BMW X3 Quiz

Ac housing/evaporator, switching elements

In this manual: Ac housing/evaporator, switching elements
General information on preservation measures — 1Body cavity sealing — 1Body corrosion protection — 1Body repair instructions — 1Support members — 1Luggage compartment floor — 1Wheel wells — 1Side frame and door pillars — 1Roof outer skin — 1Dash cowl — 1Front trim panel — 1Rear trim panel — 1Side panels — 1Front side doors — 1Rear side doors — 1Front lid — 1Rear lid — 1Other flaps — 1Body special tools — 1General information — 1Handling brake fluids — 1Brake testing and bleeding — 1Front brakes — 1Rear brakes — 1Master brake cylinder — 1Brake lines — 1Brake booster — 1Electrical components/wear indicator — 1Parking brake — 1Mechanical/hydraulic components — 1Electronic components — 1Brakes — 1Front brake — 1Pedal mounting block — 1Brake pedal with linkage — 1Clutch pedal with linkage — 1Accelerator pedal actuation — 1Pedals — 1Specified grease — 1Propeller shaft, general — 1Propeller shaft assembly — 1Center console assembly — 1Front propeller shaft — 1Propeller shaft — 1Propeller shaft complete — 1Front axle repair instructions — 1Front axle suspension — 1Front sub-frame — 1Struts with rubber mounts — 1Wheel bearings and stub axle — 1Spring strut — 1Spring with suspension — 1Stabilizer bar — 1Front axle gearbox — 1Output shaft — 1Front axle — 1General information on high temperature multi-purpose grease — 1Rear axle repair instructions — 1Final drive with cover — 1Final drive mounting — 1Output shafts — 1Rear sub-frame — 1Control arms and struts — 1Axle mounting — 1Wheel bearings — 1Shock absorber — 1With suspension — 1Stabilizer bar — 1Rear axle — 1General information on final drive oil — 1Approved final drive oils for front and rear axle final drives with and without limited slip or viscous coupling — 1Final drive oil for bmw m1 motorsport coupe — 1Operating fluids as of 11/2015 — 1Brake pad replacement reminder — 1Emissions maintenance reminder — 1Maintenance service reminder — 1Tire pressure monitor system reminder — 1Description — 1Troubleshooting — 1Ignition wires, spark plugs — 1Ignition coil — 1Electronic switching or control units — 1Preheating relay — 1Preheater plugs — 1Alternator with drive and mounting — 1Controller — 1Starter with mounting — 1Starter lead — 1Engine wiring loom — 1Oil pressure/oil temperature/oil gauge — 1Switches and relays — 1Engine electrical system — 1Cabin air filter — 1Cabin air filter applications — 1Operating fluids - air conditioning and heating — 1Air conditioner refrigerant — 1Refrigeration oil — 1Note, overview components climate control — 1Heater with operation — 1Auxiliary. heater with control elements — 1Nozzles and outlets — 1Microfilter — 1Air conditioning, leak detection — 1Ac housing/evaporator, switching elements — 1Compressor — 1Condenser and dryer with lines — 1Heating and air conditioning — 1Front axle repair instructions — 1Front axle suspension — 1Front sub-frame — 1Struts with rubber mounts — 1Wheel bearings and stub axle — 1Spring strut — 1Spring with suspension — 1Stabilizer bar — 1Front axle gearbox — 1Front axle — 1General information on high temperature multi-purpose grease — 1Integrated suspension systems repair instructions — 1Front control and suspension elements — 1Rear control and suspension elements — 1Electrical components — 1Electronic damping force adjustment — 1Integrated suspension systems — 1Approved hydraulic fluids — 1Rear axle repair instructions — 1Final drive — 1Final drive with cover — 1Final drive mounting — 1Output shafts — 1Rear sub-frame — 1Control arms and struts — 1Axle mounting — 1Wheel bearings — 1Shock absorber — 1Springs with suspension — 1Stabilizer bar — 1Rear axle — 1General information on final drive oil — 1Approved final drive oils for front and rear axle final drives with and without limited slip or viscous coupling — 1Final drive oil for bmw m1 motorsport coupe — 1Operating fluids as of 11/2015 — 1Electronic chassis alignment — 1Mechanical steering gear — 1Steering gear with servo unit — 1Steering arms, tie rods, steer. damper — 1Steering column — 1Steering wheel — 1Steering wheel for airbag — 1Pump and oil supply — 1Steering and wheel alignment — 1Wheels — 1Disc wheels (rims) — 1Tires — 1Wheels with tires — 1Tire mounting paste — 1Engine mounting — 1Transmission suspension, automatic. transmission — 1Engine and gearbox suspension — 1Transmission in general — 1Transmission case, oil sump — 1Extension housing, bearings, seal — 1Mechanical attachments — 1Hydr/el control components/elements — 1Oil pump — 1Shift valves, parking lock — 1Torque converter — 1Automatic transmission — 1Automatic transmission fluid for zf-transmission GA8HP45Z / GA8HP50Z / GA8HP70Z / GA8HP90Z / GA8P70H / GA8P75H / GA8HP75Z — 1General information on automatic transmission fluids — 1Approved automatic transmission fluids for initial fillings and correcting fluid levels — 1Checking transmission fluid level — 1Transmission fluid change intervals (if applicable) — 1Transfer case, general — 1Transfer box — 1Transmission shafts — 1Transfer box special tools — 1Transfer box in general (atc 45l) — 1Transmission in general — 1Bearing in housing, sealing ring — 1SELF-DIAGNOSTICS DTCS — 1
~4min read
  • Removing and installing or replacing expansion valve
  • Removing and installing/renewing evaporator
  • Removing and installing/replacing expansion valve (N20, N57)
  • Removing and installing/replacing expansion valve (N55, N47)

Removing and installing or replacing expansion valve

Special tools required:

  • 00 9 030

WARNING: Danger of injury! Refrigerant circuit is under high pressure! Avoid contact with refrigerant and refrigerant oil.

