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Heating and Air Conditioning - Tightening Torques - e92/93 BMW M3 E90

Automatic HVAC System

64 11 Housing, heater/air conditioner

TypeThreadTightening specificationMeasure
1AZBulkhead adapterE85, E86, E891.0 ± 0.3 Nm
2AZFan for heater/air conditionerE85, E861.5 ± 0.3 Nm
3AZController for heater - heating and air conditioning systemE85, E86, E891.0 ± 0.3 Nm
4AZAir conditioner to bulkheadE60, E61, E63, E64, E83, E81, E82, E87, E88, E90, E91, E92, E936 Nm
E70, E716.5 Nm
5AZCooler box to luggage compartment partition wallE65, E66, E674.5 Nm
6AZAir conditioner to support tubeE81, E82, E87, E88, E90, E91, E92, E939 Nm
7AZMounting, positive/negative lead, to electric auxiliary heaterE838.8 Nm

HOUSING, HEATER/AIR CONDITIONER-TIGHTENING TORQUE SPECIFICATIONS

64 12 Additional Heater with Controls

TypeThreadTightening specificationDimension
1AZAdditional heater to body floorAll4.5 Nm
2AZGlow plugE2417.5 Nm
E31/E32/E344 Nm
3AZTemperature sensorE31/E32/E340.5 Nm
4AZOil control plug and oil filler plugAll16 Nm
5AZMounting screwsAllM56 Nm
AllM610 Nm
AllM824 Nm
AllM1048 Nm
6AZScrews for filter coverAll0.9 Nm
7AZCentral cover on heaterAll1.5 Nm
8AZCombustion air fan unit on heaterAll1.5 Nm
9AZRecirculating pump on heaterAll1.5 Nm
10AZControl unit/transfers heat to heater Install screws with Loctite 243All4.5 Nm

ADDITIONAL HEATER WITH CONTROLS-TIGHTENING TORQUE SPECIFICATIONS

64 12 Electric Auxiliary Heater

TypeThreadTightening specificationMeasure
1AZBattery positive and negative leads to auxiliary heaterE46M68.8 Nm

ELECTRIC AUXILIARY HEATER-TIGHTENING TORQUE SPECIFICATIONS

64 12 Independent heater

TypeThreadTightening specificationMeasure
1AZMuffler to independent heater bracketE90, E91, E92, E93M68.0 Nm
2AZMounting, independent heater, to engine carrierE90, E91, E92, E93M67.6 Nm
3AZMounting, independent heater, to locator, cooling moduleE90, E91, E92, E9319.5 Nm
4AZRubber mount to independent heaterE90, E91, E92, E938.0 Nm

INDEPENDENT HEATER-TIGHTENING TORQUE SPECIFICATIONS

64 52 A/C compressor

TypeThreadTightening specificationMeasure
1AZRefrigerant lines to A/C compressorE36/7 M54, E36/7 S54, E38, E39, E46, E52, E53, E60, E61, E63, E64, E65, E66, E67, E83, E85, E87, E90, E91, E92, E93M820 Nm
2AZFiller plug, A/C compressorE36, E38, E39, E46, E52, E53, E60, E61, E63, E64, E65, E66, E67, E83, E85, E87, E90, E91, E92, E9330±1 Nm
3AZA/C compressor to carrierM67TU, M54, N62, S85, N54M821 Nm
N45, N46, M47T2, M57TU, M57T2M819 Nm
N52KM8 x 87Replace aluminium screw/bolt
Jointing torque10 Nm
Torque angle180±15°
N52KM8 x 52Replace aluminium screw/bolt
Jointing torque10 Nm
Torque angle90±15 °
N52M8 x 87Replace aluminium screw/bolt
Jointing torque10 Nm
Torque angle180±15 °
N53M8 x 52Replace aluminium screw/bolt
Jointing torque10 Nm
Torque angle90±15 °
N53M8 x 87Replace aluminium screw/bolt
Jointing torque10 Nm
Torque angle180±15 °
E85 S54, E86 S5420 Nm
4AZBelt pulley/hub to A/C compressorM47T235±5 Nm
5AZBracket, A/C compressor to lower crankcaseN5419 Nm
6AZCable holder to A/C compressorM47T23 Nm

A/C COMPRESSOR-TIGHTENING TORQUE SPECIFICATIONS

TypeThreadTightening specificationMeasure
1AZRefrigerant lines to A/C compressorE70, E71M821 Nm
E60/N47, E61/N47, E81, E82, E87, E88, E90/N47, E91/N47, E92/N47M818.5 Nm
E92/S65M821 Nm
2AZFiller plug, A/C compressorE70, E7130±1 Nm
E81/N43, E82, E8825 Nm
3AZA/C compressor to carrierE70M8 x 1520 Nm
N52, N52KM8 x 87Replace aluminium screw/bolt
Jointing torque10 Nm
Torque angle180±15 °
N52, N52KM8 x 52Replace aluminium screw/bolt
Jointing torque10 Nm
Torque angle90±15 °
E81/N43, E8823 Nm
E82/N47, E90/N47, E91/N47, E92/N4719 Nm
E71/N54M8 x 8519 Nm
E71/M57M8 x 8519 Nm
E71/N63M8 x 9521.4 ±3.2 Nm
E71/N63M8 x 5519 Nm
4AZBracket, pressure line, to compressorE82/N547.6 Nm
5AZBearing block, compressor, to crankcaseE70/E7119 Nm

