Ford Mustang Service Manual: Reverse Servo Assembly

Transmission Description (Description and Operation)

The 4R70W has the following features:

  • Wide ratio gears
  • Four speeds
  • Rear wheel drive
  • Automatic
  • Electronic shift
  • Torque converter clutch control
  • Line pressure controls

The transmission uses Ravigneaux-style double-pinion gearset with two bands, one one-way roller clutch, one mechanical diode and four friction clutches to produce four forward gears and Reverse.

4R70W Automatic Transmission

Identification Tags


    Digital Transmission Range (TR) Sensor
    Transmission Description (Description and Operation) The 4R70W has the following features: Wide ratio gears Four speeds Rear wheel drive Automatic Electronic shift Torque conver ...

    Overdrive Servo
    Transmission Description (Description and Operation) The 4R70W has the following features: Wide ratio gears Four speeds Rear wheel drive Automatic Electronic shift Torque conver ...

    Other materials:

    Differential Housing Cover
    Rear Drive Axle and Differential   The axle housing assembly consists of a cast center section with two steel tube assemblies and a stamped differential housing cover (4033). The differential housing cover uses silicone sealant as a gasket. ...

    Rear Drive Axle/Differential - Ford 8.8-Inch Ring Gear
    General Specifications Torque Specifications Description Nm lb-ft lb-in Bolt retaining the differential pinion shaft to the differential case 30 22 - Bolt retaining the driveshaft yoke to the pinion flange 112 83 - ...

    Clutch Pedal - Quadrant and Pawl Assembly
    Clutch Controls (Description and Operation)   The clutch control system engages and disengages the clutch. The clutch control system disengages the clutch when the clutch pedal is depressed and engages the clutch when the clutch pedal is released. ...