For a view of the oil flow diagram, refer to the 1996 TURM manual.
When the selector lever is in the Park (P) position, oil from the pump is directed to the following locations:
| • | The pressure regulator valve |
| • | The converter and lubrication system |
| • | The pump slide |
| • | The manual valve |
| • | The pressure relief valve |
| • | The line pressure tap |
Oil flows from the pump to the pressure regulator valve. This valve regulates the pump pressure. When the pump output exceeds the demand, oil from the pressure regulator valve is directed to the converter feed passage in order to fill the converter. Oil from the converter is directed to the transmission cooler. Oil from the cooler is directed to the transmission lubrication system.
Oil is also directed from the pressure regulator valve to the pump slide. This decreases pump output to the pressure of the regulator valve spring force: 482 kPa (70 psi). Line pressure acts on the pressure relief valve which will exhaust any oil above 2068-3102 kPa (300-450 psi).
Line pressure at the manual valve is available for use in other drive ranges.
Summary
The converter is filled; all clutches and the band are released. Manual linkage has the parking pawl engaged in the reaction internal gear lugs. The transmission is in Park (P). Line pressure is regulated to approximately 483 kPa (70 psi).
