Removal

• 1). Disconnect the battery's ground cable, loosening the black cable's clamp nut with a wrench.
  
  
• 2). Open the drain fitting on the radiator -- it may need pliers -- and drain the engine coolant into a large container. Drain the remaining coolant from the engine block drain plugs.
  
  
• 3). Loosen the bolts on the water pump pulley with your wrench.
  
  
• 4). Rotate the drive belt tensioner with a 15-millimeter wrench -- the direction can vary -- and slip the drive belt off the pulleys. Slowly release the tensioner, then unbolt and remove it with the wrench.
  
  
• 5). Disconnect the heater hose from the water pump. Depending on the engine type, you'll need to disconnect the wiring harness from the hose's mounting stud or the radiator hose.
  
  
• 6). Remove the water pump's bolts/nuts with your wrench and remove the pump; you'll need to remove the air conditioning compressor brace on some engines. Tap the pump assembly with a soft-face hammer if you can't break the seal.
  
  
• 7). Unbolt and remove the pump from its housing if needed.
  
  

Installation

• 1). Clean off all traces of sealant/gasket material from the mounting surface on the engine with a gasket scraper and acetone.
  
  
• 2). Install the new pump into the housing with its bolts if needed, then install the pump/housing on the engine with its bolts/nuts.
  
  
• 3). Connect the hoses and wiring to the pump.
  
  
• 4). Reinstall the belt tensioner with its bolts and then install the drivebelt on the pulleys and tensioner -- make sure the belt properly seats in the pulley grooves and the belt follows the same path as before.
  
  
• 5). Tighten the water pump pulley bolts.
  
  
• 6). Reconnect the battery cable.
  
  
• 7). Refill the radiator with the engine coolant; use new coolant mixed with water if the old coolant is contaminated.