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#Transmission parts manual

#Transmission parts manual

In a manual transmission, gears slide along shafts as you move the shift lever from one position to another, engaging various sized gears as required in order to provide the correct gear ratio.

The Computer which controls shift points on newer vehicles and directs electrical solenoids to shift oil flow to the appropriate component at the right instant.Īutomatic transmissions contain many gears in various combinations.The Governor and the Modulator or Throttle Cable monitor speed and throttle position in order to determine when to shift.The Torque Converterwhich acts like a clutch to allow the vehicle to come to a stop in gear while the engine is still running.

Seals and Gaskets are used to keep the oil where it is supposed to be and prevent it from leaking out.

The Hydraulic System which uses a special transmission fluid sent under pressure by an Oil Pump through the Valve Body to control the Clutches and the Bands in order to control the planetary gear sets.

Planetary Gear Sets which are the mechanical systems that provide the various forward gear ratios as well as reverse.

The main components that make up an automatic transmission include: We try to use simple, generic explanations where possible to describe these systems but, due to the complexity of some of these components, you may have to use some mental gymnastics to visualize their operation. The modern automatic transmission consists of many components and systems that are designed to work together in a symphony of clever mechanical, hydraulic and electrical technology that has evolved over the years into what many mechanically inclined individuals consider to be an art form.