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HOMESERVICE MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 970 (CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS - (EXCEPT HYBRID))GENERAL PROCEDURESSPRING LOCK COUPLINGCLEANING
2010 Mercury Mariner Hybrid, AWD

Spring Lock Coupling: Cleaning

2010 Mercury Mariner Hybrid, AWDSECTION Cleaning
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
  1. Fabricate a cleaning tool from a 1/8-inch diameter brazing rod.
    2. Fig 1: Cleaning Tool (With Specifications)
    GF0014363Courtesy of FORD MOTOR CO.
  2. Cut an abrasive pad with the dimensions corresponding to the coupling size.
    Coupling Size Pad Size
    3/8 in 25 x 50 mm (1 x 2 in)
    1/2 in 25 x 50 mm (1 x 2 in)
    5/8 in 25 x 76 mm (1 x 3 in)
    3/4 in 25 x 102 mm (1 x 4 in)
  3. Assemble the pad to the tool.
    4. Fig 2: Assembling Pad To Tool
    G03889985Courtesy of FORD MOTOR CO.
  4. Coat the abrasive pad with PAG oil.
  5. Roll the pad on the tool and install it in a variable speed drill motor.
    6. CAUTION: Maintain low speed drill rotation when inserting or removing the cleaning tool to prevent axial scratches which may cause future leaks.
  6. Polish for one minute at moderate speed (less than 1,500 RPM) or until the surface is clean and free of scratches or foreign material.
    7. Fig 3: Rolling Pad On Tool
    G03889986Courtesy of FORD MOTOR CO.
  7. Clean the fitting with a lint-free cloth.
  8. Inspect the surface for grooves or scratches. If grooves and scratches are still present, install a new component.
  9. Clean the O-ring seal grooves with a 30 cm (1 ft) length of natural fiber string.
    • Loop the string around the grooves and pull the string back and forth.
    10. Fig 4: Cleaning O-Ring Seal Grooves With Natural Fiber String
    G03879247Courtesy of FORD MOTOR CO.
  10. Remove any foreign material from the grooves with a lint-free cloth.
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.