What is the location and function of the orifice tube and A/C Expansion Valve in the air conditioning system on Mercury Mariner?

The orifice tube, located in the condenser to evaporator line, changes high pressure liquid refrigerant into low pressure. Before working on the air conditioning system, have it discharged by a professional. For 2007 and earlier models, disconnect the refrigerant line from the condenser to the evaporator, remove the protective cover, release the coupler with a special tool, and use pliers to remove the orifice tube. Discard old O-rings when installing a new tube. For 2008 and later models, remove the expansion valve by detaching the nut from the refrigerant line fittings, removing the block and lines, and discarding the seals. Remove the expansion valve and discard the O-rings. Replace seals and O-rings when reinstalling, and have the system evacuated, recharged, and tested by a professional.

Genuine Mercury Mariner A/C Expansion Valve

Air Conditioning Expansion Valve

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6 A/C Expansion Valves found

View related parts
Mercury Mariner Valve Assy - Evaporator Expansion
Part Number: 6M6Z-19849-AA
$19.13 MSRP: $38.00
You Save: $18.87 (50%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Expansion Valve
- Replaces: 5M6Z-19849-AA, YG-391
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2007 Mercury Mariner | 4 Cyl 2.3L, 4 Cyl 2.3L Hybrid Gas/Electric DOHC, 6 Cyl 3.0L DOHC EFI Modular | 4AT CD4E, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
View related parts
Mercury Mariner Valve Assy - Evaporator Expansion
Part Number: AL8Z-19849-A
$36.25 MSRP: $57.82
You Save: $21.57 (38%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Expansion Valve
- Replaces: 8L8Z-19849-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2008-2011 Mercury Mariner | 4 Cyl 2.3L, 4 Cyl 2.3L Hybrid Gas/Electric DOHC, 4 Cyl 2.5L Duratec (110kW/150PS), 4 Cyl 2.5L PFI Gas/Electric, 6 Cyl 3.0L DOHC EFI Modular, 6 Cyl 3.0L OHC Duratec | 4AT CD4E, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
View related parts
Mercury Mariner Valve Assy - Evaporator Expansion
Part Number: 5M6Z-19849-AA
$19.13 MSRP: $38.00
You Save: $18.87 (50%)
ADD TO CART
Product Specifications
- Replaced by: 6M6Z-19849-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2006 Mercury Mariner | 4 Cyl 2.3L Hybrid Gas/Electric DOHC | CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
View related parts
Mercury Mariner Valve Assy - Evaporator Expansion
Part Number: 8L8Z-19849-A
$36.25 MSRP: $57.82
You Save: $21.57 (38%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaced by: AL8Z-19849-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2008-2009 Mercury Mariner | 4 Cyl 2.3L, 4 Cyl 2.3L Hybrid Gas/Electric DOHC, 4 Cyl 2.5L Duratec (110kW/150PS), 4 Cyl 2.5L PFI Gas/Electric, 6 Cyl 3.0L DOHC EFI Modular, 6 Cyl 3.0L OHC Duratec | 4AT CD4E, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
View related parts
Mercury Mariner Valve Assy - Evaporator Expansion
Part Number: 8M6Z-19849-A
Product Specifications
- Replaced by: 9M6Z-19849-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2008-2009 Mercury Mariner | 4 Cyl 2.3L, 4 Cyl 2.3L Hybrid Gas/Electric DOHC, 4 Cyl 2.5L Duratec (110kW/150PS), 4 Cyl 2.5L PFI Gas/Electric, 6 Cyl 3.0L DOHC EFI Modular, 6 Cyl 3.0L OHC Duratec | 4AT CD4E, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
View related parts
Mercury Mariner Valve Assembly - Evaporator Expansion
Part Number: 9M6Z-19849-A
Product Specifications
- Other Name: Expansion Valve
- Replaces: 8M6Z-19849-A, YG-407
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2008-2009 Mercury Mariner | 4 Cyl 2.3L, 4 Cyl 2.3L Hybrid Gas/Electric DOHC, 4 Cyl 2.5L Duratec (110kW/150PS), 4 Cyl 2.5L PFI Gas/Electric, 6 Cyl 3.0L DOHC EFI Modular, 6 Cyl 3.0L OHC Duratec | 4AT CD4E, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive

Mercury Mariner A/C Expansion Valve Parts Questions & Experts Answers

Valve Assy - Evaporator Expansion
AL8Z-19849-A
Q: What is the location and function of the orifice tube and A/C Expansion Valve in the air conditioning system on Mercury Mariner?
A: The orifice tube, located in the condenser to evaporator line, changes high pressure liquid refrigerant into low pressure. Before working on the air conditioning system, have it discharged by a professional. For 2007 and earlier models, disconnect the refrigerant line from the condenser to the evaporator, remove the protective cover, release the coupler with a special tool, and use pliers to remove the orifice tube. Discard old O-rings when installing a new tube. For 2008 and later models, remove the expansion valve by detaching the nut from the refrigerant line fittings, removing the block and lines, and discarding the seals. Remove the expansion valve and discard the O-rings. Replace seals and O-rings when reinstalling, and have the system evacuated, recharged, and tested by a professional.