Gearbox Casing

Refer to JATCO Automatic Gearbox illustration. See Figure .

The gearbox casing contains the input shaft transmitting the power into the drive train. The drive train is made up of the planetary gear sets and clutches.

The clutches and brake bands control which elements of the planetary gear sets are engaged and their direction of rotation, to produce the P and N selections, five forward ratios and one reverse gear ratio. See GEAR RATIOS  table. Power output is from the drivetrain through a reduction gear into a differential.