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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 1056 (Automatic Transaxle Overhaul & Diagnostics) >> Re5F22A >> A/T Control System >> Shift Mechanism >> Power Transmission >> "D" positions 4th gear

"D" positions 4th gear

WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
  1. Input shaft rotates clockwise.
  2. Forward clutch operates. (Connect input shaft to main rear internal gear.)
  3. Main rear internal gear rotates clockwise.
  4. Main rear planetary pinion gear rotates itself clockwise.
  5. Main front large planetary pinion gear rotates itself clockwise for rear planetary pinion and one.
  6. 2nd brake and 2nd coast brake operates.
  7. One-way clutch No. 1 operates. (Lock rotation of main sun gear.)
  8. Main planetary carrier revolves clockwise due to reaction force of front large planetary pinion gear.
  9. Counter drive gear rotates clockwise for main planetary carrier and one.
  10. Counter driven gear rotates counterclockwise.
  11. U/D front internal gear rotates counterclockwise for counter driven gear and one.
  12. U/D clutch operate. (Connect U/D sun gear to U/D front planetary carrier.)
  13. U/D front planetary pinion gear cannot rotate itself, and U/D unit rotates counterclockwise as one.
  14. Output shaft rotates counterclockwise for U/D unit and one.
  15. Final gear clockwise.
    • During deceleration, driving force is connected to input shaft directly without one-way clutch. Therefore, engine brake operates.
Fig 1: A/T Control System Power Transmission 4St Gear Diagram
G00746413Courtesy of NISSAN MOTOR CO., U.S.A.
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