Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 274 (HVAC CONTROL SYSTEM - GENERAL INFORMATION & DIAGNOSTICS)GENERAL PROCEDURESSPRING LOCK COUPLINGCONNECT

2010 Mercury Mariner Hybrid, AWD

Spring Lock Coupling: Connect

2010 Mercury Mariner Hybrid, AWDSECTION Connect

WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

Install the A/C tube lock coupling spring.

Fig 1: Installing Spring Lock Coupling Spring
Courtesy of FORD MOTOR CO.
Lubricate the inside of the coupling with refrigerant compressor oil.

Fig 2: Identifying Coupling Inside Area For Lubrication
Courtesy of FORD MOTOR CO.

CAUTION: Use only the new O-ring seals. The use of any O-ring seals other than those specified in the Ford Master Parts Catalog may result in intermittent leakage during vehicle operation.

Install the O-ring seals.
- Lubricate the O-ring seals with refrigerant compressor oil.
  
  Fig 3: Installing O-Ring Seals
  Courtesy of FORD MOTOR CO.
Connect the spring lock coupling fittings with a twisting motion until the A/C tube lock coupling spring snaps over the flared end of the female fitting.

Fig 4: Connecting Spring Lock Coupling Fittings
Courtesy of FORD MOTOR CO.
Install the A/C tube lock coupling clip.

Fig 5: Installing A/C Tube Lock Coupling Clip
Courtesy of FORD MOTOR CO.

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.