Volvo 50-42LE transmission. Instruction - page 10
S1
"ON"
VIEWED FROM THE
WORM TRACK SIDE
n.c.
STH (epc)
SL
"OFF"
X
X
X
X
X
X
X
X
X
X
X
.039" balance
orifice thru valve
PRESSURE CONTROL
SOLENOID REG. VALVE
MANUAL VALVE
2-3 SHIFT
VALVE
3-4 SHIFT
VALVE
1-2 SHIFT
VALVE
NEUTRAL CONTROL
VALVE (Blocked)
CLUTCH MODULATOR
VALVE
TCC SOLENOID
REGULATOR VALVE
PRESSURE REGULATOR
VALVE
SECONDARY REGULATOR
VALVE
LOCK-UP CONTROL
VALVE
C1 ACCUMULATOR
LOW COAST
MODULATOR
VALVE (B3)
LEGEND
B1 ACCUMULATOR
VALVE
ACCUMULATOR
CONTROL
VALVE
B2 ACCUMULATOR
VALVE
B2
ACCUMULATOR
C2 ACCU-
MULATOR
C2 ACCU-
MULATOR
VALVE
C3 ACCUMULATOR
VALVE
OUTPUT
SUCTION
TCC
RELEASE SIDE
TCC
APPLY SIDE
THE RETURN
LINE IS LOCATED
IN THE FRONT PAN
CLUTCH PACKS
C3
ACCUMULATOR
.038" ORIFICE
.058" CROSS-
DRILLED HOLE
.0
3
0
"
.0
3
0
"
2
2
6
W
1
.0
5
1
"
VOID
C-3
C-3
ATF
COOLER
X
X
B4 BRAKE BAND
"OFF"
B4 SERVO
B4 ACCUMULATOR
PISTON
B
-4
A
-2
.0
3
2
"
.0
8
6
"
.0
4
0
"
.0
3
5
"
.0
3
9
"
.0
4
2
"
**
.0
3
9
"
C
B
3
C
B
6
.0
7
8
"
Rear
lube
Central
lube
Pressure
port
503L
SUMP
X
X
PUMP
TORQUE
CONVERTER
B-1
C
B
1
C
B
2
C
B
8
C
B
9
C
B
1
0
.059"
X
.047"
X
X
COOLER
RELIEF
X
0
. 32"
X
X
X
X
503L
.0
4
0
"
X
X
X
X
.032”
Differential
lube
.0
5
9
”
.
2"
03
B
1
9
B
1
9
n.c.
S2
"OFF"
n.o.
X
X
X
X
X
X
.035" balance
orifice thru valve
P
R N D 3 L
50-42LE
2
4
9
W
2
.0
3
9
"
C
B
4
C
B
5
.0
5
0
"
.0
4
2
"
W
2
W
2
X
X
.039"
.070"
.0
3
9
"
.0
3
9
"
X
X
.0
3
0
"
C
B
7
DRIVE POSITION
3rd GEAR
B3 BRAKE
(LOW/REV. BRAKE)
C2 CLUTCH
(DIRECT CLUTCH)
LEGEND
LINE PRESSURE
EPC PRESSURE
SECONDARY REG.
PRESSURE
TO SUMP
SOLENOID PRESSURE
COOLER PRESSURE
CONNECTED CIRCUIT
W1- W2 SPACER
PLATE DIFFERENCES
** THIS HOLE IS USED ONLY
ON CHECK VALVE VERSIONS
ACCUMULATOR BACK PRESH.
C1 CLUTCH
(FORWARD CLUTCH)
B1 BRAKE
(OVERRUN BRAKE)
B2 BRAKE
(INT. BRAKE)
C3 CLUTCH
(UNDERDRIVE CLUTCH)
.058” ORIFICE
S1
"OFF"
VIEWED FROM THE
WORM TRACK SIDE
n.c.
STH (epc)
SL
"OFF"
X
X
X
X
X
X
X
X
X
X
X
.039" balance
orifice thru valve
PRESSURE CONTROL
SOLENOID REG. VALVE
MANUAL VALVE
2-3 SHIFT
VALVE
3-4 SHIFT
VALVE
1-2 SHIFT
VALVE
NEUTRAL CONTROL
VALVE (Blocked)
CLUTCH MODULATOR
VALVE
TCC SOLENOID
REGULATOR VALVE
PRESSURE REGULATOR
VALVE
SECONDARY REGULATOR
VALVE
LOCK-UP CONTROL
VALVE
C1 ACCUMULATOR
LOW COAST
MODULATOR
VALVE (B3)
LEGEND
B1 ACCUMULATOR
VALVE
ACCUMULATOR
CONTROL
VALVE
B2 ACCUMULATOR
VALVE
B2
ACCUMULATOR
C2 ACCU-
MULATOR
C2 ACCU-
MULATOR
VALVE
C3 ACCUMULATOR
VALVE
OUTPUT
SUCTION
TCC
RELEASE SIDE
TCC
APPLY SIDE
THE RETURN
LINE IS LOCATED
IN THE FRONT PAN
CLUTCH PACKS
C3
ACCUMULATOR
.038" ORIFICE
.058" CROSS-
DRILLED HOLE
.0
3
0
"
.0
3
0
"
2
2
6
W
1
.0
5
1
"
VOID
C-3
C-3
ATF
COOLER
X
X
B4 BRAKE BAND
"OFF"
B4 SERVO
B4 ACCUMULATOR
PISTON
B
-4
A
-2
.0
3
2
"
.0
8
6
"
.0
4
0
"
.0
3
5
"
.0
3
9
"
.0
4
2
"
**
.0
3
9
"
C
B
3
C
B
6
.0
7
8
"
Rear
lube
Central
lube
Pressure
port
503L
SUMP
X
X
PUMP
TORQUE
CONVERTER
B-1
C
B
1
C
B
2
C
B
8
C
B
9
C
B
1
0
X
.047"
X
X
COOLER
RELIEF
X
03
.
