Group 10 - Crankcase

Fig 1: Identifying Crankcase 9A1

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1. Crankcase
2. Dowel sleeve
3. Lid
4. O-ring
5. ¹ Stud, micro-self-locking (use Loctite 243 and leave to harden for at least 3 hours)  . → Tightening torque: 5 Nm (3.5 ft. lb.) 
6. Screw plug, M30 x 1.5 → Tightening torque: 80 Nm (59 ft. lb.) 
7. Sealing ring
8. Dowel sleeve
9. Torx screw, M10 x 195 (tighten torque angle in 2 stages) → Initial tightening: 5 Nm (3.5 ft. lb.)  → Tightening torque: 12 Nm (9 ft. lb.)  → Tightening torque: 15 Nm (11 ft. lb.)  → Torque angle: 75°  → Torque angle: 75° 
10. Torx screw, M8 x 120 → Tightening torque: 33 Nm (24 ft. lb.) 
11. Torx screw, M8 x 35 → Tightening torque: 13 Nm (9.5 ft. lb.) 
12. Torx screw, M6 x 40 → Tightening torque: 13 Nm (9.5 ft. lb.) 
13. Torx screw, M8 x 35 → Initial tightening: 5 Nm (3.5 ft. lb.)  → Torque angle: 70°+/-5° 
14. ¹ Stud, M10 x 60 (use Loctite and leave to harden for at least 1 hour)  → Tightening torque: 5 Nm (3.5 ft. lb.) 
15. Lid
16. Speed sensor
17. Fastening screw, M6 x 16 (speed sensor) → Tightening torque: 10 Nm (7.5 ft. lb.) 
18. Knock sensor
19. Fastening screw, M8 x 35 (knock sensor) → Tightening torque: 23 Nm (17 ft. lb.) 

1. 29  - Transport eyebolt
2. 21  - Torx screw, M6 x 25 → Tightening torque: 13 Nm (9.5 ft. lb.) 

¹⁾  If the threaded bolt unscrews: Clean the thread. Check that it is free of grease and oil and is completely dry. Apply a 2-mm coating of Loctite 243 all the way around on the first thread of the crankcase bore. Observe the specified hardening time. 

Fig 2: Crankcase Screw Tightening Sequence

Courtesy of PORSCHE CARS NORTH AMERICA, INC.