Removing Coolant Regulator

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 Porsche 911, 2012 Porsche 911, 2011 Porsche 911, 2010 Porsche 911, and 2009 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.

Information

Collect emerging coolant in a suitable pan.

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)

WARNING: Caustic fluids

Danger of chemical burns

→ 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.

Disconnect coolant hoses -1- from the coolant regulator housing.
1. 1.1. Loosen screw-type clamps -2- .
2. 1.2. Remove spring clamp -3- from the Henn coupling and pull off coolant hose.
  
  Fig 1: Identifying Coolant Hoses
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Remove cover on coolant regulator housing -1- .
1. 2.1. Unscrew three hexagon socket head bolts (M6 x 35, a/f 5) -2- on the housing cover.
2. 2.2. Pull housing cover out of the coolant hoses.
3. 2.3. Remove housing cover with coolant regulator.
  Be careful with the coolant regulator!
  
  Fig 2: Identifying Coolant Regulator Housing Cover
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Remove coolant regulator -1- from the housing cover.

Fig 3: Identifying Coolant Regulator
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Replace O-ring -1- in the housing cover.

Fig 4: Identifying Housing Cover O-Ring
Courtesy of PORSCHE CARS NORTH AMERICA, INC.