General tightening torques
Note. Screws coated with a locking fluid or self locking nuts must be replaced with new when reinstalled.
See the table below to find the tightening torques for components not included in the summary.
Nuts and screws which are not self locking can be reused provided that they are in good condition.
| Applies to screwed joint with strength class 8.8. | |
|---|---|
| Thread | Tightening torque (Nm) |
| M5 | 5 |
| M6 | 10 |
| M7 | 17 |
| M8 | 24 |
| M10 | 50 |
| M12 | 80 |
| M14 | 130 |
Summary of specific components and tightening torques
Note. Screws coated with locking fluid or sealant must be replaced with new when reinstalled.
Always use new screws and nuts when angle tightening. Any exceptions to this rule will be indicated in the method.
| Exhaust system (to turbocharger (TC)/manifold) | 30 Nm |
|---|---|
| Exhaust gas temperature sensor/three-way catalytic converter (TWC)/particle filter | 45 Nm |
| Fuel control valve/fuel rail | Stage 1........60 Nm Step 2........80 Nm |
| Fuel temperature sensor/high pressure pump | 21 Nm |
| Fuel temperature sensor/fuel rail | 70 Nm |
| Fuel line (high pressure) | 28 Nm |
| Fuel line (high pressure) | Stage 1........8 Nm Step 2........26 Nm |
| Idler pulley (toothed belt gearbox) | 25 Nm |
| Centre-nut (front edge end of the crankshaft) | 300 Nm |
| Cylinder head Tighten the screws in sequence from the center and outwards. | Stage 1........20 Nm Stage 2........ Slacken off Step 3........20 Nm Step 4........50 Nm Stage 5........90° Stage 6........90° |
| Attaching screw control valve high pressure pump | Stage 1......4 Nm Stage 2......7 Nm |
| Glow plug | 8 Nm |
| Pipe screw/fuel return high pressure pump | 25 Nm |
| Pipe screw/fuel delivery high pressure pump | 21 Nm |
| Pipe screws (coolant pipe turbocharger (TC)) | 26 Nm |
| Pipe screws (oil pressure line/turbocharger (TC)) | 18 Nm |
| Pipe screws (oil pressure line/engine block) | 38 Nm |
| Sub-frame bracket | 50 Nm |
| Sub-frame screw (start on the left-hand side, then the right) | Stage 1........105 Nm Stage 2........120° |
| Sub-frame nut (lower torque rod) | Stage 1........65 Nm Stage 2........60° |
| Fuel injector (tension mounting) | 13 Nm |
| Injectors D5244T - D5244T3 | 28 Nm |
| Injectors D5244T4 - D5244T9 | 13 Nm |
| Rail D5244T - D5244T3 | 16 Nm |
| Rail D5244T4 - D5244T9 | 25 Nm |
| Fuel injection pump | 18 Nm |
| Camshaft sensor | 10 Nm |
| Camshaft cover | 10 Nm |
| Piston cooling valve (piston cooling oil duct) | 45 Nm |
| Centre screw for the timing belt | 25 Nm |
| Catalytic converter (TWC) against the turbocharger (TC) | 24 Nm |
| Timing gear pulley camshaft | 30 Nm |
| Heated oxygen sensor (HO2S) | 45 Nm |
| Carrier plate | Stage 1........45 Nm Stage 2........50° |
| Intermediate section/cylinder block Tighten the screws in sequence from the center and outwards. | M10 Stage 1........20 Nm M10 Step 2........40 Nm M8 Step 3........24 Nm M7 Step 4........17 Nm M10 Stage 5........110° |
| Engine mounting Right side (M10x35 to cylinder block) | Stage 1........35 Nm Stage 2........60° |
| (M8x23 to cylinder block) | Stage 1........20 Nm Stage 2........60° |
