AW50-42LE ATSG

8/20/2019 AW50-42LE ATSG

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Technical Service Information

AUTOMATIC TRANSMISSION SERVICE GROUP

Copyright © 2003 ATSG

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VOLVO/SAAB AW50-42LE

VALVE BODY EXPLODED VIEWSAND IDENTIFICATION OF COMPONENTS

Refer to F igure 1 for Solenoid identif ication and locations on the valve body.

Refer to F igure 2 for valve identif ication and locations in the " Upper" valve body.

Refer to Fi gure 3 for valve identif ication and locations in the " Center" valve body, " F ront" side.

Refer to F igure 4 for valve identif ication and locations in the " Center" valve body, " Rear" side.

Refer to Fi gure 5 for valve identif ication and locations in the " Lower" valve body, " Front" side.

Refer to F igure 6 for valve identif ication and locations in the " Lower" valve body, " Rear" side.

Refer to F igure 7 for il lustrations of the typical spacer plates.

Refer to F igure 8 for the check valve and check ball locations in the " Lower" valve body.

Refer to F igure 9 for the screen locations in the " Center" valve body, " Upper" valve body side.

Refer to Figure 10 for the check valve and check ball locations in the " Center" valve body, " Lower"

valve body side.

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9

9 2 2

2

1

B 1 9

Shi f t Solenoid

Number 1

Shi f t Solenoid

Number 2

Pressur e Contr ol

Solenoid

TCC Solenoid

Figure 1

SOLENOID IDENTIFICATIONAND LOCATIONS




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1. UPPER VALVE BODY CASTING

2. PRESSURE CONTROL SOLENOID REGULATOR VALVE

3. PRESSURE CONTROL SOLENOID REGULATOR VALVE SPRING

4. PRESSURE CONTROL SOLENOID REGULATOR VALVE BORE PLUG

5. PRESSURE CONTROL SOLENOID REGULATOR VALVE BORE PLUG RETAINER

2

1

3

4

5

Figure 2

UPPER VALVE BODYVALVE IDENTIFICATION AND LOCATIONS




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12. 1-2 SHIFT VALVE SPRING13. 1-2 SHIFT VALVE BORE PLUG

14. 1-2 SHIFT VALVE RETAINER

15. NEUTRAL CONTROL VALVE

16. NEUTRAL CONTROL VALVE RETAINER

17. PRIMARY REGULATOR VALVE

18. PRIMARY REGULATOR VALVE SPRING

19. PLUNGER

20. PLUNGER SLEEVE

21. PLUNGER SLEEVE RETAINER

1. CENTER VALVE BODY CASTING2. MANUAL VALVE

3. 2-3 SHIFT VALVE

4. 2-3 SHIFT VALVE SPRING

5. 2-3 SHIFT VALVE BORE PLUG


7. 3-4 SHIFT VALVE

8. 3-4 SHIFT VALVE SPRING

9. 3-4 SHIFT VALVE BORE PLUG


11. 1-2 SHIFT VALVE

CENTER VALVE BODY "FRONT" SIDEVALVE IDENTIFICATION AND LOCATIONS

5 5

0

1 9

1

2

3

4

5

6

9

13

17

1819

20

16

14

10

21

15

12

11

7

8

Retainer

Locations

Figure 3




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1. CENTER VALVE BODY CASTING

2. CLUTCH MODULATOR VALVE

3. CLUTCH MODULATOR VALVE SPRING

4. CLUTCH MODULATOR VALVE BORE PLUG

5. CLUTCH MODULATOR VALVE RETAINER

6. TCC SOLENOID REGULATOR VALVE

7. TCC SOLENOID REGULATOR VALVE SPRING

8. TCC SOLENOID REGULATOR VALVE BORE PLUG

9. TCC SOLENOID REGULATOR VALVE RETAINER

Figure 4

CENTER VALVE BODY "REAR" SIDEVALVE IDENTIFICATION AND LOCATIONS

5

50 1 9

6

78

9

5

43

2

1

Retainer

Locations

Retainer

Locations




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1. LOWER VALVE BODY

2. C3 ACCUMULATOR PISTON

3. C3 ACCUMULATOR PISTON SPRING

4. C3 ACCUMULATOR VALVE

5. C3 ACCUMULATOR VALVE SPRING

6. B1 ACCUMULATOR VALVE

7. B1 ACCUMULATOR VALVE SPRING

8. LOW COAST MODULATOR VALVE (B3)

9. LOW COAST MODULATOR VALVE SPRING (B3)

10. LOCK-UP CONTROL VALVE

11. LOCK-UP CONTROL VALVE SPRING

12. PLUNGER

13. PLUNGER SLEEVE

14. LOCK-UP CONTROL VALVE RETAINER

15. COVER PLATE GASKET

16. COVER PLATE

17. COVER PLATE BOLTS (7)

Figure 5

LOWER VALVE BODY "FRONT" SIDEVALVE IDENTIFICATION AND LOCATIONS

Retainer

Locations

1

3

2

15

1617

4

5

7

6

8

9

10

11

12

14

13




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1. LOWER VALVE BODY

2. C2 ACCUMULATOR PISTON

3. C2 ACCUMULATOR SPRING (INNER)

4. C2 ACCUMULATOR SPRING (OUTER)5. C2 ACCUMULATOR VALVE

6. C2 ACCUMULATOR VALVE SPRING

7. B2 ACCUMULATOR PISTON

8. B2 ACCUMULATOR SPRING (INBOARD)

9. B2 ACCUMULATOR SPRING (OUTBOARD)

10. B2 ACCUMULATOR VALVE

11. B2 ACCUMULATOR SPRING

12. ACCUMULATOR CONTROL VALVE

13. ACCUMULATOR CONTROL VALVE SPRING

14. SECONDARY REGULATOR VALVE15. SECONDARY REGULATOR VALVE SPRING

16. SECONDARY REGULATOR VALVE BORE PLUG

17. SECONDARY REGULATOR VALVE RETAINER

18. COVER PLATE GASKET

19. COVER PLATE20. COVER PLATE BOLTS (7)

Figure 6

LOWER VALVE BODY "REAR" SIDEVALVE IDENTIFICATION AND LOCATIONS

1

43

2 18

1920

6

5

97

8

10

11

12

13

17

1614

15

Retainer

Locations




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W

1

W

"TYPICAL" SPACER PLATES

CENTER VALVE BODY

TO UPPER VALVE BODY SPACER PLATE

LOWER VALVE BODY

TO CASE SPACER PLATE

Figure 7




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CHECK VALVEAND SPRING

PRESSURE RELIEFVALVE AND SPRING

"LOWER" VALVE BODY

REQUIRES FOUR RUBBER CHECKBALLS5.0mm (.197") IN DIAMETER

Figure 8




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4 SMALLFILTER

SCREENS

VOLVO/SAAB AW50-42LE"CENTER" VALVE BODY, "UPPER" VALVE BODY SIDE

LARGE FILTER SCREEN

Figure 9




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VOLVO/SAAB AW50-42LE"CENTER" VALVE BODY, "LOWER" VALVE BODY SIDE

I f the spacer pl ate has only one

small hol e over either l ocation

DO NOT install a checkball.

I f the spacer pl ate has one large

and one small hole over l ocation

INSTALL a checkball.

CHECK VALVE

ASSEMBLY(Early Models Only)

Thi s checkball can go in

either location indicated

by the arrows.

CHECK VALVEAND SPRING

BYPASS VALVEAND SPRING

REQUIRES SEVEN RUBBER CHECKBALLS5.0 mm (.197") DIAMETER

Figure 10




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AW50-42LE ATSG