Read and comply with safety instructions:

  • Handling R 134a tetrafluorethane refrigerant .
  • HANDLING REFRIGERANT FLUID

IMPORTANT: Risk of damage! Restart engine only when A/C system has been correctly filled.

Follow NOTES for opening and replacing parts in refrigerant circuit.

NOTE: If air conditioning system is opened for more than 24 hours:

  • Replace DESICCANT INSERT FOR AIR CONDITIONING.

Necessary preliminary tasks:

  • DRAIN OFF AIR CONDITIONING SYSTEM
  • Remove TENSION STRUT FROM SPRING STRUT DOME ON LEFT

Release screws (1).

Detach refrigerant lines (2) from expansion valve (3).

Installation note:

Replace sealing rings.

Use special tool 00 9 030 to install sealing rings without damaging them.

HVAC

Release screws (1).

Remove expansion valve (2) from retaining clip.

HVAC

Installation note:

Place expansion valve (1) exactly on refrigerant lines (2) and (3).

Fit screws of expansion valve (1) and make sure retaining clip (4) is correctly positioned.

HVAC

After installation:

  • EVACUATE AND FILL AIR CONDITIONING SYSTEM

Removing and installing/renewing evaporator

Necessary preliminary work:

  • Remove HEATER/AIR CONDITIONER

Carefully pull rubber grommet (1) and foam seal (2) over pipes (3) and (4).

NOTE: If necessary, replace rubber grommet (1) and/or foam seal (2).

Release screws (5).

HVAC

Unfasten plug connection (1) and disconnect.

Carefully remove seal (2) and all remnants.

Installation note:

Replace gasket (2).

Turn temperature sensor for cold-air distributor (3) in direction of arrow and detach in upwards direction.

Expose connecting cable (4) of temperature sensor for cold-air distributor (3) towards rear of heater/air conditioner (5).

HVAC

Release screws (1).

Remove upper housing (2) of heater/air conditioner in direction of arrow.

Installation note: Make sure upper housing (2) is correctly seated on heater/air conditioner.

HVAC

Pull evaporator (1) in direction of arrow out of lower housing (2) of heater/air conditioner.

Installation note: Make sure evaporator (1) is correctly seated in lower housing (2) of heater/air conditioner.

HVAC

IMPORTANT: Do not bend radiator fins.

If necessary, clean or straighten radiator fins with slat comb.

Removing and installing/replacing expansion valve (N20, N57)

Special tools required:

  • 00 9 030

WARNING: Danger of injury! Refrigerant circuit is under high pressure! Avoid contact with refrigerant and refrigerant oil.

Read and comply with safety instructions:

  • Handling R 134a tetrafluorethane refrigerant .
  • HANDLING REFRIGERANT FLUID

IMPORTANT: Risk of damage! Restart engine only when A/C system has been correctly filled.

Follow NOTES for opening and replacing parts in refrigerant circuit.

NOTE: If air conditioning system is opened for more than 24 hours:

  • Replace DESICCANT INSERT FOR AIR CONDITIONING.

Necessary preliminary work:

  • DRAIN OFF AIR CONDITIONING SYSTEM
  • Remove acoustic cover

Release screws (1).

Detach refrigerant lines (2) from expansion valve (3).

Installation note:

Replace sealing rings.

Use special tool 00 9 030 to install sealing rings without damaging them.

HVAC

Release screws (1).

Remove expansion valve (2) from retaining clip.

HVAC

Installation note:

Place expansion valve (1) exactly on refrigerant lines (2) and (3).

Fit screws of expansion valve (1) and make sure retaining clip (4) is correctly positioned.

HVAC

After installation:

  • EVACUATE AND FILL AIR CONDITIONING SYSTEM

Removing and installing/replacing expansion valve (N55, N47)

Special tools required:

  • 00 9 030

WARNING: Danger of injury! Refrigerant circuit is under high pressure! Avoid contact with refrigerant and refrigerant oil.

Read and comply with safety instructions:

  • Handling R 134a tetrafluorethane refrigerant .
  • HANDLING REFRIGERANT FLUID

IMPORTANT: Risk of damage! Restart engine only when A/C system has been correctly filled.

Follow NOTES for opening and replacing parts in refrigerant circuit.

NOTE: If air conditioning system is opened for more than 24 hours:

  • Replace DESICCANT INSERT FOR AIR CONDITIONING.

Necessary preliminary tasks:

  • DRAIN OFF AIR CONDITIONING SYSTEM
  • Remove intake silencer housing .

Release screws (1).

Detach refrigerant lines (2) from expansion valve (3).

Installation note:

Replace sealing rings.

Use special tool 00 9 030 to install sealing rings without damaging them.

HVAC

Release screws (1).

Remove expansion valve (2) from retaining clip.

HVAC

Installation note:

Place expansion valve (1) exactly on refrigerant lines (2) and (3).

Fit screws of expansion valve (1) and make sure retaining clip (4) is correctly positioned.

HVAC

After installation:

  • EVACUATE AND FILL AIR CONDITIONING SYSTEM

Test yourself

A quick BMW X3 quiz: every answer comes with an explanation and a link to the manual page.