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

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:
Assembly
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 cylinder if
badly scored or damaged.
2. Check the fluid passage in the ...
Assembly
1. CAUTION: Before beginning assembly, carry out and inspect the
following:
When building up subassemblies and assembling the transmission, ALWAYS use new
gaskets and seals.
All fasteners must be tightened to the torque specification indicated. In
addition ...
Inspection and Verification
Certain axle noise or vibration symptoms are also common to the engine,
transmission, wheel
bearings, tires, and other parts of the vehicle. For this reason, be sure that
the cause of the trouble is
in the axle before disassembling, adjusting or repairing th ...
