MAZDA 626 1987 Workshop Manual

INSPECTION AND REPAIR 7B
CONTROL VALVE BODY (G4A-HL)
Precaution
(1) Pay close attention when handling the control valve because it consists df the most precise and
delicate parts of the transaxle.
(2) Neatly arrange the removed parts in order to avoid mixing up similar parts.
(3) Disassemble the control valve assembly and thoroughly clean it when the clutch and/or brake bands
are burned, and/or when the automatic transaxle fluid is degenerated.
Components I
Front and premain control body
6—8 Nm ® (66—80 cm-kg, 57—69 In-lb)
1. Lock-up solenoid valve
2. Front control body
3. Front/premain front gasket
4. Premain separator
5. Front/premain rear gasket
6. Premain control body
7. Premain/main front gasket
8. Main separator
76G07B-163
7B—155

7B INSPECTION AND REPAIR
Components II
Main and rear control body
1. Premain/main rear gasket
2. Main control body
3. Main/rear front gasket
4. Rear separator
5. Main/rear rear gasket
6. Rear control body
83U07B-274
Disassembly of Control Valve Body
1. Remove the lock-up solenoid valve.
2. Remove the O-ring and oil strainer.
83U07B-275
7B-156

INSPECTION AND REPAIR 7B
83U07B-276
83U07B-277
Rubber ball
——„ ^ -Orifice ^M&^tt1.7mm, ^n 0.067 in)
83U07B-278
3. Remove the indicated bolts and bracket, and pull
out the front control body with the premain sepa-
rator as a unit.
4. Remove the front/premain gaskets and separator
from the front control body.
5. Remove the rubber balls, orifice check valve (01.7
mm, 0.067 in) and spring from the premain con-
trol body.
6. Remove the bolts and hexagonal head bolt and
remove the premain control body and the main
separator as a unit.
83U07B-279
7B-157

7B INSPECTION AND REPAIR
?08Cmm 0rifice 0 mm (0039 in)
(0.031 in) '

£
i x
Orifice 01.0 mm (0.039 in) 83U07B-280
Rubber ball
7. Remove the premain/main gaskets and separator
from the premain control body.
8. Remove the orifice check valves (<£1.0 mm, 0.039
in; <£0.8 mm, 0.031 in) and springs, and the throt-
tle relief ball and spring from the premain control
body.
9. Remove the rubber balls from the main control
body.
83U07B-281
83U07B-282
Converter relief ball Orifice


Orifice
4>2.0 mm
079 in)
Orifice
<£1.0 mm
(0.039 in)
10. Turn the assembly over and remove the bolts
shown in the figure.
Remove the rear separator as a unit.
11. Remove the main/rear gaskets and separator from
the rear control body.
12. Remove the orifice check valves (02.0 mm, 0.079
in; 01.6 mm, 0.063 in; 01.0 mm, 0.039 in) and
springs, converter relief ball and spring, and the
rubber ball from the rear control body.
83U07B-283
7B-158

INSPECTION AND REPAIR 7B
13. Remove the orifice check valves (01.5 mm, 0.059
in) and springs, oil strainer, and rubber ball from
the main control body.
76G07B-164
7B-159

7B INSPECTION AND REPAIR
Premain Control Body
Disassembly
Disassemble in the sequence shown in the figure.
®> 3C 28 3C n
6—fl N-m j'j. r{\\ (66—80 cm-kg, -- JJ/ 57—69 In-lb)

6
(66 57—69 In-lb)
i—8 N-m & /${)W 66—80 cm-kg, / /

""
® 38 m P (20) MljP&arSiSP©

At
Valve Location
N-R accumulator piston.
N-D accumulator piston.
Coasting bypass valve-
3-2 timing valve-
3-2 capacity valve-
1-2 accumulator piston
-OD release valve
Bypass valve
Servo control valve
2-3 timing valve
Low reducing valve
1. Retainer
2. Low reducing spring
3. Low reducing valve
4. Retainer
5. 2-3 timing spring
6. 2-3 timing valve
7. Stopper pin
8. Stopper plug
9. Servo control valve
10. Servo control spring
11. Stopper pin
12. Stopper plug
13. Bypass valve
14. Bypass spring
15. Stopper pin
16. Stopper plug
17. OD release valve
18. OD release spring
19. Bolt
20.1-2 accumulator plate
21.1-2 accumulator gasket
22.1-2 accumulator springs
23.1-2 accumulator piston
24.1-2 accumulator seal rings
25. Bolt
26. N-R accumulator plate
27. N-R accumulator gasket
28. N-R accumulator piston
29. N-R accumulator rear
spring
83U07B-285
30. N-R accumulator seal rings
31. N-D accumulator front
spring
32. N-D accumulator piston
33. N-D accumulator seal rings
34. Coasting bypass spring
35. Coasting bypass valve
36. Coasting bypass plug
37. Retainer
38. 3-2 timing spring
39. 3-2 timing valve
40. Stopper pin
41. Stopper plug
42. 3-2 capacity spring
43. 3-2 capacity valve
7B-160

