Transaxle Description

Fig 1: 4F50N Automatic Transaxle

Courtesy of FORD MOTOR CO.

The 4F50N (AX4N) automatic transaxle is a four-speed unit with electronic shift control. It is designed for operation in a transverse powertrain for front-wheel drive vehicles and has the following major components:

• case with chain cover
• chain drive
• apply components:
  • two friction bands: overdrive, coast
  • five friction clutches: forward, direct, intermediate, reverse, low-intermediate
  • three one-way clutches: low, direct, low-intermediate
• two simple planetary gearsets:
  • front
  • rear
• final drive planetary gearset
• differential
• pump assembly
• main control