2"
X
X
X
X
503L
.0
4
0
"
X
X
X
X
.032”
Differential
lube
.0
5
9
”
.0 2"
3
B
1
9
B
1
9
n.c.
S2
"OFF"
n.o.
X
X
X
X
X
X
.035" balance
orifice thru valve
P
R N D 3 L
50-42LE
2
4
9
W
2
.0
3
9
"
C
B
4
C
B
5
.0
5
0
"
.0
4
2
"
W
2
W
2
X
X
.039"
.070"
.0
3
9
"
.0
3
9
"
X
X
.0
3
0
"
C
B
7
DRIVE POSITION
4th GEAR
B3 BRAKE
(LOW/REV. BRAKE)
LEGEND
LINE PRESSURE
EPC PRESSURE
SECONDARY REG.
PRESSURE
TO SUMP
SOLENOID PRESSURE
COOLER PRESSURE
CONNECTED CIRCUIT
W1- W2 SPACER
PLATE DIFFERENCES
** THIS HOLE IS USED ONLY
ON CHECK VALVE VERSIONS
ACCUMULATOR BACK PRESH.
C1 CLUTCH
(FORWARD CLUTCH)
B1 BRAKE
(OVERRUN BRAKE)
B2 BRAKE
(INT. BRAKE)
C3 CLUTCH
(UNDERDRIVE CLUTCH)
C2 CLUTCH
(DIRECT CLUTCH)
.059"
.058” ORIFICE
S1
"OFF"
VIEWED FROM THE
WORM TRACK SIDE
n.c.
STH (epc)
SL
"ON"
X
X
X
X
X
X
X
X
X
X
X
.039" balance
orifice thru valve
PRESSURE CONTROL
SOLENOID REG. VALVE
MANUAL VALVE
2-3 SHIFT
VALVE
3-4 SHIFT
VALVE
1-2 SHIFT
VALVE
NEUTRAL CONTROL
VALVE (Blocked)
CLUTCH MODULATOR
VALVE
TCC SOLENOID
REGULATOR VALVE
PRESSURE REGULATOR
VALVE
SECONDARY REGULATOR
VALVE
LOCK-UP CONTROL
VALVE
C1 ACCUMULATOR
LOW COAST
MODULATOR
VALVE (B3)
LEGEND
B1 ACCUMULATOR
VALVE
ACCUMULATOR
CONTROL
VALVE
B2 ACCUMULATOR
VALVE
B2
ACCUMULATOR
C2 ACCU-
MULATOR
C2 ACCU-
MULATOR
VALVE
C3 ACCUMULATOR
VALVE
OUTPUT
SUCTION
TCC
RELEASE SIDE
TCC
APPLY SIDE
THE RETURN
LINE IS LOCATED
IN THE FRONT PAN
CLUTCH PACKS
C3
ACCUMULATOR
.038" ORIFICE
.058" CROSS-
DRILLED HOLE
.0
3
0
"
.0
3
0
"
2
2
6
W
1
.0
5
1
"
VOID
C-3
C-3
ATF
COOLER
X
X
B4 BRAKE BAND
"OFF"
B4 SERVO
B4 ACCUMULATOR
PISTON
B
-4
A
-2
.0
3
2
"
.0
8
6
"
.0
4
0
"
.0
3
5
"
.0
3
9
"
.0
4
2
"
**
.0
3
9
"
C
B
3
C
B
6
.0
7
8
"
Rear
lube
Central
lube
Pressure
port
503L
SUMP
X
X
PUMP
TORQUE
CONVERTER
B-1
C
B
1
C
B
2
C
B
8
C
B
9
C
B
1
0
.059"
X
.047"
X
X
X
X
COOLER
RELIEF
X
0
. 32"
X
X
X
X
503L
.0
4
0
"
X
X
X
X
.032”
Differential
lube
.0
5
9
”
.
2"
03
B
1
9
B
1
9
n.c.
S2
"OFF"
n.o.