INSPECTION AND REPAIR 7B
Inspection
Check the following and replace any faulty parts.
1. Damaged or worn valves
2. Damaged oil passage
3. Cracked or damaged valve body
4. Operation of each valve
5. Weakened spring
Spring

Spring name Outer dia.
mm
(in) Free length
mm (in)
Wire dia.
mm
(in) Spring color
1-2 accumulator small spring F8 engine 9.9 (0.400) 84.7 (3.335) 1.2 (0.047) Red
1-2 accumulator large spring
FE engine 13.0 (0.512) 73.2 (2.881) 1.8 (0.071) Pink 1-2 accumulator large spring F8 engine 16.0 (0.630) 84.7 (3.335) 2.0 (0.079) White
Bypass spring 5.0 (0.197) 25.1 (0.988) 0.7 (0.028) Yellow
Servo control spring 4.9 (0.193) 27.1 (1.067) 0.5 (0.020) Light blue
2-3 timing spring 8.3 (0.327) 26.5 (1.043) 0.8 (0.031)
—

N-R accumulator rear spring 11.1 (0.437) 68.2 (2.685) 1.0 (0.039) Blue
N-D accumulator front spring 9.8 (0.386) 60.9 (2.398) 1.1 (0.043) Yellow
Low reducing spring 8.7 (0.343) 38.3 (1.508) 0.9 (0.035) Black
OD release spring 6.0 (0.236) 32.6 (1.283) 0.6 (0.024) Orange
Coasting bypass spring 5.8 (0.228) 31.3 (1.232) 0.6 (0.024) Yellow
3-2 timing spring 8.2 (0.323) 28.55 (1.124) 0.8 (0.031) Maroon
3-2 capacity spring 5.55 (0.219) 30.5 (1.201) 0.55 (0.022) Light green
Throttle relief ball spring 6.6 (0.260) 20.3 (0.799) 0.8 (0.031) Light green

76G07B-165
Assembly
1. Install the 3-2 capacity valve, 3-2 capacity spring,
stopper plug, and stopper pin.
2. Install the 3-2 timing valve, 3-2 timing spring, and
retainer.
83U07B-287
3. Install the coasting bypass plug, coasting bypass
valve, and coasting bypass spring.
4. Apply ATF to the O-rings, and install them onto the
piston; then insert the N-R accumulator rear spring,
and N-R accumulator piston.
5. Apply ATF to the O-rings, and install them onto the
piston; then insert the N-D accumulator piston, and
N-D accumulator front spring.
83U07B-288
7B—161

7B INSPECTION AND PREAIR
83U07B-289
83U07B-290
83U07B-291
6. Install the N-R accumulator gasket and plate; then
tighten the plate.
Tightening torque:
6—8
N
m (66—80 cm-kg, 57—69 in-lb)
7. Apply ATF to the O-rings, and install them onto the
piston; then install the 1-2 accumulator piston and
1-2 accumulator springs.
8. Install the 1-2 accumulator gasket and plate; then
tighten the plate.
Tightening torque:
6—8 N-m (66—80 cm-kg, 57—69 in-lb)
9. Install the OD release spring, OD release valve,
stopper plug, and stopper pin.
10. Install the bypass spring, bypass valve, stopper
plug, and stopper pin.
11. Install the servo control spring, servo control valve,
stopper plug, and stopper pin.
83U07B-292
7B-162

INSPECTION AND REPAIR 7B
12. Install the 2-3 timing valve, 2-3 timing spring, and
retainer,
13. Install the low reducing valve, low reducing spring,
and retainer.
83U07B-293
7B—163

7B INSPECTION AND REPAIR
Main Control Body
Disassembly
Disassemble in the sequence shown in the figure.
83U07B-294
1. Stopper pin 19. 2 range control plug 37. Retainer
2. Stopper plug 20. 2 range control valve 38. Throttle backup spring
3. 3-4 shift front plug 21. 2 range control spring 39. Throttle backup valve
4. 3-4 shift sleeve 22. 2 range control rear sleeve 40. Stopper pin
5. 3-4 shift valve 23. Retainer 41. Throttle modulator sleeve A
6. 3-4 shift spring 24.1 range control spring 42. Throttle modulator front
7. 3-4 shift rear plug 25.1 range control valve spring
8. Stopper pin 26. Stopper pin 43. Throttle modulator sleeve B
9. Stopper plug 27. 2-3 shift sleeve 44. Throttle modulator valve
10. 1-2 shift plug 28. 2-3 shift front plug 45. Throttle modulator sleeve C
11.
1
-2 shift valve 29. 2-3 shift valve 46. Throttle modulator rear
12. 1-2 shift spring 30. 2-3 shift spring spring
13. Stopper pin 31. 2-3 shift rear plug 47. Throttle modulator plug
14. Stopper plug 32. Stopper pin 48. Throttle cam assembly
15. Kick-down valve 33. Stopper plug 49. Throttle plug assembly
16. Kick-down spring 34. 1-2 shift control valve 50. Throttle spring
17. Stopper pin 35.1-2 shift control spring 51. Throttle valve
18. 2 range control front sleeve 36.1 -2 shift control sleeve 52. Throttle assist spring
53. Throttle adjust plug
7B-164