Volvo 50-42LE transmission. Instruction - page 9

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)

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

B1 BRAKE

B2 BRAKE

B3 BRAKE

C2 CLUTCH

C1 CLUTCH

C3 CLUTCH

(UNDERDRIVE CLUTCH)

(FORWARD CLUTCH)

(DIRECT CLUTCH)

(LOW/REV. BRAKE)

(INT. BRAKE)

(OVERRUN BRAKE)

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

B-1

C-3

ATF

COOLER

X

X

B4 BRAKE BAND

"ON"

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

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

"ON"

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

PARK/NEUTRAL

POSITION

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.

.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

B1 BRAKE

B2 BRAKE

C1 CLUTCH

C3 CLUTCH

(UNDERDRIVE CLUTCH)

(FORWARD CLUTCH)

(INT. BRAKE)

(OVERRUN BRAKE)

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

B-1

C-3

ATF

COOLER

X

X

B4 BRAKE BAND

"ON"

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

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

03 "

B

9

1

B

9

1

n.c.

S2

"ON"

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

REVERSE

B3 BRAKE

(LOW/REV. BRAKE)

C2 CLUTCH

(DIRECT CLUTCH)

LEGEND

LINE PRESSURE

EPC PRESSURE

SECONDARY REG.
PRESSURE

TO SUMP

SOLENOID 1AND 2 PRESSURE

COOLER PRESSURE

CONNECTED CIRCUIT

W1- W2 SPACER
PLATE DIFFERENCES

** THIS HOLE IS USED ONLY

ON CHECK VALVE VERSIONS

ACCUMULATOR BACK PRESH.

.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

B1 BRAKE

B2 BRAKE

C3 CLUTCH

(UNDERDRIVE CLUTCH)

(INT. BRAKE)

(OVERRUN BRAKE)

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

B-1

C-3

ATF

COOLER

X

X

B4 BRAKE BAND

"ON"

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

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

"ON"

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

1st 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)

.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 CLUTCH

(UNDERDRIVE CLUTCH)

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

"ON"

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"

03

B

1

9
B

1

9

n.c.

S2

"ON"

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

2nd 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)

.058” ORIFICE

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