Description And Operation: Geartrain: Notes

2005 Ford Taurus SEL, 4D SedanSECTION Notes
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.

Power is transmitted from the torque converter to the Ravigneaux geartrain components through the input shaft and forward clutch cylinder.

  • The geartrain contains a Ravigneaux planetary set connected by dual pinion gears.
  • By holding or driving certain components of the gearset, 4 forward ratios and one reverse ratio are obtained and transmitted to the output shaft. The ratios are as follows:
    GEAR RATION SPECIFICATION

    Gear Ratio
    1st 2.84 to 1
    2nd 1.55 to 1
    3rd 1.00 to 1
    4th 0.70 to 1
    Reverse 2.32 to 1
  • Components of the geartrain can be held by bands or clutches and driven by clutches only.

This transmission uses:

  • two bands.
  • two one-way clutches (one roller, one mechanical diode).
  • four friction clutches.
RENDER: 1.0x

NO RELATED

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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.