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Home >> Chevrolet >> 2008 >> Optra LT, Automatic >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transaxle - ZF 4HP 16 - Service, Overhaul, Removal & Installation, Troubleshooting & Diagnosis >> Mechanical Component Description >> Torque Converter >> Fluid Pump

Fluid Pump

The fluid pump is located between the torque converter and the transaxle case and is driven directly by the torque converter. The pump sucks the fluid through a filter and delivers the fluid to the main pressure regulator valve of the control system. Excess fluid flows back to the pump. The fluid pump fulfills the following functions:

Fig 1: View Of Pump Housing Components
GM1256080Courtesy of GENERAL MOTORS CORP.

The illustration identifies the following components within the pump housing:

  1. Disc
  2. Shaft Seal
  3. Stator Shaft
  4. Pump Wheel
  5. Pump Ring Gear
  6. Dowel Pin