Technical Service Information
MANDATORY TOOLS NEEDED FOR CHECKING PRESSURES ON 68RFE
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                                                                Line Pressure Adapter Tool No. 8259, to install into the
                                                                line pressure sensor circuit, and then reinstall the
  Pressure Tap Adapter Tool No. 8258, to check oil              sensor and pressure gage.
  pressures through the valve body taps.
                                                                  VALVE BODY
          Line Pressure                                                                                               Underdrive Clutch
                                                                                                                          Pressure
 Low/Reverse
Clutch Pressure                                                                                                              Reverse Clutch
                                                                                                                               Pressure
                                                       05111
                                           1 AK   4799655
                                                         98
 Overdrive Clutch
    Pressure              4th Clutch                                                                        2nd Clutch
                           Pressure                                                                          Pressure
                                                    Figure 26
                              AUTOMATIC TRANSMISSION SERVICE GROUP                                                                        27