Ford Mustang (1999-2004) Service Manual: Geartrain

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, four forward ratios and one reverse ratio are obtained and transmitted to the output shaft. The ratios are as follows:

Geartrain

  • Components of the geartrain can be held by bands or clutches and driven by clutches only.

The 4R70W uses:

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

Planetary Gearset

The planetary gearset in the transmission is a Ravigneaux-type set consisting of the following components:

  • forward clutch sun gear
  • reverse clutch sun gear
  • a pinion carrier
  • long and short pinions
  • output ring gear

Components are held or driven to produce forward and reverse gear ratios.

Input Shaft

The forward clutch cylinder and shaft transfers speed and torque from the converter turbine to the geartrain. This shaft is splined to the turbine on one end and to the forward clutch sun gear and stub shaft on the other end.

Stub Shaft

The stub shaft transfers power from the input shaft to the planet carrier (through the direct clutch) during third and fourth gear operation.

Output Shaft

The output shaft provides torque to the driveshaft and rear axle assembly. It is driven by the ring gear of the planetary gearset.

    Torque Converter (Description and Operation)
    The torque converter transmits and multiplies torque. The torque converter is a four-element device: impeller assembly turbine assembly reactor assembly clutch and damper assembly ...

    Apply Components
    There are eight apply components used to drive or hold the planetary gearset components. Band-Overdrive   1. The overdrive band holds the reverse clutch drum stationary in fourth gear an ...

    Other materials:

    Information
    Under the Information menu, you can access features such as Where Am I? and Sirius Travel Link, view your calendar, see system information and get basic system help. Press the I (Information) hard button to access these features. Where Am I? Press the I butt ...

    Pinpoint Test D: LFC 15/DTC B 1887- Driver Air Bag Circuit Shorted to Ground
    Normal Operation The restraints control module (RCM) checks for driver air bag circuit shorts to ground by monitoring the voltage of circuits 614 (GY/OG) and 615 (GY/WH) at pins 3 and 4. If the RCM detects a short to ground on either of these pins, it w ...

    Disassembly
    Initial disassembly 1. Remove the differential housing cover (4033) and drain the lubricant into a suitable container. 2. Wipe the lubricant from the internal working parts and inspect the parts for wear and damage. 3. Using the special tool, measure and n ...