Removing Crankshaft

→ Protect components from dirt and contamination.

→ Clean or replace dirty components.

→ The holding wrench must make contact with the pulley when tightening.

→ Get another person to help.

1. Remove aluminum pulley.

   → 137619 REMOVING AND INSTALLING PULLEY 

   1. 1.1. Get another person to counter while you do this.
   2. 1.2. Replace the hexagon-head bolt and friction washer.
2. Screw off 18 hexagon nuts (M8) on the crankcase cross bolt connection.
3. Unscrew the two short through bolts -13 and 14-  on cylinder bank 4-6 (flywheel side).
   Fig 1: Locating Through Bolts On Flywheel Side

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
4. Screw off the fastening nuts (hexagon -1-  and multiple-tooth -2-  ) on the chain box (cylinder bank 1-3).
   Fig 2: Locating Cross Bolt Connection On Chain Box

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
5. Loosen through bolts in the sequence -5 to 15-  .
   Fig 3: Through Bolts Loosening Sequence

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
6. Pull off through bolts.
   Fig 4: Locating Through Bolts

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Information 

   • The through bolts in thrust blocks 2, 3, 4 and 5 -Arrows- can only be removed after lifting off crankcase half 1-3. 
7. Lift off crankcase half 1-3.
8. Remove through bolts on the inner thrust blocks.
   1. 8.1. On the thrust blocks -2 and 4-  , remove O-rings -arrows-  .
      Fig 5: Locating Through Bolts On Thrust Block

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
9. Lift out the crankshaft and place it on a clean surface.
   1. 9.1. Remove worn bearing shells.
10. Disassemble the crankshaft if necessary.

    → WM 134837 DISASSEMBLING AND ASSEMBLING CRANKSHAFT - GT3 

11. Clean the crankcase halves thoroughly before using them again.