Line Pressure Adjustment

Drain out the automatic transaxle fluid.

Fig 1: Locating Drain Plug
Courtesy of HYUNDAI MOTOR CO.
Remove the oil pan.

Fig 2: Locating Oil Pan Bolts
Courtesy of HYUNDAI MOTOR CO.
Remove the oil filter.

Fig 3: Locating Oil Filter
Courtesy of HYUNDAI MOTOR CO.
Remove the oil-temperature sensor.

Fig 4: Locating Oil Temperature Sensor
Courtesy of HYUNDAI MOTOR CO.
Press the tab of the solenoid valve harness grommet and push in.

Fig 5: Pressing Tab Of Solenoid Valve Harness Grommet
Courtesy of HYUNDAI MOTOR CO.
Remove the valve body assembly. The manual valve can come out, so be careful not to drop it.

Fig 6: Removing Valve Body Assembly
Courtesy of HYUNDAI MOTOR CO.
Turn the adjustment screw of the regulator valve and adjust so that the line pressure (kickdown brake pressure) reaches the standard value. When the adjustment screw is turned clockwise, the line pressure becomes lower; when it is turned counter-clockwise, it becomes higher.
Standard value:

860~900 kPa (122~129 psi, 8.77~9.18 kg/cm² )

Oil pressure change for each turn of adjustment screw:

38 kPa (5.4 psi, 0.39 kg/cm² )

Fig 7: Locating Adjusting Screw
Courtesy of HYUNDAI MOTOR CO.
Check to be sure that the O-ring is installed on the upper surface of the valve body in it's proper place.
Replace the O-ring of the solenoid valve connector with a new one.
Install the valve body assembly to the case and then insert the solenoid valve connector into the case. Be sure, at this time, that the notched part of the connector faces as shown in the figure. Also be careful that the lead wiring isn't caught.

Fig 8: Installing Valve Body Assembly To Case
Courtesy of HYUNDAI MOTOR CO.
Tighten the valve body assembly mounting bolts to 10~12 Nm (100~120 kg.cm, 7-9 lb.ft).
Install the oil filter.

Fig 9: Installing Oil Filter
Courtesy of HYUNDAI MOTOR CO.
Install a new oil pan gasket with the oil pan.
Add the specified amount of automatic transaxle fluid.
Perform the OIL PRESSURE TEST . Readjust if necessary.