A/C COMPRESSOR-TIGHTENING TORQUE SPECIFICATIONS

64 52 Compressor

TypeThreadTightening specificationMeasure
1AZRefrigerant lines to compressorE90, E91, E92M818.5 Nm
2AZFiller plug, compressorE90, E91, E9230±1 Nm
3AZCompressor to bracketE90, E91, E92M819 Nm

COMPRESSOR-TIGHTENING TORQUE SPECIFICATIONS

64 53 Refrigerant Lines and Expansion Valve

TypeThreadTightening specificationMeasure
1AZRefrigerant lines to dryer bottleE83, E85, E86M820 Nm
2AZRefrigerant lines to expansion valve/double pipeE46, E83, E85, E86, E81, E82, E87, E88, E89, E90, E91, E92, E93M820 Nm
E53M818 Nm
3AZAdapter plate to expansion valveE85, E86, E89M610 ± 2 Nm
4AZExpansion valve to heating and air-conditioning unitE85, E86, E89M55.5 Nm
5AZRefrigerant line to bulkheadE85, E86M68.6 Nm
6AZRefrigerant lines to condenserE60, E61, E63, E64, E81, E82, E83, E85, E86, E87, E88, E89, E90, E91, E92, E93M820 Nm
7AZRefrigerant lines to expansion valveE60, E61, E63, E64M68.8 Nm
8AZRefrigerant line to assembly compartment partition reinforcementE60, E61, E63, E64M67.6 Nm
9AZExpansion valve to heating and air-conditioning unitE46, E60, E61, E63, E64, E83M55.5 Nm
10AZRefrigerant line to bodyE46, E83M65.5 Nm
11AZDouble pipe to expansion valveE46, E83M68.0 Nm
12AZScrew plug to condenserE53, E81, E82, E87, E88, E90, E91, E923.0±0.5 Nm
13AZExpansion valve to retainerE81, E82, E87, E88, E90, E91, E92, E93M65.5 Nm
14AZPressure sensor in refrigerant lineE53, E60, E61, E63, E64, E65, E66, E81, E82, E83, E85, E86, E87, E88, E89, E90, E91, E92, E9310 Nm
15AZRefrigerant line to adapter lineE60/N53, E61/N53, E63/N53, E64/N53, E60/N54, E61/N5418 Nm

REFRIGERANT LINES AND EXPANSION VALVE-TIGHTENING TORQUE SPECIFICATIONS

TypeThreadTightening specificationMeasure
1AZRefrigerant lines to dryer bottleE83, E85, E86M820 Nm
2AZRefrigerant lines to expansion valve/double pipeE46, E83, E85, E86, E81, E82, E87, E88, E89, E90, E91, E92, E93M820 Nm
E53M818 Nm
3AZAdapter plate to expansion valveE85, E86, E89M610 ± 2 Nm
4AZExpansion valve to heating and air-conditioning unitE85, E86, E89M55.5 Nm
5AZRefrigerant line to bulkheadE85, E86M68.6 Nm
6AZRefrigerant lines to condenserE60, E61, E63, E64, E81, E82, E83, E85, E86, E87, E88, E89, E90, E91, E92, E93M820 Nm
7AZRefrigerant lines to expansion valveE60, E61, E63, E64M68.8 Nm
8AZRefrigerant line to assembly compartment partition reinforcementE60, E61, E63, E64M67.6 Nm
9AZExpansion valve to heating and air-conditioning unitE46, E60, E61, E63, E64, E83M55.5 Nm
10AZRefrigerant line to bodyE46, E83M65.5 Nm
11AZDouble pipe to expansion valveE46, E83M68.0 Nm
12AZScrew plug to condenserE53, E81, E82, E87, E88, E90, E91, E923.0±0.5 Nm
13AZExpansion valve to retainerE81, E82, E87, E88, E90, E91, E92, E93M65.5 Nm
14AZPressure sensor in refrigerant lineE53, E60, E61, E63, E64, E65, E66, E81, E82, E83, E85, E86, E87, E88, E89, E90, E91, E92, E9310 Nm
15AZRefrigerant line to adapter lineE60/N53, E61/N53, E63/N53, E64/N53, E60/N54, E61/N5418 Nm

REFRIGERANT LINES AND EXPANSION VALVE-TIGHTENING TORQUE SPECIFICATIONS

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