A/T - 440T4 Preliminary Check Procedure

SIL: 86-23 (Oct)

440T4

PRELIMINARY CHECK PROCEDURE

^ CHECK TRANSMISSION OIL LEVEL
^ CHECK AND ADJUST TV. CABLE
^ CHECK OUTSIDE MANUAL LINKAGE AND CORRECT
^ CHECK ENGINE TUNE
^ INSTALL OIL PRESSURE GAUGE*
^ CONNECT TACHOMETER TO ENGINE
^ CHECK OIL PRESSURES IN THE FOLLOWING MANNER:

MINIMUM LINE PRESSURE CHECK




With the brakes applied, take the line pressure readings in the ranges and at the engine R.P.M.'s indicated in the chart.

FULL LINE PRESSURE CHECK
Full line pressure readings are obtained by removing the vacuum line from modulator, and with the brakes applied, take the line pressure readings in the ranges and at the engine R.P.M.'s indicated in the chart.

NOTICE
Total running time not to exceed 2 minutes.

CAUTION
Brakes must be applied at all times.

Line pressure is basically controlled by pump output and the pressure regulator valve. In addition, line pressure is boosted in Reverse, and Lo by the reverse boost valve.

Also, in the Neutral, Drive and Reverse positions of the selector lever, the line pressure should increase with throttle opening because of the vacuum modulator.