Reducing Pressure Adjustment

Reducing Line Pressure (If the Multi-Use Tester is not available)





1. Remove parts up to the oil filter in the same way as for adjustment of the line pressure. The valve body need not be removed.
2. Turn the adjustment screw of the lower valve body and adjust so that the reducing pressure is the standard value. When the adjustment screw is turned to the right, the reducing pressure becomes lower; when it is turned to the left, it becomes higher.

Note: When adjusting the reducing pressure, aim for the center value (425 kpa, 60 psi) of the standard value allowance.

Standard value:
420 +/- 20 kPa (60 +/-1 psi, 4.311 kg/cm)
Oil pressure change for each turn of the adjustment screw:
22 kPa (4.3 psi, 0.3 kg.cm)

3. Install the oil filter and oil pan in the same way as for adjustment of the line pressure.
4. Make the oil pressure test. Readjust if necessary.

(If the Multi-Use Tester is used)
1. Adjust the PC solenoid so that the kickdown brake pressure is the standard value when activated to 50% duty by the Multi-Use Tester.

Standard value:
320 +/- 30 kPa (39 +/-1 psi, 2.8 +/-1 kg/.cm)
Oil pressure change for each turn of the adjustment screw:
30 kPa (3 psi, 0.2 kg/cm)

2. Check to be sure that the reducing pressure (after the adjust- ment is completed) is within the range of 370-490 kPa (53-70 psi, 3.8-5.0 kg/cm)

Caution: This adjustment should be made at an oil temperature of 70-80 C (160-180 F). If the adjustment is made at a temperature that is too high, the line pressure will drop during idling, with the result that it might not be possible to make the correct adjustment.