1987 MAZDA 626 Workshop Manual

INSPECTION AND REPAIR 7B
2-4 BRAKE BAND
Inspection
Check the following and replace if necessary.
1. Damaged or worn 2-4 brake band
86U07B-261
BAND SERVO
Inspection
Check the following and replace any faulty parts.
1. Damaged or worn piston
2. Weakened return spring
Free length of spring:
G4A-EL: 43.25 mm (1.703 in)
G4A-HL: FE engine 42.0 mm (1.654 in)
F8 engine 43.25 mm (1.703 in)
76G07B-140
OTHER INSPECTION
Check the following and replace any faulty parts.
1. Damaged or worn output shell
2. Damaged or worn internal gear
3. Damaged or worn turbine shaft
4. Damaged or worn oil pump shaft
5. Damaged or worn anchor strut and shaft
86U07B-263
6. Damaged or cracked valve body cover
7. Damaged or cracked oil pan
8. Damaged or clogged oil strainer
86U07B-264
7B—135

7B INSPECTION AND REPAIR
CONTROL VALVE BODY (G4A-EL)
Precaution
(1) Pay close attention when handling the control valve because it consists of 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 N-m (66—80 cm-kg, 57—69 in-lb)
1.1-2 Solenoid valve
2. 2-3 Solenoid valve
3. Bolts
4. Front control body
5. Front/premain front gasket
6. Premain separator
7. Front/premain rear gasket
8. Premain control body
9. Premain/main front gasket
10. Main separator
76G07B-141
7B—136

INSPECTION AND REPAIR 7B
Components II
Main and rear control body
®
86U07B-266
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
7. 3-4 solenoid valve
8. Lock-up solenoid valve
9. Bolts
Disassembly of Control Valve Body
1. Remove the 3-4 solenoid valve and lock-up sole-
noid valve.
2. Remove the O-rings and oil strainers.
86U07B-267
7B—137

7B INSPECTION AND REPAIR
3. Remove the 1-2 solenoid valve and 2-3 solenoid
valve and wire harness.
4. Remove the O-rings and oil strainers.
86U07B-268
5. Remove the front indicated bolts and pull out the
front control body with premain separator as a unit.
86U07B-269
86U07B-270
7. Remove the orifice check valve (<£0.8 mm, 0.071
in) and spring from the premain control body.
76G07B-142
7B—138

INSPECTION AND REPAIR 7B
8. Remove the bolts and hexagonal head bolt and
remove the premain control body and the main
separator as a unit.
76G07B-144
9. Remove the premain/main gaskets and separator
from the premain control body.
10. Remove the orifice check valve (<£2.0 mm, 0.079
in) and spring, and the throttle relief ball and spring
from the premain control body.
76G07B-145
11. Remove the converter relief ball and spring, and
the orifice check valve (00.8 mm, 0.031 in) and
spring from the main control body.
76G07B-146
12. Turn the assembly over and remove the bolts
shown in the figure. Remove the rear separator as
a unit.
76G07B-147
7B—139

7B INSPECTION AND REPAIR
13. Remove the main/rear gaskets and separator from
the rear control body.
14. Remove the orifice check valves (01.5 mm, 0.059
in; 01.0 mm, 0.039 in; 02.0 mm, 0.079 in) and
spring from the rear control body.
76G07B-148
Remove the orifice check valve (02.0 mm, 0.079
in) and spring and the rubber ball from the main
control body.
76G07B-149
7B-140

INSPECTION AND REPAIR 7B
Premain Control Body
Disassembly
Disassemble in the sequence shown in the figure.

21
;i9 21 (?0) !S
(Non-
Turbo)
16 15 16 14 14 13 It
6—8 N-m (66—80 cm-kg, S7—69 ft-lb)
Valve Location
33 (34, 6—8 N-m (66—80 cm-kg, 57—69 ft-lb)
I '
N-R accumulator piston
N-D accumulator piston
Coasting bypass valve
_

1MB
P^raaD WOCE

3-2 timing valve timing
3-2 capacity valve"
-1-2 accumulator piston
-Bypass valve
-Servo control valve
timi 2-3 timing valve
76G07B-150
1. Retainer
2. 2-3 timing spring
3. 2-3 timing valve
4. Stopper pin
5. Stopper plug
6. Servo control valve
7. Servo control spring
8. Stopper pin
9. Stopper plug
10. Bypass valve
11. Bypass spring
12. Bolt
13.1-2 accumulator plate and
gasket
14.1-2 accumulator spring
15.1-2 accumulator piston
16.1-2 accumulator seal rings
17. Bolt
18. N-R accumulator plate and
gasket
19. N-R accumulator piston
20. N-R accumulator rear
spring
21. N-R accumulator seal rings
22. N-D accumulator front
spring
23. N-D accumulator piston
24. N-D accumulator seal rings
25. Coasting bypass spring
26. Coasting bypass valve
27. Coasting bypass plug
28. Retainer
29. 3-2 timing spring
30. 3-2 timing valve
31. Stopper pin
32. Stopper plug
33. 3-2 capacity spring
34. 3-2 capacity valve
7B—141

7B INSPECTION AND REPAIR
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 11.0 (0.433) 88.1 (3.348) 1.4 (0.055) Gray
1-2 accumulator large spring 16.0 (0.630) 78.0 (3.071) 2.0 (0.079) Blue
Bypass, Servo control spring 5.0 (0.197) 33.4 (1.315) 0.55 (0.022) Maroon
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) 62.0 (2.441) 1.2 (0.047) Light green
N-D accumulator front spring 9.8 (0.386) 52.9 (2.083) 1.0 (0.039) Brown
Coasting bypass spring 5.8 (0.228) 37.7 (1.484) 0.6 (0.024) Dark blue
3-2 timing spring 8.2 (0.323) 28.6 (1.126) 0.8 (0.031) Red
3-2 capacity spring 5.4 (0.213) 30.6 (1.205) 0.5 (0.020) White
Throttle relief ball spring 6.6 (0.260) 21.6 (0.850) 0.8 (0.031)
—
76G07B-151
Assembly
1. Install the 3-2 capacity valve, 3-2 capacity spring,
and stopper plug; then install the stopper pin.
2. Install the 3-2 timing valve, the 3-2 timing spring,
and retainer.
86U07B-280
3. Install the coasting bypass plug, coasting bypass
valve and coasting bypass spring.
4. Apply ATF to the O-rings, and install them to 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 to the
piston; then insert the N-D accumulator piston and
N-D accumulator front spring.
76G07B-152
7B—142