Mercury 3W1Z-8A080-AA Tank Assembly - Radiator Overflow

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Disconnect the cable from the negative battery terminal. Drain the cooling system, then disconnect the overflow hose, upper radiator hose, and lower radiator hose from the radiator. When removing the hoses, use a pliers to squeeze the tangs together and slide the clamp away from the end of the hose, then pull the hose from the radiator connection. If equipped with an automatic transmission or engine oil cooler, remove the cooler lines from the radiator. Use a flare-nut wrench on the fluid line and a back up wrench at the radiator fitting, to prevent damage to the transmission cooler lines when removing them from the radiator. Be careful not to damage the lines or fittings. Plug the ends of the disconnected lines to prevent leakage and stop dirt from entering the system. Have a drip pan ready to catch any spills. Remove the radiator mounting bolts. The cooling fan shroud is held in place by two bolts as is the radiator support bracket. Both the shroud and the bracket must be removed before the radiator can be removed. Unbolt the fan shroud and slip it back over the fan. Lift the radiator from the engine compartment. Take care not to contact the fan blades. Prior to installation of the radiator, replace any damaged hose clamps and radiator hoses. Radiator installation is the reverse of removal. When installing the radiator, make sure it seats properly in the lower saddles and that the rubber mounts are intact. Check to make sure that the rubber mounts are in place and in good shape, if they're beginning to deteriorate, now is the time to replace them. After installation, fill the system with the proper mixture of antifreeze, and also check the automatic transmission fluid level. Drain the engine coolant. Remove the coolant overflow hoses from the tank. Locate the two hoses attached to the Coolant Reservoir and disconnect them. Remove the bolts and detach the tank. Prior to installation, make sure the tank is clean and free of debris which could be drawn into the radiator. Wash it with soap and water if necessary. Installation is the reverse of removal.

Drain the cooling system, then disconnect the overflow hose, upper radiator hose, and lower radiator hose from the radiator.