Removing Coolant Pump

→ Avoid contact with caustic fluid.

→ Wear personal protective gear.

→ Ensure that there is good ventilation.

→ If you do come into contact, wash off immediately with plenty of warm water and contact a doctor if necessary.

Information 

Specifications for wrench sizes (a/f specifications) for screw heads are described as follows:

• Torx screws: (E..) for external Torx, (T..) for internal Torx. 
• Hexagon-head bolts (internal and external hexagon): Wrench size (a/f) 

1. Remove coolant pump.
   1. 1.1. Unscrew five external Torx screws (E10, M6 x 25) -1-  .
   2. 1.2. Unscrew one external Torx screw (E12, M8 x 25) -2-  .
      Fig 1: Identifying Coolant Pump Screws

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. Disconnect coolant pump from the bracket and remove it.

   Collect emerging fluid. 

   1. 2.1. The pump seal can be reused if there are no visible signs of damage. 
3. Check coolant pump pulley for damage and replace the coolant pump if necessary.
4. Clean sealing faces thoroughly.