2-62
POWER TRAIN
-
Automatic Transaxle
Reverse
With the manual valve moved to the reverse position,
line pressure is allowed through the manual valve
directly to the reverse clutch and also through the
2-WLR
solenoid to the low/reverse clutch. The regu-
lator valve is designed to increase line pressure
in the reverse gear range above the pressure that
is normal for other ranges. This is done to increase
clutch capacity. Line pressure is directed between
a small valve and larger valve at the right end of
the regulator valve. This neutralizes the effects of
the larger valve on the regulator valve. With only
IL)
the smaller valve working against the regulator
valve, the regulator valve spring further closes down
the vent, causing line pressure to increase. There
are no solenoids energized in the reverse gear
range. However, the
2-4/LR
solenoid is modulated
during initial engagement to smooththe torque tran-
sition and prevent harsh engagement into reverse.
REVERSE
REVERSE
LR(R-N-I)
24(2-4)
B
.
R=LOW
REVERSE
D=UNDERCRIVE
24
q-4
CL”TC”
OD
=OVERDRIVE
-.
_
.-
y
t.1
AC’ACCUhULATOR
CC=CONVERTERCL.
_
..^_
-
.-
PT=PRESSutt
I
A,’
D
=DR,SBLER
LR
=
Low reverse
UD
=
Underdrive
R
=
Reverse
AC
=
Accumulator
PT
=
Pressure tap
S
=
Solenoid
24
=
2-4 clutch
OD
=
Overdrive
SW
=
Switch
CC
=
Converter CL
D
=
Dribbler
V
=
Vent
RESERVOIR
PRESSURE(PSI)
AT
,SOORPM