pump assembly as if it were being mounted on the engine, this helps identify which side of the gasket you will be applying adhesive to. (I prefer to use a spray adhesive) Apply adhesive to the water pump gasket then place the gasket on the pump. You’ll want to ensure the gasket does not shift or move during installation so allow the adhesive to cure before installing the new pump.

When introducing the new pump to the mounting area you will need to muscle with the alternator bracket assembly. You will want to avoid tearing the pump gasket as you slip it in between the bracket and the timing cover. Reassemble the front of the engine in the reveres order of disassembly.

PS: You may need to replace the drain tube and bucket unit as it will more than likely break during disassembly.