When I removed the air conditioner water pump from the forward bulkhead, I noticed that the cheap plastic mounting bracket was badly deformed, and one mounting ear was broken off. The factory mounts the bracket to the forward bulkhead with small rubber grommets and screws. This method does provide a small degree of noise and vibration isolation, but not enough to suit my tastes. So, I went back to the milling machine, and designed a billet aluminum bracket to replace the plastic one. The pump itself was completely disassembled and cleaned. There was a bit of buildup on the impeller, but cleaning it off was relatively easy.