Ford Mustang Service Manual: Planetary Gear Support Assembly and Planetary One-Way Clutch

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


    Assembly
    Disassembly 1. Inspect the clutch cylinder thrust surfaces, piston bore and clutch plate serrations for scores or burrs. Minor scores or burrs may be removed with crocus cloth. Install a new clutch ...

    Reverse Sun Gear
    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:

    Pinpoint Test N: DTC B1869 - Air Bag Indicator Inoperative
    Pinpoint Test A: The Air Bag Warning Indicator Is Illuminated Continuously - RCM Disconnected, Inoperative or Lost/Low Ignition Feed Normal Operation NOTE: During normal operation the air bag indicator will be lit continuously for 6 seconds after the ignitio ...

    Warning Indicator Bulb
    Instrument Cluster (Removal and Installation) Removal and Installation All vehicles 1. CAUTION: Electronic modules are sensitive to electrical charges. If exposed to these charges, damage may result. Disconnect the battery ground cable. For additio ...

    Horn (Diagnosis and Testing)
    Horn (Diagnosis and Testing) Refer to Wiring Diagrams Cell 44 , Horns/Cigar Lighter for schematic and connector information. Special Tool(s) 73 Digital Multimeter or equivalent 105-R0051 Inspection and Verification 1. Verify the cust ...