Removing Tandem Pump - Cylinder Bank 1-3

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.

CAUTION: Ingress of dirt

Danger of material damage due to blocked oil bores/oil ducts.

→ Absolute cleanliness is essential when working on the engine.

→ Lay removed engine parts on a clean base and make sure to cover them.

→ Use the cover for dust protection when fitting the engine NR.165 on the engine assembly support.

Remove oil return line on the pump neck.
1. 1.1. Loosen union nut (a/f 27) and counter at the pump neck at the same time with an open-ended wrench (a/f 24).
2. 1.2. Collect emerging engine oil in a suitable container.
Remove vacuum line for brake booster -1- on the tandem pump.
1. 2.1. Unscrew two M6 Torx screws -2- and pull the line up and off.
  
  Fig 1: Identifying Tandem Pump Vacuum Line
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. 2.2. Remove old O-rings.
Unscrew three M6 Torx screws -2- on the tandem pump.
1. 3.1. GT3: Unscrew one M6 Torx screw on the holding clamp securing the vacuum line for the exhaust valve.
2. 3.2. Turbo: Unscrew one M6 Torx screw on the holding clamp for the oil line.
  
  Fig 2: Identifying Tandem Pump Screws (Cylinder Bank 1-3)
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Pull off tandem pump on the cylinder head.
Clean sealing faces (with a clean cloth soaked in acetone) and replace O-rings on the pump -1 and 2-

Fig 3: Identifying Oil Suction/Tandem Pump And O-Rings
Courtesy of PORSCHE CARS NORTH AMERICA, INC.