| Right-hand engine pad for the sub-frame (Only applies to XC90) | Stage 1........120 Nm Stage 2........40° |
| Nuts exhaust manifold (cylinder head side) | 30 Nm |
| Nuts turbocharger (TC)/exhaust manifold | 37 Nm |
| Lower torque rod, transmission screw | Stage 1........35 Nm Stage 2........40° |
| Lower torque rod, sub-frame nut | Stage 1........65 Nm Stage 2........60° |
| Oil filter (environmental filter) | 25 Nm |
| Oil plug in the oil sump | 38 Nm |
| Oil pump (countersunk Allen, M6x20, holds the pump housing together) | 6 Nm |
| Oil drainage pipe (turbocharger (TC)) | 12 Nm |
| Oil pressure switch | 27 Nm |
| Stud (at exhaust port, manifold, turbocharger (TC)) | 20 Nm |
| Plug (gauge hole, crankshaft adjustment) | 38 Nm |
| Plug the cylinder block | 38 Nm |
| Belt tensioner (timing belt) | 27 Nm |
| Belt tensioner (mechanical) | 35 Nm |
| Belt tensioner (for toothed belt) | 27 Nm |
| Flywheel | Stage 1........45 Nm Stage 2........65° |
| Engine speed (RPM) sensor (at the flywheel) | 10 Nm |
| Vibration damper center-nut | 300 Nm |
| Vibration damper (flanged screws x4) | Stage 1........35 Nm Stage 2........ angle-tighten 50° |
| Safety valve the nipple | 80 Nm 27 Nm |
| Temperature sensor (coolant) | 22 Nm |
| Manifold absolute pressure (MAP) sensor, fuel intermediate section | 20 Nm 60 Nm |
| Timing cover | |
| Rear Front | 8 Nm 12 Nm |
| Turbocharger (TC) (to manifold) | 35 Nm |
| Connecting rod cap | Stage 1........20 Nm Stage 2........90° |
| Transmission screw (lower torque rod) | Stage 1........35 Nm Stage 2........40° |
Note. Screws coated with a locking fluid or self locking nuts must be replaced with new when reinstalled.
See the table below to find the tightening torques for components not included in the summary.
Nuts and screws which are not self locking can be reused provided that they are in good condition.
| Applies to screwed joint with strength class 8.8. | |
|---|---|
| Thread | Tightening torque (Nm) |
| M5 | 5 |
| M6 | 10 |
| M7 | 17 |
| M8 | 24 |
| M10 | 50 |
| M12 | 80 |
| M14 | 130 |
Note. Screws coated with locking fluid or sealant must be replaced with new when reinstalled.
Always use new screws and nuts when angle tightening. Any exceptions to this rule will be indicated in the method.
| Exhaust system (to turbocharger (TC)/manifold) | 30 Nm |
|---|---|
| Exhaust gas temperature sensor/three-way catalytic converter (TWC)/particle filter | 45 Nm |
| Fuel control valve/fuel rail | Stage 1........60 Nm Step 2........80 Nm |
| Fuel temperature sensor/high pressure pump | 21 Nm |
| Fuel temperature sensor/fuel rail | 70 Nm |
| Fuel line D5244T/T2/T3 (high pressure) | 28 Nm |
| Fuel line D5244T4/T5/T6/T7/T18 (high pressure) | Stage 1........10 Nm Stage 2........60° |
| Idler pulley (toothed belt gearbox) | 25 Nm |
| Centre-nut (front edge end of the crankshaft) | 300 Nm |
| Cylinder head Tighten the screws in sequence from the center and outwards. | Stage 1........20 Nm Stage 2........ Slacken off Step 3........20 Nm Step 4........50 Nm Stage 5........90° Stage 6........90° |
| Attaching screw control valve high pressure pump | Stage 1......4 Nm Stage 2......7 Nm |
