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:
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 ...
