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Heating and Air Conditioning - Tightening Torques - e90 BMW M3 E90

Automatic HVAC System

64 52 A/C compressor

TypeThreadTightening specificationMeasure
1AZ Refrigerant 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
2AZ Filler 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
3AZ A/C compressor to carrierM67TU, M54, N62, S85, N54M821 Nm
N45, N46, M47T2, M57TU, M57T2M819 Nm
N52KM8 x 87Replace aluminium screw/bolt Jointing torque Torque angle10 Nm 180±15°
N52KM8 x 52Replace aluminium screw/bolt Jointing torque Torque angle10 Nm 90±15°
N52M8 x 87Replace aluminium screw/bolt Jointing torque Torque angle10 Nm 180±15°
N53M8 x 52Replace aluminium screw/bolt Jointing torque Torque angle10 Nm 90±15°
N53M8 x 87Replace aluminium screw/bolt Jointing torque Torque angle10 Nm 180±15°
E85 S54, E86 S5420 Nm
4AZ Belt pulley/hub to A/C compressorM47T235±5 Nm
5AZ Bracket, A/C compressor to lower crankcaseN5419 Nm
6AZ Cable holder to A/C compressorM47T23 Nm

TIGHTENING TORQUE SPECIFICATION - A/C COMPRESSOR

64 52 Air conditioning compressor

TypeThreadTightening specificationsDimension
1AZ Refrigerant lines to air-conditioning compressorE70, E71, E72M821 Nm
E60/N47, E61/N47, E81, E82, E87, E88, E90/N47, E91/N47, E92/N47, E84/N47M818.5 Nm
E92/S65M821 Nm
2AZ Oil filler plug, air conditioning compressorE70, E71, E7230 ± 1 Nm
E81/N43, E82, E8825 Nm
3AZ A/C compressor to carrierN52, N52KM8 x 87Replace aluminium screw/bolt Replace! Jointing torque Angle of rotation10 Nm 180±15°
M8 x 52Replace aluminium screw/bolt Replace! Jointing torque Angle of rotation10 Nm 90±15°
N43M823 Nm
N47M819 Nm
N54M819 Nm
N55M819 Nm
M57M819 Nm
N62M821.4 ± 3.2 Nm
N63M821.4 ± 3.2 Nm
S63M821.4 ± 3.2 Nm
4AZ Bracket, pressure line, to compressorE82/N547.6 Nm
5AZ Bearing support, compressor, to crankcaseE70/E7119 Nm
6AZ Electric A/C compressor, to crankcaseE72M821.4 ± 3.2 Nm

TIGHTENING TORQUE SPECIFICATION - AIR CONDITIONING COMPRESSOR

64 52 Compressor

TypeThreadTightening specificationMeasure
1AZ Refrigerant lines to compressorE90, E91, E92M818.5 Nm
2AZ Filler plug, compressorE90, E91, E9230±1 Nm
3AZ Compressor to bracketE90, E91, E92M819 Nm

TIGHTENING TORQUE SPECIFICATION - COMPRESSOR

64 11 Housing, heater/air conditioner

TypeThreadTightening specificationsDimension
1AZ Bulkhead adapterE85, E86, E891.0 ± 0.3 Nm
2AZ Blower for heater/air conditionerE85, E861.5 ± 0.3 Nm
3AZ Controller for heating and air conditioning system blowerE84, E85, E86, E891.0 ± 0.3 Nm
4AZ Air conditioner to bulkheadE60, E61, E63, E64, E83, E81, E82, E87, E88, E90, E91, E92, E936 Nm
E70, E71, E726.5 Nm
5AZ Cooler box to luggage compartment partition wallE65, E66, E674.5 Nm
6AZ Air conditioner to support tubeE81, E82, E84, E87, E88, E90, E91, E92, E939 Nm
7AZ Mounting, positive/negative lead, to electric auxiliary heaterE838.8 Nm

TIGHTENING TORQUE SPECIFICATION - HOUSING, HEATER/AIR CONDITIONER

TypeThreadTightening specificationMeasure
1AZ Bulkhead adapterE85, E86, E891.0 ± 0.3 Nm
2AZ Fan for heater/air conditionerE85, E861.5 ± 0.3 Nm
3AZ Controller for heater - A/C system fanE84, E85, E86, E891.0 ± 0.3 Nm
4AZ Air conditioner to bulkheadE60, E61, E63, E64, E83, E81, E82, E87, E88, E90, E91, E92, E936 Nm
E70, E71, E726.5 Nm
5AZ Cooler box to luggage compartment partition wallE65, E66, E674.5 Nm
6AZ Air conditioner to support tubeE81, E82, E84, E87, E88, E90, E91, E92, E939 Nm
7AZ Mounting, positive/negative lead, to electric auxiliary heaterE838.8 Nm

TIGHTENING TORQUE SPECIFICATION - HOUSING, HEATER/AIR CONDITIONER

64 12 Independent heater

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

TIGHTENING TORQUE SPECIFICATION - INDEPENDENT HEATER

64 53 Refrigerant Lines and Expansion Valve

TypeThreadTightening specificationsDimension
1AZ Refrigerant lines to dryer flaskE83, E85, E86M820 Nm
2AZ Refrigerant lines to expansion valve/double pipeE46, E83, E85, E86, E81, E82, E87, E88, E89, E90, E91, E92, E93M820 Nm
E53M818 Nm
E84M818.5 NM
3AZ Adapter plate to expansion valveE85, E86, E89M610 ± 2 Nm
4AZ Expansion valve to heater - A/CE85, E86, E89M55.5 Nm
5AZ Refrigerant line to heater end panelE85, E86M68.6 Nm
6AZ Refrigerant lines to capacitorE60, E61, E63, E64, E81, E82, E83, E85, E86, E87, E88, E89, E90, E91, E92, E93M820 Nm
E84M818.5 Nm
7AZ Refrigerant lines to expansion valveE60, E61, E63, E64M68.8 Nm
8AZ Refrigerant line to assembly compartment partition reinforcementE60, E61, E63, E64M67.6 Nm
9AZ Expansion valve to heater - A/CE46, E60, E61, E63, E64, E83M55.5 Nm
10AZ Refrigerant line to bodyE46, E83M65.5 Nm
11AZ Double pipe to expansion valveE46, E83M68.0 Nm
12AZ Screw plug to capacitorE53, E81, E82/E84, E87, E88, E90, E91, E923.0 ± 0.5 Nm
13AZ Expansion valve to retaining clipE81, E82, E84, E87, E88, E90, E91, E92, E93M65.5 Nm
14AZ Pressure sensor in refrigerant lineE53, E60, E61, E63, E64, E65, E66, E81, E82, E83, E84, E85, E86, E87, E88, E89, E90, E91, E92, E9310 Nm
15AZ Refrigerant line to adapter leadE60/N53, E61/N53, E63/N53, E64/N53, E60/N54, E61/N5418 Nm

TIGHTENING TORQUE SPECIFICATION - REFRIGERANT LINES AND EXPANSION VALVE

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