Kickdown Servo Adjustment
Kickdown Servo AdjustmentDESCRIPTION
The adjust sleeve and the retainer constitute the contacts of the kick-down servo switch. The switch detects the position of the kickdown piston just before the kick-down brake is applied, and sends the signal to the transaxle control module. When the kickdown servo is not in operation, the switch contacts are kept closed. When the hydraulic pressure is applied to the kick-down servo, the piston operates, and the adjust sleeve separates from the retainer, thus turning off the switch. * Switch ON/OFF condition -> ON: 1st gear, 3rd gear -> OFF: 2nd gear, 4th gear
ADJUSTMENT
1. Remove the drain plug (A) and drain the automatic transaxle fluid.
2. Remove the oil pan (A).
3. Remove the oil filter (A).
4. Remove the fluid temperature sensor (A).
5. Press the tab of the solenoid valve harness grommet tab (A) and push in.
6. Remove the valve body assembly (A). The manual valve can come out, so be careful not to drop it.
7. Turn the adjustment screw (A) 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)
8. Check to be sure that the O-ring is installed on the upper surface of the valve body at the place.
9. Replace the O-ring (A) of the solenoid valve connector with a new one.
10. 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. Also be careful that the lead wiring isn't caught.
11. Tighten the valve body assembly mounting bolts to 10-12 Nm (100-120 kgf.cm, 7-8 lb-ft).
12. Install a new oil pan gasket with the oil pan (A).
TORQUE: 10-12 Nm (100-120 kgf.cm, 7-8 lb-ft)
13. Pour in the specified amount of automatic transaxle fluid.
14. Perform the oil pressure test. Readjust if necessary.