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Tightening torque
General tightening torque
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 always be replaced with new screws during reinstallation.
Always use new screws and nuts when angle tightening. Any exceptions to this rule will be indicated in the method.
Angle-tightening in tight spaces. See .
Exhaust system (to the turbocharger (TC)) 24 Nm
Cylinder head Tighten the screws in sequence from the center and outwards.
Stage 1........20 Nm
Stage 2........60 Nm
Stage 3........130°
Manifold
(cylinder head side) 25 Nm
Pipe screw
(coolant pipe / turbocharger (TC)) 26 Nm
Pipe screw 26 Nm
(oil pressure line / turbocharger (TC)) 26 Nm
Pipe screw
(oil pressure line / engine block) 38 Nm
Sub-frame nut (lower torque rod)
Stage 1........65 Nm
Stage 2........60°
Subframe screws (start on the left-hand side, then the right-hand side)
Stage 1........105 Nm
Stage 2........120°
Subframe bracket 50 Nm
Intake manifold 19 Nm
Catalytic converter 25 Nm
(to the turbocharger (TC)) 24 Nm
(to the exhaust system)
Knock sensor (KS) 20 Nm
Piston cooling valve
(piston cooling oil duct, in cylinder block) 36 Nm
Timing gear pulley
(camshafts without variable valve timing) 20 Nm
Timing gear pulley
(camshafts with variable valve timing) 10 Nm
Heated oxygen sensor (HO2S) 45 Nm
Carrier plate
Stage 1........45 Nm
Stage 2........50°
Intermediate section
Tighten the screws in sequence from the center and outwards.
Stage 1 M10........20 Nm
Stage 2 M10........45 Nm
Stage 3 M8........24 Nm
Stage 4 M7........17 Nm
Stage 5 M10........90°
Torque converter 50 Nm
Engine mounting Right side
(M10x35 to cylinder block)
Stage 1........35 Nm
Stage 2........60°
Engine mounting Right side
(M8x23 to cylinder block)
Stage 1........20 Nm
Stage 2........60°
Right-hand engine pad for the subframe (Only applies to XC90)
Stage 1........120 Nm
Stage 2........40°
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 pan plug 38 Nm
Oil pump
(countersunk Allen, M6x20, holds the pump housing together) 6 Nm
Oil return line
(turbocharger (TC)) 12 Nm
Oil pan (Applies to B5254T4) the screws (1, 2, 3 and 4). Tighten to ........3 Nm
the screws (5). Tighten to ........25 Nm. Then tighten to 48 Nm
Oil pressure switch 27 Nm
Stud (at exhaust port, manifold,turbocharger (TC)) 20 Nm
Plug (check hole for gauging valve clearance) 20 Nm
Plug (gauge hole / crankshaft seal) 38 Nm
Belt tensioner (mechanical) 20 Nm
Flywheel
Stage 1........45 Nm
Stage 2........65°
Vibration damper -2002 (flanged screws x4)
Stage 1........25 Nm
Stage 2........30°
Vibration damper 2002-/flanged screws x4
Stage 1........25 Nm
Stage 2 ........60°
(center nut) 180 Nm
Temperature sensor (coolant) 22 Nm
Timing cover,(front/rear) 12 Nm
Timing cover,(upper) 8 Nm
Turbocharger (TC)(to manifold, without gasket) 25 Nm
Turbocharger (TC)(to manifold, with gasket) 37 Nm
Spark plugs 30 Nm
Connecting rod cap (connecting rod with treated toothed surface between the connecting rod and cap, screw with waist)
Stage 1........20 Nm
Stage 2........90°
Connecting rod cap (connecting rod with fracture surface between the connecting rod and cap, fully threaded screw)
Stage 1........30 Nm
Stage 2........90°
Transmission screw (lower torque rod)
Stage 1........35 Nm
Stage 2........40°
Variable valve timing center screw 120 Nm
Variable valve timing center plug 35 Nm
Mvh Stig