Center Support: Assembly

2010 Mercury Mariner Hybrid, AWDSECTION Assembly
WARNING: This page is about a different variant/trim than selected.
  1. Clean and inspect the center support for damage. Install a new center support if necessary.
  2. Install the Low Reverse Piston Seal Protector 307-628/1 and 307-628/2 on the center support.
    Fig 1: Identifying Low Reverse Piston Seal Protector (307-628/1) And (307-628/2) On Center Support
    G06377289Courtesy of FORD MOTOR CO.
  3. Lubricate the sealing surfaces of the low/reverse piston with petroleum jelly.
    Fig 2: Locating Sealing Surfaces Of Low/Reverse Piston
    G06377290Courtesy of FORD MOTOR CO.
  4. Position the low/reverse clutch piston on the Low Reverse Piston Seal Protector 307-628/1 and 307-628/2 and push it down into the center support.
    Fig 3: Pushing Low/Reverse Clutch Piston Into Center Support
    G06377291Courtesy of FORD MOTOR CO.
  5. Remove the Low Reverse Piston Seal Protector 307-628/1 and 307-628/2.
    Fig 4: Identifying Low Reverse Piston Seal Protector (307-628/1) And (307-628/2)
    G06377292Courtesy of FORD MOTOR CO.
  6. Install the low/reverse piston return spring.
    Fig 5: Locating Low/Reverse Clutch Return Spring
    G06377293Courtesy of FORD MOTOR CO.
  7. Install the Center Support Piston Spring Compressor 307-630 on the low/reverse piston return spring.
    Fig 6: Identifying Center Support Piston Spring Compressor (307-630) On Low/Reverse Return Spring
    G06377294Courtesy of FORD MOTOR CO.
  8. Using the Center Support Piston Spring Compressor 307-630 and a press, compress the low/reverse clutch return spring and install the snap ring.
    Fig 7: Identifying Center Support Piston Spring Compressor (307-630) And Snap Ring
    G06377295Courtesy of FORD MOTOR CO.
  9. Remove the Center Support Piston Spring Compressor 307-630.
    Fig 8: Identifying Center Support Piston Spring Compressor (307-630) On Low/Reverse Return Spring
    G06377296Courtesy of FORD MOTOR CO.
  10. Inspect the snap ring to be sure it is seated in the groove on the center support.
    Fig 9: Inspecting Snap Ring
    G06377297Courtesy of FORD MOTOR CO.
  11. Turn the center support over and install the Low Reverse Piston Seal Protector 307-628/2 and the Low Reverse/1-2-3-4 Piston Seal Protector 307-629 on the center support.
    Fig 10: Identifying Low Reverse Piston Seal Protector (307-628/2) And (307-629)
    G06377298Courtesy of FORD MOTOR CO.
  12. Lubricate the sealing surfaces of the forward (1, 2, 3, 4) clutch piston with petroleum jelly.
    Fig 11: Locating Sealing Surfaces Of Forward (1, 2, 3, 4) Clutch Piston
    G06377299Courtesy of FORD MOTOR CO.
  13. Position the forward (1, 2, 3, 4) clutch piston on Low Reverse Piston Seal Protector 307-628/2 and the Low Reverse/1-2-3-4 Piston Seal Protector 307-629 and push it down into the center support.
    Fig 12: Positioning Of Forward (1, 2, 3, 4) Clutch Piston On Low Reverse Piston Seal Protector (307-628/2) And (307-629)
    G06377300Courtesy of FORD MOTOR CO.
  14. Remove Low Reverse Piston Seal Protector 307-628/2 and the Low Reverse/1-2-3-4 Piston Seal Protector 307-629.
    Fig 13: Identifying Seal Protector (307-628/2) And (307-629)
    G06377301Courtesy of FORD MOTOR CO.
  15. Install the forward (1, 2, 3, 4) clutch piston return spring.
    Fig 14: Locating Forward (1, 2, 3, 4) Clutch Piston Return Spring
    G06377302Courtesy of FORD MOTOR CO.
  16. Install the Center Support Piston Spring Compressor 307-630 on the forward (1, 2, 3, 4) clutch return spring.
    Fig 15: Identifying Center Support Piston Spring Compressor (307-630) On Forward (1, 2, 3, 4) Clutch Return Spring
    G06377303Courtesy of FORD MOTOR CO.
  17. Using the Center Support Piston Spring Compressor 307-630 and a press, compress the forward (1, 2, 3, 4) clutch return spring and install the snap ring.
    Fig 16: Identifying Center Support Piston Spring Compressor (307-630) And Snap Ring
    G06377304Courtesy of FORD MOTOR CO.
  18. Remove the Center Support Piston Spring Compressor 307-630.
    Fig 17: Identifying Center Support Piston Spring Compressor (307-630) On Forward (1, 2, 3, 4) Clutch Return Spring
    G06377305Courtesy of FORD MOTOR CO.
  19. Inspect the snap ring to be sure it is seated in the groove on the center support.
    Fig 18: Inspecting Snap Ring
    G06377306Courtesy 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:

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