Fastener Tightening Specifications

Components	Fastener Size	Nm
Adjusting element bolt	-	1.5
Air filter upper section to air filter housing lower section ²
- Bolt	-	1.5
- Bolt	-	8
Air guide pipe bolt	-	8
Auxiliary components bracket
- Short bolt	-	20 + 45°
- Long bolt	-	20 + 180°
Charge air temperature sensor after charge air cooler	-	22
Coolant pipe bolt	-	10
Differential pressure sensor	-	8
EGR temperature sensor	-	60
Exhaust pressure sensor 1	-	8
Fuel pressure regulator valve ¹	-	80
Fuel pressure sensor	-	100
Fuel return line bolt	-	8
High pressure line union nut	-	28
High pressure reservoir (rail) bolt	-	20
High pressure line bolt	-	8
Intake air pre-heater	-	8
Intake manifold bracket and throttle valve control module bracket - tightening specification and sequence	-	Figure
Intake manifold with charge air cooler - tightening specification and sequence	-	Figure
Mass airflow sensor bolt	-	1.5
NOx Sensor	-	52
Oxygen sensor 1 before catalytic converter	-	52
Pre-reservoir nut	-	20
Screw-type clamps
- Clamp 9 mm wide	-	3
- Clamp 13 mm wide	-	5.5
Tension clamp bolt ¹	-	9 + 180°
Throttle valve control module connection bolt	-	8
Toothed belt sprocket for the high pressure pump	-	95
¹ Always replace if removed ² For bolt tightening clarification, refer to OVERVIEW - AIR FILTER HOUSING and see items -6 and 7-