X
X
X
X
X
.035" balance
orifice thru valve
P
R N D 3 L
50-42LE
2
4
9
W
2
.0
3
9
"
C
B
4
C
B
5
.0
5
0
"
.0
4
2
"
W
2
W
2
X
X
.039"
.070"
.0
3
9
"
.0
3
9
"
X
X
.0
3
0
"
C
B
7
DRIVE POSITION
4th GEAR TCC "ON"
B3 BRAKE
(LOW/REV. BRAKE)
LEGEND
LINE PRESSURE
EPC PRESSURE
SECONDARY REG.
PRESSURE
TO SUMP
SOLENOID PRESSURE
COOLER PRESSURE
CONNECTED CIRCUIT
W1- W2 SPACER
PLATE DIFFERENCES
** THIS HOLE IS USED ONLY
ON CHECK VALVE VERSIONS
ACCUMULATOR BACK PRESH.
C1 CLUTCH
(FORWARD CLUTCH)
B1 BRAKE
(OVERRUN BRAKE)
B2 BRAKE
(INT. BRAKE)
C3 CLUTCH
(UNDERDRIVE CLUTCH)
C2 CLUTCH
(DIRECT CLUTCH)
.058” ORIFICE
S1
"ON"
VIEWED FROM THE
WORM TRACK SIDE
n.c.
STH (epc)
SL
"OFF"
X
X
X
X
X
X
X
X
X
X
X
.039" balance
orifice thru valve
PRESSURE CONTROL
SOLENOID REG. VALVE
MANUAL VALVE
2-3 SHIFT
VALVE
3-4 SHIFT
VALVE
1-2 SHIFT
VALVE
NEUTRAL CONTROL
VALVE (Blocked)
CLUTCH MODULATOR
VALVE
TCC SOLENOID
REGULATOR VALVE
PRESSURE REGULATOR
VALVE
SECONDARY REGULATOR
VALVE
LOCK-UP CONTROL
VALVE
C1 ACCUMULATOR
LOW COAST
MODULATOR
VALVE (B3)
LEGEND
B1 ACCUMULATOR
VALVE
ACCUMULATOR
CONTROL
VALVE
B2 ACCUMULATOR
VALVE
B2
ACCUMULATOR
C2 ACCU-
MULATOR
C2 ACCU-
MULATOR
VALVE
C3 ACCUMULATOR
VALVE
OUTPUT
SUCTION
TCC
RELEASE SIDE
TCC
APPLY SIDE
THE RETURN
LINE IS LOCATED
IN THE FRONT PAN
CLUTCH PACKS
C3
ACCUMULATOR
.038" ORIFICE
.058" ORIFICE
.058" CROSS-
DRILLED HOLE
.0
3
0
"
.0
3
0
"
2
2
6
W
1
.0
5
1
"
VOID
C-3
C-3
ATF
COOLER
X
X
B4 BRAKE BAND
"OFF"
B4 SERVO
B4 ACCUMULATOR
PISTON
B
-4
A
-2
.0
3
2
"
.0
8
6
"
.0
4
0
"
.0
3
5
"
.0
3
9
"
.0
4
2
"
**
.0
3
9
"
C
B
3
C
B
6
.0
7
8
"
Rear
lube
Central
lube
Pressure
port
503L
SUMP
X
X
PUMP
TORQUE
CONVERTER
B-1
C
B
1
C
B
2
C
B
8
C
B
9
C
B
1
0
.059"
X
.047"
X
X
COOLER
RELIEF
X
.032"
X
X
X
X
503L
.0
4
0
"
X
X
X
X
.032”
Differential
lube
.0
5
9
”
.
2
0
"
3
B
1
9
B
1
9
n.c.
S2
"OFF"
n.o.
X
X
X
X
X
X
.035" balance
orifice thru valve
P
R N D 3 L
50-42LE
2
4
9
W
2
.0
3
9
"
C
B
4
C
B
5
.0
5
0
"
.0
4
2
"
W
2
W
2
X
X
.039"
.070"
.0
3
9
"
.0
3
9
"
X
X
.0
3
0
"
C
B
7
MANUAL "3" POSITION
3rd GEAR
B3 BRAKE
(LOW/REV. BRAKE)
C2 CLUTCH
(DIRECT CLUTCH)
LEGEND
LINE PRESSURE
EPC PRESSURE
SECONDARY REG.
PRESSURE
TO SUMP
SOLENOID PRESSURE
COOLER PRESSURE
CONNECTED CIRCUIT
W1- W2 SPACER
PLATE DIFFERENCES
** THIS HOLE IS USED ONLY
ON CHECK VALVE VERSIONS
ACCUMULATOR BACK PRESH.
C1 CLUTCH
(FORWARD CLUTCH)
B1 BRAKE
(OVERRUN BRAKE)
B2 BRAKE
(INT. BRAKE)
C3 CLUTCH
(UNDERDRIVE CLUTCH)
LOW COAST MOD. PRESH.
