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 pressure relief valve |
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).
Park (Engine Running)
