Ford Mustang (1999-2004) Service Manual: 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

4R70W Automatic Transmission

    Automatic Transaxle/Transmission
    General Specifications a - MERCON V is not interchangeable at this time with the current MERCON fluids. Check the transmission fluid level indicator to determine the correct fluid and refer to the ...

    Identification Tags
    All vehicles are equipped with a Vehicle Certification Label, located on the driver side door lock post. For correct transmission identification, refer to the code in the space marked TR. ...

    Other materials:

    Clutch (Description and Operation)
    The primary function of the clutch is to couple and uncouple engine power to the transmission upon driver command. The clutch is a single plate, dry friction clutch disc. The clutch disc has a splined hub (with integral torsional dampening springs ...

    Range Selection
    The transmission has six range positions: P, R, N, (D), 2 and 1. Park In the PARK position: there is no powerflow through the transmission. the parking pawl locks the output shaft to the case. the engine can be started. the ignition key can ...

    Piston - Ring End Gap
    CAUTION: Use care when fitting piston rings to avoid possible damage to the piston ring or the cylinder bore. CAUTION: Piston rings should not be transferred from one piston to another. NOTE: Cylinder bore must be within specification for taper and out-of ...