CLARK FORKLIFT IC102 Power Train Introduction TECHNICAL TRAINING MANUAL

Page 9

Turbine The turbine is enclosed in the torque converter and is splined to the input shaft of the transmission. It is driven by fluid thrown from the impeller. Thus, the turbine transmits horsepower and torque from the engine and impeller to the transmission. Stator

The stator, which is mounted on a one-way sprag clutch, is also enclosed in the torque converter. The stator and sprag clutch are mounted on the stationary stator support shaft which is bolted to the transmission case. The sprag clutch contains tiny wedges which allow the stator to rotate only in the direction that the impeller rotates. When fluid hits the stator and tries to turn it in the opposite direction, the wedges lock the stator to the stator support shaft which prevents any reverse rotating. When the stator locks to the shaft, the converter begins to multiply torque. Adaptor

Turbine

Drive

Housing

Plate

Clutch Shaft

Torque Converter How the Converter Multiplies Torque

You can get a better understanding how the converter multiplies torque by tracing the flow of fluid from impeller to turbine, turbine to stator, and stator to impeller from the time the engine is started until the converter no longer multiplies torque. I.When the engine is started, the flywheel turns the impeller. When transmission fluid in the converter hits the impeller's cup blades, the fluid changes direction. The impeller's speed causes the transmission fluid to be hurled from its blades onto the turbine blades forcing them to turn. The fluid flows through the turbine and is thrown from it at high speeds. Copyrighted Material Intended for CLARK dealers only Do not sell or distribute

Power Train Introduction page 7


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