| Glow plug | 8 Nm |
| Pipe screw/fuel return high pressure pump | 25 Nm |
| Pipe screw/fuel delivery high pressure pump | 21 Nm |
| Pipe screws (coolant pipe turbocharger (TC)) | 26 Nm |
| Pipe screws (oil pressure line / turbocharger (TC)) | 18 Nm |
| Pipe screws (oil pressure line / engine block) | 38 Nm |
| Sub-frame bracket | 50 Nm |
| Sub-frame screw (start on the left-hand side, then the right) | Stage 1........105 Nm Stage 2........120° |
| Sub-frame nut (lower torque rod) | Stage 1........65 Nm Stage 2........60° |
| Fuel injector (tension mounting) | 13 Nm |
| Injectors D5244T - D5244T3 | 28 Nm |
| Injectors D5244T4 - D5244T9 | 13 Nm |
| Rail D5244T - D5244T3 | 16 Nm |
| Rail D5244T4 - D5244T9 | 25 Nm |
| Fuel injection pump | 18 Nm |
| Camshaft sensor | 10 Nm |
| Camshaft cover | 10 Nm |
| Piston cooling valve (piston cooling oil duct) | 45 Nm |
| Centre screw for the timing belt | 25 Nm |
| Catalytic converter (TWC) against the turbocharger (TC) | 24 Nm |
| Timing gear pulley camshaft | 30 Nm |
| Heated oxygen sensor (HO2S) | 45 Nm |
| Carrier plate | Stage 1........45 Nm Stage 2........50° |
| Intermediate section/cylinder block Tighten the screws in sequence from the center and outwards. | M10 Stage 1........20 Nm M10 Step 2........ 40 Nm M8 Step 3........24 Nm M7 Step 4........17 Nm M10 Stage 5........110° |
| Engine mounting Right side (M10x35 to cylinder block) | Stage 1........35 Nm Stage 2........60° |
| (M8x23 to cylinder block) | Stage 1........20 Nm Stage 2........60° |
| Right-hand engine pad for the sub-frame (Only applies to XC90) | Stage 1........120 Nm Stage 2........40° |
| Nuts exhaust manifold (cylinder head side) | 30 Nm |
| Nuts turbocharger (TC)/exhaust manifold | 37 Nm |
| Lower torque rod, transmission screw | Stage 1........35 Nm Stage 2........40° |
| Lower torque rod, sub-frame nut | Stage 1........65 Nm Stage 2........60° |
| Oil filter (environmental filter) | 25 Nm |
| Oil plug in the oil sump | 38 Nm |
| Oil pump (countersunk Allen, M6x20, holds the pump housing together) | 6 Nm |
| Oil drainage pipe (turbocharger (TC)) | 12 Nm |
| Oil pressure switch | 27 Nm |
| Stud (at exhaust port, manifold, turbocharger (TC)) | 20 Nm |
| Plug (gauge hole, crankshaft adjustment) | 38 Nm |
| Plug the cylinder block | 38 Nm |
| Belt tensioner (timing belt) | 27 Nm |
| Belt tensioner (mechanical) | 35 Nm |
| Belt tensioner (for toothed belt) | 27 Nm |
| Flywheel | Stage 1........45 Nm Stage 2........65° |
| Engine speed (RPM) sensor (at the flywheel) | 10 Nm |
| Vibration damper center-nut | 300 Nm |
| Vibration damper (flanged screws x4) | Stage 1........35 Nm Stage 2........ angle-tighten 50° |
| Safety valve the nipple | 80 Nm 27 Nm |
| Temperature sensor (coolant) | 22 Nm |
| Manifold absolute pressure (MAP) sensor, fuel intermediate section | 20 Nm 60 Nm |
| Timing cover | |
| Rear Front | 8 Nm 12 Nm |
| Turbocharger (TC) (to manifold) | 35 Nm |
| Connecting rod cap | Stage 1........20 Nm Stage 2........90° |
| Transmission screw (lower torque rod) | Stage 1........35 Nm Stage 2........40° |
See also:
• 9995716