Subaru SVX 1992 Manual page 419

3- 2 Inn1sCO]
AUTOMATIC TRANSMISSION AND DIFFERENTIAL
C: F U N C TION
Name
Function
Pressure regulator valve
Pressure regulator plug
Regulates the pressure of oil delivered from the oil pump to an optimum level (line pres-
Pressure regulator sleeve plug
sure) corresponding to vehicle running conditions .
Pressure modifier valve
An auxiliary valve for the pressure regulator valve . This valve adjusts pressure used to
regulate line pressure to an optimum level corresponding to running conditions .
Pressure modifier accumulator piston
Smoothes the pressure regulated by the pressure modifier valve to prevent pulsation in
line pressure .
Pilot valve
Creates the constant pressure (pilot pressure) necessary to control line pressure, lock-up,
overrunning clutch, 3- 2 timing, and gearshift operations from line pressure .
Accumulator control plug
Accumulator control sleeve
Adjusts accumulator back pressure to correspond to running conditions .
Delivers line pressure to each circuit corresponding to the selected position .
Manual valve
Cir-
cuit
Range
P
R
0
N
D 0
3 0
2
0 0
1
0 0 0
Line pressure
P RN D321 T ,
_,1
t-L .J
J) 1)
B3-484
Fig. 39
When the valve is set in the "line pressure no delivery" position,
the pressure is relieved.
Simultaneously changes three different oil passages using shift solenoid 1 output pressure
Shift valve A
corresponding to such operating conditions as vehicle speed and throttle opening . Com-
bined with shift valve B, this valve permits automatic shifting of 1st ;=k 2nd ;::k 3rd -_ 4th
speeds .
Simultaneously changes three different oil passages using shift solenoid 2 output pressure
Shift valve B
corresponding to such operating conditions as vehicle speed and throttle opening . Com-
bined with shift valve A, this valve permits automatic shifting of 1st ;:± 2nd ;=t 3rd r 4th
speeds .
Changes the 3-2 timing control and overrunning clutch control oil passages corresponding
Shuttle shift valve
to the throttle opening . When the throttle is wide open, the overrunning clutch becomes
inoperative to prevent interlocking at 4th speed .
Changes oil passages so as to prevent simultaneous operation of the overrunning clutch
Overrunning clutch control valve
I when the brake band is actuated at 4th speed . (Operation of overrunning clutch at "D"
range 4th speed results in interlocking .)
28