Installing Crankcase Half For Cylinders 1 To 3

Information 

• The correct assembly position is clearly visible. 

Information 

• If necessary,  > P221 - restraining straps can be used. Only fix two connecting rods in place in this case. Hold the third connecting rod when fitting the crankcase half. 

Information 

The help of another person is required.

1. Replace screws -1-  in crankcase half.

   Fit new sealing washers -3-  with > 9786 - protective sleeve-2-  .

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Through bolt, sealing washer and protective sleeve

   1	Screw
   2	> 9786 - Protective sleeve
   3	Sealing washer

   Information 

   • The sealing faces of the crankcase halves must be completely free of oil, grease and burrs before applying sealant. 
   • Apply a bead of sealant with a diameter of no more than 1 mm. Always apply sealant to the required area only. 
   • Join the crankcase halves within max. 5 minutes of applying the bead of sealant. 
2. Apply Dobotech sealant (Part No. 000.043.207.31) on crankcase half for cylinder bank 2.

   Carefully apply a continuous bead of sealant -arrows 1-  with a diameter of 1 mm.

   Remove residual sealant in the crankshaft flange area following installation -arrows 2-  .

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Sealant on crankcase half, cylinder bank 2

3. Fit and grease new O-ring on sealing face of crankcase half for cylinder bank 2.
4. Fit crankcase half of cylinder bank 1 with the help of another person on the crankcase half of cylinder bank 2.
5. Screw in through-bolts and tighten in the sequence -1 to 14-  .

   > Initial tightening 5 Nm (3.5 ftlb.) 

   > Initial tightening 15 Nm (11 ftlb.) 

   > Initial tightening 50 Nm (37 ftlb.) 

   > Loosening 0 Nm (0 ftlb.) 

   > Initial tightening 5 Nm (3.5 ftlb.) 

   > Tightening torque 15 Nm (11 ftlb.) 

   > Torque angle 75° 

   > Torque angle 75° 

   Fig 1: Crankcase Through-Bolt Screws Tightening Sequence

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Through-bolt screws on crankcase

6. Screw in screws for cross bolt connection and tighten in the sequence -15 to 32-  .

   M6:  > Tightening torque 13 Nm (9.5 ftlb.) 

   M8:  > Tightening torque 33 Nm (24 ftlb.) 

   Fig 2: Cross Bolt Connection Screws Tightening Sequence

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Outer cross bolt connection

7. > 9590 - Mounting parts  for securing crankcase half for cylinders 1 - 3 to the engine support must now be screwed in and tightened.

   >  WM, 1001IN TOOLS FOR REMOVING UNITS AND WORKING ON THE ASSEMBLY SUPPORT  .