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AISIN SEIKI 450-43LE
VALVE BODY EXPLODED VIEWS
AND IDENTIFICATION OF COMPONENTS
Refer to Figures 1 and 2 for the Identification and location of valve line-ups in the Upper Valvebody
Refer to Figures 3 and 4 for the Identification and location of valve line-ups in the Lower Valvebody
Refer to Figure 5 for the Identification and location of the Shift Solenoids, Lock-up Solenoid and
the Timing Solenoid
Refer to Figure 6 for the Location of Checkballs and Filter in the Upper Valve Body
Refer to Figure 7 for the Location of Checkballs in the Lower Valve Body
Refer to Figure 8 for the Location of the retainers and Filters in the Lower Valve Body (Pan Side)
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UPPER VALVE BODY
21
20
28
19 24
27
23
26 31 34
30
22
37
25 33
29 36
32
35
2
1
3 6 9
4 7
5 8
10 12
11
13 15
14
16
17 Copyright © 2006 ATSG
18
Figure 1 06-43
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UPPER VALVE BODY LEGEND
1. UPPER VALVE BODY 20. SECONDARY REGULATOR VALVE
2. PRESSURE CONTROL SOLENOID 21. SECONDARY REGULATOR VALVE BORE PLUG
3. REDUCING VALVE 22. MODULATOR VALVE
4. REDUCING VALVE SPRING 23. MODULATOR VALVE SPRING
5. REDUCING VALVE BORE PLUG
24. MODULATOR VALVE BORE PLUG
6. LOCK-UP SIGNAL VALVE
7. LOCK-UP SIGNAL VALVE SPRING 25. REVERSE INHIBITOR VALVE # 1
8. LOCK-UP SIGNAL VALVE BORE PLUG 26. REVERSE INHIBITOR VALVE # 2
9. ACCUMULATOR VALVE 27. REVERSE INHIBITOR VALVE SPRING
10. ACCUMULATOR VALVE SPRING 28. REVERSE INHIBITOR VALVE SLEEVE
11. ACCUMULATOR VALVE BORE PLUG 29. LOW COAST MODULATOR VALVE SPRING
12. ORFICE CONTROL VALVE 30. LOW COAST MODULATOR VALVE*
13. ORFICE CONTROL VALVE SPRING 31. LOW COAST MODULATOR VALVE BORE PLUG
14. ORFICE CONTROL VALVE BORE PLUG 32. LOW INHIBITOR VALVE
15. 2-3 SHIFT VALVE PLUG 33. LOW INHIBITOR VALVE SPRING
16. 2-3 SHIFT VALVE 34. LOW INHIBITOR VALVE BORE PLUG
17. 2-3 SHIFT VALVE SPRING 35. DIRECT CLUTCH CHECK VALVE
18. 2-3 SHIFT VALVE BORE PLUG 36. DIRECT CLUTCH CHECK VALVE BALL
19. SECONDARY REGULATOR VALVE SPRING 37. DIRECT CLUTCH CHECK VALVE SLEEVE
*A stuck Low Coast Modulator Valve will cause no forward movement and a bind in reverse.
Copyright © 2006 ATSG
Figure 2
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LOWER VALVE BODY
38
39
43
47
40 44
51
48 54
41 52 63
45 55
42 49 56
57
53 64
46 58 65
50 69
66
59
60 67
61
68
62
Copyright © 2006 ATSG
Figure 3 06-43
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LOWER VALVE BODY LEGEND
38. LOWER VALVE BODY 54. LOCK-UP CONTROL VALVE PLUG
39. 2-3 TIMING VALVE SPRING 55. LOCK-UP CONTROL VALVE SLEEVE*
40. 2-3 TIMING VALVE 56. LOCK-UP CONTROL VALVE SPRING
41. 2-3 TIMING VALVE PLUG 57. LOCK-UP CONTROL VALVE SPACERS
42. 2-3 TIMING VALVE SLEEVE 58. LOCK-UP CONTROL VALVE
43. 1-2 SHIFT VALVE PLUG 59. CUT BACK VALVE SLEEVE
44. 1-2 SHIFT VALVE 60. CUTBACK VALVE SPRING
45. 1-2 SHIFT VALVE SPRING 61. CUTBACK VALVE
46. 1-2 SHIFT VALVE BORE PLUG 62. CUTBACK VALVE BORE PLUG
47. 3-4 SHIFT VALVE PLUG 63. PRIMARY REGULATOR VALVE
48. 3-4 SHIFT VALVE 64. PRIMARY REGULATOR VALVE SPACERS
49. 3-4 SHIFT VALVE SPRING 65. PRIMARY REGULATOR VALVE SPRING SEAT
50. 3-4 SHIFT VALVE BORE PLUG 66. PRIMARY REGULATOR VALVE SPRING
51. CO EXHAUST VALVE SPRING 67. PRIMARY REGULATOR BOOST VALVE
52. CO EXHAUST VALVE 68. PRIMARY REGULATOR BOOST SLEEVE
53. CO EXHAUST VALVE BORE PLUG 69. MANUAL VALVE
*A broken Lock-Up Control Valve Sleeve will jam the Lock-Up causing the engine to stall in gear.
Copyright © 2006 ATSG
Figure 4
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SOLENOID IDENTIFICATION
LOCK-UP
SOLENOID SS2 SS1 TIMING
SOLENOID SOLENOID SOLENOID
Copyright © 2006 ATSG
Figure 5 06-43
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UPPER VALVE BODY
CHECKBALL LOCATIONS
FILTER
RETAINER
Close-up
THE UPPER VALVE BODY HAS NINE 6.35MM (.250”) STEEL CHECKBALLS
NOTE: RETAINER LOCATIONS ARE HIGHLIGHTED IN GREY
Copyright © 2006 ATSG
Figure 6 06-43
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LOWER VALVEBODY
CHECKVALVE LOCATIONS
COOLER
PRESSURE
RELIEF
VALVE
COOLER
CHECK VALVES
MAKE CERTAIN
THIS RAISED LEG RETAINER
FITS INTO THE Close-up
NOTCH IN THE
VALVE BODY
THE LOWER VALVE BODY HAS TWO 10.00MM (.394”) STEEL CHECKBALLS
ON BARREL SPRINGS AND CAPSULES Copyright © 2006 ATSG
NOTE: RETAINER LOCATIONS ARE HIGHLIGHTED IN GREY
Figure 7 06-43
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LOWER VALVEBODY (Pan Side) RETAINER
AND FILTER LOCATIONS
Copyright © 2006 ATSG
Figure 8 06-43
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