Index Chrysler Chrysler Town & Country/Voyager, Dodge Caravan, Plymouth Voyager - service repair manual 1992 year
|
|
LOCKUP TORQUE CONVERTER The lockup torque converter is standard on all ve- hicles. The lockup mode is activated only in direct drive HYDRAULIC CONTROL SYSTEM The hydraulic control circuits show the position of the various valves with color coded passages to indicate The hydraulic control system makes the transaxle fully automatic, and has four important functions to The pressure supply system, the pressure regulating valves, the flow control valves, the clutches, and band Taking each of these basic groups or systems in turn, the control system may be described as follows: PRESSURE SUPPLY SYSTEM The pressure supply system consists of an oil pump driven by the engine through the torque converter. The PRESSURE REGULATING VALVES The pressure regulating valve controls line pressure dependent on throttle opening. The governor valve The throttle valve transmits regulated pressure to the transaxle (dependent on throttle position) to con- FLOW CONTROL VALVES The manual valve provides the different transaxle drive ranges as selected by the vehicle operator. The 1-2 shift valve automatically shifts the transaxle from first to second or from second to first, depending The 2-3 shift valve automatically shifts the transaxle from second to third or from third to second depending The kickdown valve makes possible a forced down- shift from third to second, second to first, or third to The shuttle valve has two separate functions and performs each independently of the other. The first is and smooth front clutch engagement when the driver The by-pass valve provides for smooth application of the kickdown band on 1-2 upshifts. The lockup solenoid allows for the electronic control of the lockup clutch inside the torque converter. It also The switch valve directs oil to apply the lockup clutch in one position and releases the lockup clutch in the CLUTCHES, BAND SERVOS, AND ACCUMULA- The front and rear clutch pistons, and both servo pistons are moved hydraulically to engage the clutches The accumulator controls the hydraulic pressure on the apply side of the kickdown servo during the 1-2 GEARSHIFT AND PARKING LOCK CONTROLS The transaxle is controlled by a ‘‘lever type’’ gearshift incorporated within the steering column. The control TORQUEFLITE DIAGNOSIS AND TESTS Automatic transaxle malfunctions may be caused by four general conditions: (1) Poor engine performance checking the easily accessible variables: fluid level and . TRANSAXLE 21 - 33 |