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Fuel System - Tightening Torques - x5 (4.4l) BMW X5 E53

Fuel System

13 31 Fuel Pump with Drive and Pipes

TypeThreadTightening specificationMeasure
1AZ Fuel pump to engineAll12 N.m
2AZ Fuel pipe coupling boltAll / with K-Jetr.M89 N.m
3AZ Fuel pipe coupling boltAll / with K-Jetr.M1220 N.m
4AZ Fuel pipe to pressure regulatorAll / with L-Jetr.30 N.m
5AZ Return pipe connector to pressure regulatorAll / with L-Jetr.27 N.m

13 31 FUEL PUMP WITH DRIVE AND PIPES TIGHTENING SPECIFICATION

13 32 Fuel Filter

TypeThreadTightening specificationMeasure
1AZ Fuel line to filter housing and injection pump
Coupling nutM21 / M51 / M41M14 x 1.514 N.m
AdapterM21 / M51 / M41M12 x 1.59 N.m
Hollow boltM21 / M51 / M41M14 x 1.514 N.m
2AZ Fuel filter to holderM51 / M41M822 N.m
3AZ Air duct to fuel coolerM475.7 N.m
M572 N.m
4AZ Fuel filter coverM4725 N.m
5AZ Fuel filter with holder to bodyN428.8 N.m

13 32 FUEL FILTER TIGHTENING SPECIFICATION

13 51 Injection Pump, Control Receptacle

TypeThreadTightening specificationMeasure
1 AZ Plug for high pressure section of injection pumpM21 / M51 / M4125 N.m
2AZ Distributor injection pump to holderM21 / M51 / M4125 N.m
3AZ Electric shutoff to injection pumpM21 / M51 / M4120 +/-5 N.m
4AZ Electric cold start valve to injection pumpM2120 N.m
5AZ Coupling bolt (OUT) to injection pump (fuel return)M21 / M51 / M4125 N.m
6AZ Pressure valve holder to injection pumpM21 / M5145 N.m
7AZ Expansion element housing (temperature dependent idling speed boost) to injection pumpM2118 N.m
8AZ Distributor injection pump to flange and consoleM21 / M51 / M4122 N.m
9AZ Electr. line on fuel cutout deviceM51 / M412.5 N.m
10AZ Fuel feed line to injection pump (VP44)M4730 N.m
11 AZ Fuel return line to injection pump (VP44)M4725 N.m
12AZ Plug for static basic adjustment (injection pump VP44)M4713 N.m
13AZ Blocking screw for injection pump shaft without spacer plate (injection pump VP44)M4731 N.m
14AZ Blocking screw for injection pump shaft with spacer plate (injection pump VP44)M4713 N.m
15AZ Injection line (union nut) to injection pump (VP44)M4730 N.m

13 51 INJECTION PUMP, CONTROL RECEPTACLE TIGHTENING SPECIFICATION

13 62 Senders for Control Unit

TypeThreadTightening specificationMeasure
1AZ Temperature time switchM21 / M5118 N.m
2AZ Coolant temperature sensorM60/1 / M60/2 / M21 / M5118 N.m
All others13 N.m
3AZ Temperature switchAll28 N.m
4AZ Temperature sensor - airAll13 N.m
5AZ Charge-air pressure sensor on holderM51 / M414N.m
Charge-air pressure sensor on intake manifoldM475 N.m
6AZ Twin temperature sensor (4-pin plug-in connection)M41 / M43 / M44 / S50 / S52 / M52/ M57 / M67 / M62 / M7313 N.m
7AZ Air-mass sensor on lower section of air filter housingM513.5 N.m
Air-mass flow sensor to cylinder head coverM47 / M47TU / M57 / M57TU4.5 N.m
8AZ Pulse generator, camshaft to cylinder head coverM574.5 N.m
M47TU / M57TU3.5 N.m
9AZ Intake neck on air-mass flow sensorM479 N.m

13 62 SENDERS FOR CONTROL UNIT TIGHTENING SPECIFICATION

13 64 Fuel Injectors

TypeThreadTightening specificationMeasure
1AZ Fuel injector to intake manifoldAllM610 N.m
2AZ Coupling nut on fuel injectorAll / with K-Jetr.25 N.m

13 64 FUEL INJECTORS TIGHTENING SPECIFICATION

13 71 Air intake silencer

TypeThreadTightening specificationMeasure
1AZ Air intake silencer on cylinder head coverM41 / M51M66 N.m
2AZ Clean air pipe to hot-film air-mass flow sensor (hose clamp)M673 N.m
3AZ Intake hood to front wallE53 / M624 N.m

13 71 AIR INTAKE SILENCER TIGHTENING SPECIFICATION

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