Subaru SVX 1992 Manual page 456

3- 2 [M22B2]
AUTOMATIC TRANSMISSION AND DIFFEREN TIAL
2. 3-2 TIMING CONTROL
When shifting from 3rd to 2nd, the high clutch is
disengaged . At the same time, oil pressure (which
releases the brake band) is also released from the servo
piston 3rd release chamber (3R) .
At this point, the servo piston moves to release oil
pressure from the 3rd release chamber (3R) and apply
oil pressure to the 2nd apply chamber. This causes the
brake band to be applied. In other words, high clutch
"release" and brake band "application" are properly
timed by electronic control. This eliminates engine
rev-up under no load or hesitation .
Servo piston 3rd
release chamber
High clutch
oil pressure
apply pressure
©
OA
Orifice
1
3-2 timing valve
(in conduction)
Timing control
solenoid (shift
solenoid 3)
Shift valve B
TCU
nX
Drain
Solenoid 2 x
B3-513
Fig. 60
When the 3-2 timing valve conducts, oil pressure
applied to the 3rd release chamber is quickly re-
leased through passage ® .
0 When the 3-2 timing valve does not conduct, oil
pressure applied to the 3rd release chamber is slowly
released through passage ® (provided with an ori-
fice) .
82