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Technical Service Information
AUTOMATIC TRANSMISSION SERVICE GROUP
Copyright © 2003 ATSG
03-34Page 1 of 11
VOLVO/SAAB AW50-42LEVALVE BODY EXPLODED VIEWS
AND IDENTIFICATION OF COMPONENTS
Refer to Figure 1 for Solenoid identification and locations on the valve body.
Refer to Figure 2 for valve identification and locations in the "Upper" valve body.
Refer to Figure 3 for valve identification and locations in the "Center" valve body, "Front" side.
Refer to Figure 4 for valve identification and locations in the "Center" valve body, "Rear" side.
Refer to Figure 5 for valve identification and locations in the "Lower" valve body, "Front" side.
Refer to Figure 6 for valve identification and locations in the "Lower" valve body, "Rear" side.
Refer to Figure 7 for illustrations of the typical spacer plates.
Refer to Figure 8 for the check valve and check ball locations in the "Lower" valve body.
Refer to Figure 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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99
992222
2211
9911
1155 22
B19
B19
Shift SolenoidNumber 1
Shift SolenoidNumber 2
Pressure ControlSolenoid
TCC Solenoid
Figure 1
SOLENOID IDENTIFICATIONAND LOCATIONS
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1. UPPER VALVE BODY CASTING2. PRESSURE CONTROL SOLENOID REGULATOR VALVE3. PRESSURE CONTROL SOLENOID REGULATOR VALVE SPRING4. PRESSURE CONTROL SOLENOID REGULATOR VALVE BORE PLUG5. 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 PLUG14. 1-2 SHIFT VALVE RETAINER15. NEUTRAL CONTROL VALVE16. NEUTRAL CONTROL VALVE RETAINER17. PRIMARY REGULATOR VALVE18. PRIMARY REGULATOR VALVE SPRING19. PLUNGER20. PLUNGER SLEEVE21. PLUNGER SLEEVE RETAINER
1. CENTER VALVE BODY CASTING2. MANUAL VALVE3. 2-3 SHIFT VALVE4. 2-3 SHIFT VALVE SPRING5. 2-3 SHIFT VALVE BORE PLUG6. 2-3 SHIFT VALVE RETAINER7. 3-4 SHIFT VALVE8. 3-4 SHIFT VALVE SPRING9. 3-4 SHIFT VALVE BORE PLUG
10. 3-4 SHIFT VALVE RETAINER11. 1-2 SHIFT VALVE
CENTER VALVE BODY "FRONT" SIDEVALVE IDENTIFICATION AND LOCATIONS
5555
00
1199
1
2
3
45
6
9
13
17
1819
20
16
14
10
21
15
12
11
7
8
RetainerLocations
Figure 3
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1. CENTER VALVE BODY CASTING2. CLUTCH MODULATOR VALVE3. CLUTCH MODULATOR VALVE SPRING4. CLUTCH MODULATOR VALVE BORE PLUG5. CLUTCH MODULATOR VALVE RETAINER
6. TCC SOLENOID REGULATOR VALVE7. TCC SOLENOID REGULATOR VALVE SPRING8. TCC SOLENOID REGULATOR VALVE BORE PLUG9. TCC SOLENOID REGULATOR VALVE RETAINER
Figure 4
CENTER VALVE BODY "REAR" SIDEVALVE IDENTIFICATION AND LOCATIONS
555500 1199
6
7 8
9
5
43
2
1
RetainerLocations
RetainerLocations
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1. LOWER VALVE BODY2. C3 ACCUMULATOR PISTON3. C3 ACCUMULATOR PISTON SPRING4. C3 ACCUMULATOR VALVE5. C3 ACCUMULATOR VALVE SPRING6. B1 ACCUMULATOR VALVE7. B1 ACCUMULATOR VALVE SPRING8. LOW COAST MODULATOR VALVE (B3)
9. LOW COAST MODULATOR VALVE SPRING (B3)
10. LOCK-UP CONTROL VALVE11. LOCK-UP CONTROL VALVE SPRING12. PLUNGER13. PLUNGER SLEEVE14. LOCK-UP CONTROL VALVE RETAINER 15. COVER PLATE GASKET16. COVER PLATE 17. COVER PLATE BOLTS (7)
Figure 5
LOWER VALVE BODY "FRONT" SIDEVALVE IDENTIFICATION AND LOCATIONS
RetainerLocations
1
3
2
15
1617
4
5
7
6
89
10
11
12
14
13
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1. LOWER VALVE BODY2. C2 ACCUMULATOR PISTON3. C2 ACCUMULATOR SPRING (INNER)4. C2 ACCUMULATOR SPRING (OUTER)5. C2 ACCUMULATOR VALVE6. C2 ACCUMULATOR VALVE SPRING7. B2 ACCUMULATOR PISTON8. B2 ACCUMULATOR SPRING (INBOARD)9. B2 ACCUMULATOR SPRING (OUTBOARD)
10. B2 ACCUMULATOR VALVE
11. B2 ACCUMULATOR SPRING12. ACCUMULATOR CONTROL VALVE13. ACCUMULATOR CONTROL VALVE SPRING14. SECONDARY REGULATOR VALVE15. SECONDARY REGULATOR VALVE SPRING16. SECONDARY REGULATOR VALVE BORE PLUG17. SECONDARY REGULATOR VALVE RETAINER18. COVER PLATE GASKET19. 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
1112
13
17
1614
15
RetainerLocations
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W 1
W 1
"TYPICAL" SPACER PLATES
CENTER VALVE BODYTO UPPER VALVE BODY
SPACER PLATE
LOWER VALVE BODYTO 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 FILTERSCREEN
Figure 9
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VOLVO/SAAB AW50-42LE"CENTER" VALVE BODY, "LOWER" VALVE BODY SIDE
If the spacer plate has only onesmall hole over either locationDO NOT install a checkball.
If the spacer plate has one largeand one small hole over location
INSTALL a checkball.
CHECK VALVEASSEMBLY
(Early Models Only)
This checkball can go ineither 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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