Tightening Torques
Tightening torques - MA.101 and MA.102
Information
Group 10 - Crankcase
Crankcase 9A1
1 - Crankcase
2 - Dowel sleeve
3 - Lid
4 - O-ring
5(1) - Stud, micro-self-locking (use Loctite(R) 243 and leave to harden for at least 3 hours). - Tightening torque: 5 Nm (3.5 ftlb.)
6 - Screw plug - Tightening torque: 80 Nm (59 ftlb.)
7 - Sealing ring
8 - Dowel sleeve
9 - Torx(R) screw (tighten torque angle in 2 stages) - Initial tightening: 5 Nm (3.5 ftlb.) - Tightening torque: 12 Nm (9 ftlb.) - Tightening torque: 15 Nm (11 ftlb.) - Torque angle: 75° - Torque angle: 75°
10 - Torx(R) screw - Tightening torque: 33 Nm (24 ftlb.)
11 - Torx(R) screw - Tightening torque: 13 Nm (9.5 ftlb.)
12 - Torx(R) screw - Tightening torque: 13 Nm (9.5 ftlb.)
13 - Torx(R) screw - Tightening torque: 13 Nm (9.5 ftlb.)
14(1) - Stud (use Loctite(R) and leave to harden for at least 1 hour) - Tightening torque: 5 Nm (3.5 ftlb.)
15 - Lid
16 - Speed sensor
17 - Fastening screw for speed sensor - Tightening torque: 10 Nm (7.5 ftlb.)
18 - Knock sensor - Tightening torque: 23 Nm (17 ftlb.)
19 - Fastening screw securing knock sensor
20 - Transport eyebolt
21 - Torx(R) screw - Tightening torque: 13 Nm (9.5 ftlb.)
Tightening sequence for crankcase screws
Information
Group 13 - Crank drive, pistons
Connecting rod bolts
1 - Connecting rod bolts - Initial tightening: 20 Nm (15 ftlb.) - Torque angle: 80°
Belt drive
1 - Torx(R) screw for unit carrier - Tightening torque: 33 Nm (24 ftlb.)
2 - Torx(R) screw for unit carrier - Tightening torque: 33 Nm (24 ftlb.)
3 - Torx(R) screw for unit carrier - Tightening torque: 33 Nm (24 ftlb.)
4 - Countersunk screw - Tightening torque: 23 Nm (17 ftlb.)
5 - Countersunk screw - Tightening torque: 23 Nm (17 ftlb.)
Information
Group 15 - Cylinder head, valve drive
Cylinder head screws
1 - Cylinder head screw - Tightening torque: 13 Nm (9.5 ftlb.)
2 - Cylinder head screw - Tightening torque: 13 Nm (9.5 ftlb.)
3 - Cylinder head screw - Initial tightening: 5 Nm (3.5 ftlb.) - Tightening torque: 50 Nm (37 ftlb.) Loosen all screws and then tighten them again - Initial tightening: 5 Nm (3.5 ftlb.) - Tightening torque: 12 Nm (9 ftlb.) - Torque angle: 60° - Torque angle: 60°
4 - Cylinder head screw - Initial tightening: 5 Nm (3.5 ftlb.) - Tightening torque: 50 Nm (37 ftlb.) Loosen all screws and then tighten them again - Initial tightening: 5 Nm (3.5 ftlb.) - Tightening torque: 12 Nm (9 ftlb.) - Torque angle: 60° - Torque angle: 60°
Tightening sequence for cylinder head screws
Camshaft bearing covers
1 - Observe tightening sequence for fastening screw on bearing cover - Initial tightening: 5 Nm (3.5 ftlb.) - Tightening torque: 5 Nm (3.5 ftlb.) - Torque angle: 50°
2 - Camshaft bearing cover
3 - Dowel sleeve
4 - Bearing saddle
5 - Fastening screw - Initial tightening: 5 Nm (3.5 ftlb.) - Tightening torque: 5 Nm (3.5 ftlb.) - Torque angle: 50°
Tightening sequence for camshaft bearing cover
Fastening screws for camshaft controller/sprocket
1 - Fastening screw for camshaft controller - Tightening torque: 35 Nm (26 ftlb.) - Torque angle: 120°
2 - Fastening screws for camshaft timing gear - Tightening torque: 30 Nm (22 ftlb.) - Torque angle: 60°
Cylinder head cover
1 to 20 - Tighten screws 1 to 4 a second time - Tightening torque: 13 Nm (9.5 ftlb.)
Spacer
1 - Spacer
2 - Torx(R) screw - Tightening torque: 13 Nm (9.5 ftlb.)
3 - Screw plug for secondary air duct - Tightening torque: 25 Nm (19 ftlb.)
4 - Scavenging restrictor - Tightening torque: 3 Nm (2 ftlb.)
Information
Group 17 - Lubrication
Oil pump
1 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
2 - Cap screw - Tightening torque: 40 Nm (30 ftlb.)
3 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
4 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
5 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
6 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
7 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
Oil pan
1 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
2 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
3 - Screw plug - Tightening torque: 50 Nm (37 ftlb.)
Tightening sequence for upper part of oil pan
1-21 - Tightening sequence for screws in upper part of oil pan
Tightening sequence for lower part of oil pan
1-21 - Tightening sequence for lower part of oil pan
Oil module
1 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
2 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
3 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
4 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
5 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
6 - Lid - Tightening torque: 25 Nm (19 ftlb.)
7 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
Information
Group 19 - Cooling
Thermostat
1 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
2 - Screw plug for coolant pump
3 - Fastening screw for water guide - Tightening torque: 13 Nm (9.5 ftlb.)
4 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
5 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
6 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
Coolant pump
1 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
2 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
3 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
4 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
5 - Fastening screw - Tightening torque: 13 Nm (9.5 ftlb.)
6 - Fastening screw - Tightening torque: 23 Nm (17 ftlb.)
Vibration damper to crankshaft M8 x 1 x 25 outer Torx(R) 60 Nm (44 ftlb.)
Tighten screws uniformly to the tightening specification in diagonally opposite sequence
Flywheel to crankshaft M10 x 29
Always replace screws
Tighten screws evenly and crosswise
Initial tightening 25 Nm (19 ftlb.)
Final tightening - torque angle 120°
Intake-air distributor external Torx(R) screws (E10, M6 x 35) 13 Nm (9.5 ftlb.)
Exhaust Manifold Torx Screws (E12, M8 x 21) 23 Nm (17 ftlb.)
Tighten from the inside out