You must first drain the coolant, here is a guide and some diagrams (BELOW) that will help you get the job done.
From the Manual
Water Pump-2.0L Zetec
Disconnect the battery ground cable.
Drain the cooling system.
Loosen the coolant pump pulley retaining bolts.
Remove the accessory drive belt.
Remove the coolant pump pulley.
Detach the coolant pump from the coolant pump housing.
Rotate the coolant pump 180 degrees within the coolant pump housing and remove it.
Discard the sealing ring
NOTE: Install a new coolant pump sealing ring and lubricate with clean engine coolant.
To install, reverse the removal procedure.
Fill and bleed the cooling system.
Please let us know if you need anything else to get the problem fixed.
Images (Click to enlarge)
Tuesday, May 30th, 2017 AT 12:18 PM