Hyundai Sonata 1991 Shop Manual page 431

1. Completely remove all dirt and other materials adhered
around the kickdown servo cover.
2. Remove the kickdown servo switch.
3. Remove the snap ring and cover.
4. Loosen the lock nut.
ADJUSTMENT OF KICKDOWN SERVO
GENERAL
Y45CllA
5.
While holding with special tool
(09454-33000)
so that the
kickdown servo piston won't turn, use special tool
(09454-33100)
to "tighten", at
9.8
Nm
(100
kg.cm, 7.2
Ib.ft), and "return" the adjustment screw two times each, and
then tighten at a torque of 4.9 Nm (50 kg.cm, 3.6 Ib.ft). Then
return the adjustment screw 2 to 2-1/4 turns.
6. While holding with special tool (09454-33000) so that the
kickdown servo piston won't turn, tighten the lock nut to the
specified torque.
Loek nut: 25-32 Nm (255-326 kg.em, 18-23 Ib.ft)
7. After fitting a new O-ring in the groove around the cover,
install the cover to the case so that the O-ring won't be
twisted, and then install the snap ring.
8. Install the kickdown servo switch to the cover.
Kiekdown servo switeh screw:
1.0-1.4 Nm (10.2-14.3 kg.em, 0.7-1.0 Ib.ft)
\
0945~-33100 O~454-33000~
1. Drain out the ATF.
2. Remove the oil pan.
3. Remove the oil filter and oil temperature sensor.
4. Remove the valve body assembly. The manual valve can
come out, so be careful not to drop it.
5. Turn the adjustment screw of the regulator valve and adjust
so that the line pressure (kickdown brake pressure) becomes
the standard value.
ADJUSTMENT OF LINE PRESSURE
Y45C21A
45-42