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Engine Electrical System - Tightening Torques (n52) BMW X5 E70

Gauges & Instrument Panels ~175 words

12 12 Spark Plugs

TypeThreadTightening specificationMeasure
1AZ Spark plugs (ungreased)AllM12x1.2523 ± 3 Nm
AllM14x1.2530 ± 3 Nm

TECHNICAL DATA - SPARK PLUGS

12 14 Electronic Shift Units or Control Units

TypeThreadTightening specificationMeasure
1AZ Knock sensorN62 / N62TU / N73M8-8.821 ± 1 Nm

TECHNICAL DATA - ELECTRONIC SHIFT UNITS OR CONTROL UNITS

12 31 Alternator with Drive and Mounting Parts

TypeThreadTightening specificationMeasure
1AZ Wires to alternator
Terminal D+M10 / M205 Nm
All / othersM67 Nm
Terminal B+S38 / B388 Nm
All / othersM813 Nm
2AZ PulleyAll45 Nm
3AZ Pulley (ribbed drive belt)Alternator with cooling jacket80 Nm
All others70 Nm
N42, N46 Valeo75 Nm
N42, N46 Bosch65 Nm
4AZ Rear holderAll3.5 Nm
5AZ Fillister head screw for wire holderAll3.5 Nm
6AZ Alternator on bearing blockM40/M42 / M43 / M4443 Nm
7AZ Alternator to crankcaseN42, N46, N62M821 Nm
8AZ Belt pulley (ribbed V-belt) with freewheel (Ina) fitted to Bosch and Valeo alternatorsN42, N4380 Nm

TECHNICAL DATA - ALTERNATOR WITH DRIVE AND MOUNTING PARTS

TypeThreadTightening specificationMeasure
1AZ Alternator to crankcaseM1038 Nm
2AZ Threaded support sleevesM16 x 1.53 Nm
3AZ Belt pulley (ribbed V-belt) with freewheel (Ina) fitted to Bosch and Valeo alternators80 Nm

TECHNICAL DATA - ALTERNATOR WITH DRIVE AND MOUNTING PARTS

12 32 Governor

TypeThreadTightening specificationValue
1AZ Regulator switchAllM42 Nm
AllM54 Nm

TECHNICAL DATA - GOVERNOR

12 41 Starter and Mounting Parts

TypeThreadTightening specificationMeasure
1AZ Starter motor mounting to transmission bell housingAll, except N51, N52, N52K, N53, N5445 Nm
2AZ Support to starterAllM55 Nm
3AZ Support to crankcaseAll47 Nm
4AZ Electrical leads to starter
AllM55 Nm
AllM67 Nm
AllM813 Nm
5AZ Bolt connection, pole tubeAllM66 Nm
6AZ Heat shield to starter motorM66 Nm

TECHNICAL DATA - STARTER AND MOUNTING PARTS

12 41 Starter motor with mounting

TypeThreadTightening specificationMeasure
1AZ Heat shield to starterN62TUM66 Nm
2AZ Starter motor to transmissionN62TUM1043 Nm

TECHNICAL DATA - STARTER MOTOR WITH MOUNTING

12 42 Starter cable

TypeThreadTightening specificationMeasure
1AZ Assembly, starter/alternator cable to alternator terminal B+N62TUM821 Nm
2AZ Assembly, starter/alternator cable to starter terminal 30N62TUM813 Nm
3AZ Assembly, starter/alternator cable to supply support pointN62TUM8Flange nut15 Nm
4AZ Assembly, grounding cable to engine support frameN62TUM821 Nm
5AZ Assembly, grounding cable to engine frame side memberN62TUM821 Nm
6AZ Assembly, B-jump-start connection pointN62TUM8Flange nut15 Nm
7AZ Assembly, engine wiring harness to ground support point, spring strut domeN62TUM821 Nm
8AZ Assembly, ignition module ground to ZKHN62TUM55 Nm

TECHNICAL DATA - STARTER CABLE

12 42 Wires to starter

TypeThreadTightening specificationMeasure
1AZ Battery positive terminal in/on distribution boxE32 / E34 / E31 / E36 / E46 / E87 / E90 / E85 / E86 / E81M820 Nm
E39 / M57M811 Nm
E38 / M67M811 Nm
E46 / M47TUM811 Nm
E60 / N62M815 Nm
E65 / N62 / N73M815 Nm
2AZ Wiring harness on distributorE36 / M41M810 Nm

TECHNICAL DATA - WIRES TO STARTER

52 Plug connections, terminals, loose parts

TypeThreadTightening specificationMeasure
1AZ Holder, wiring harness, to cylinder headN52 / N52K / N54M6x128 Nm
2AZ Cable duct to cylinder head coverN52 / N52K / N53 / N54M6Replace screws3 Nm + 45 degrees
3AZ Ground cable to crankcase (electr. coolant pump)N52 / N54 / N52K / N51 / N53M8Replace screws8 Nm + 45 degrees
4AZ Assembly: holder, monitor sensorsN54M6x128 Nm

PLUG CONNECTIONS, TERMINALS, LOOSE PARTS

12 61 Oil pressure, oil temperature, oil level display

TypeThreadTightening specificationMeasure
1AZ Oil-pressure switch/oiltemperature switchAllM12x1.527 Nm
2AZ Level switch for engine oilN62 / N73 / M67TUJointing torque 2 Nm8.5 Nm
3AZ Oil pressure switchN46M12 x 1.527 Nm
4AZ Level sensor to oil sumpN46M69 Nm

TECHNICAL DATA - OIL PRESSURE, OIL TEMPERATURE, OIL LEVEL DISPLAY

12 62 Coolant Temperature

TypeThreadTightening specificationMeasure
1AZ Temperature sensor to water flange (glow time/coolant temperature gauge)M2118 Nm
M5113 Nm
2AZ Temperature switch (5.5°C / 17°C) to fuel filter/cylinder headM2118 Nm
3AZ Coolant temperature sensor (2-pin plug-in connection)S38 / S5013 Nm
S85M12 / 1.5213.5 Nm
All / others20 Nm
4AZ Remote thermometer sensor (2- pin plug-in connection)All20 Nm
Remote thermometer sensor (4- pin plug-in connection)M6216 Nm
S62M12 x 1.514 Nm
5AZ Remote thermometer sensor on coolant flangeS5018 Nm
6AZ Temperature sensor - airS38 / S5013 Nm
7AZ Temperature sensor - oilS38 / S5013 Nm

TECHNICAL DATA - COOLANT TEMPERATURE

12 72 Senders for Control Unit

TypeThreadTightening specificationMeasure
1AZ Lever to pedal value senderE32 / E34 / E31 / E369 Nm
2AZ Pedal value sender to pedal consoleE32 / E34 / E315 Nm

TECHNICAL DATA - SENDERS FOR CONTROL UNIT

12 90 Control Unit Housing

TypeThreadTightening specificationMeasure
1AZ Assembly of upper and lower sectionsE32 / E34 / E365 Nm
2AZ Center section to bodyE32 / E343 Nm
3AZ Control unit holder in E boxE365 Nm
4AZ Control unit box coverE38 / E39 / E524 Nm
E466 Nm
E53 / E36/7 / E543 Nm
5AZ Electronics box to firewallE65Plastic screw6 Nm

TECHNICAL DATA - CONTROL UNIT HOUSING

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