It shows hydraulic operated clutch used in connector type of automatic transmission. The clutch action is applied by hydraulic pressure, while it is released by the spring action.
It consists of 4 or 5 set of clutch plates splined to the clutch hub driver by the input shaft. The plates attached to the drum are fitted alternately between the driving disc To form an apply chamber between the hub and the drum back. a piston is fitted between the drum hub and inside of drum. From openings in the drum hub, the oil enters the apply chamber. When the clutch is released the oil apply pressure is cut off and the piston is pushed back by the release spring. The movement of the pistons forces both ses of plates into contact due to the oil pressure on the clutch, producing a direct drive.
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