MAZDA 626 1987 Workshop Manual

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
Pressure modifier spring 8.3 (0.327) 26.5 (1.043) 0.8 (0.031)
—

Low reducing spring 8.7 (0.343) 38.3 (1.508) 0.9 (0.035) Black
1-2 shift spring 8.7 (0.343) 41.3 (1.626) 1.0 (0.039) Yellow
2-3, 3-4 shift spring 7.4 (0.291) 36.6 (1.441) 0.8 (0.031) Gray
Throttle backup spring 9.65 (0.380) 26.9 (1.059) 0.55 (0.022) Red
Throttle modulator spring 6.3 (0.248) 47.9 (1.886) 0.8 (0.031)
—

Throttle assist spring 5.15 (0.203) 32.3 (1.272) 0.55 (0.022) Dark green
Throttle spring 5.4 (0.213) 47.2 (1.858) 0.8 (0.031) Pink
Converter relief ball spring 6.9 (0.272) 24.1 (0.949) 0.9 (0.035) Maroon
Orifice check valve spring 5.0 (0.197) 12.5 (0.492) 0.23 (0.009)
—
76G07B-219
]
Assembly
1. Install the throttle adjust plug, throttle assist spring,
throttle valve, and throttle plug assembly.
86U07B-288
Caution
Install the throttle plug assembly with the
groove aligned with the bolt hole.
86U07B-289
7B-145

7B INSPECTION AND REPAIR
2. Install the throttle return spring as shown.
3. Install the throttle cam assembly to the main con-
trol body.
Tightening torque:
8—11 N-m (80—110 cm-kg, 69—95 in-lb)
86U07B-290
4. Install the throttle modulator spring, throttle modu-
lator valve, stopper plug, and stopper pin.
5. Install the throttle backup spring, throttle back
valve, and retainer.
6. Install the 3-4 shift spring, 3-4 shift valve, stopper
plug, and stopper pin.
386U07B-291
7. Install the 2-3 shift spring, 2-3 shift valve, stopper
plug, and stopper pin.
8. Install the 1-2 shift spring, 1-2 shift valve, stopper
plug, and stopper pin.
86U07B-292
9. Install the low reducing valve, low reducing spring,
and retainer.
10. Install the pressure modifier valve, pressure modi-
fier spring, stopper plug, and stopper pin.
86U07B-293
7B—146

INSPECTION AND REPAIR 7B
Rear Control Body
Disassembly
Disassemble in the sequence shown in the figure.
Valve Location
r\ /~v
Lock-up control valve
Pressure regulator valve
Manual valve
86U07B-294
1. Manual valve
2. Stopper pin
3. Stopper plug
4. Pressure regulator backup plug
5. Pressure regulator plug sleeve
6. Pressure regulator plug
7. Pressure regulator spring seat
8. Pressure regulator spring
9. Pressure regulator valve
10. Stopper pin
11. Stopper plug
12. Lock-up control valve
13. Lock-up control spring
7B-147

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
Pressure regulator spring 11.5 (0.453) 26.5 (1.043) 1.0 (0.039) Maroon
Lock-up control spring 5.0 (0.197) 35.2 (1.386) 0.6 (0.024) Purple

86U07B-295
Assembly
1. Install the lock-up control spring, lock-up control
valve, stopper plug, and stopper pin.
86U07B-296
Install the pressure regulator valve, pressure regu-
lator spring, pressure regulator spring seat, pres-
sure regulator plug, pressure regulator plug sleeve,
pressure regulator backup plug, stopper plug, and
stopper pin.
Note
Install the stopper plug larger end first.
86U07B-297
3. Install the manual valve.
86U07B-298
7B-148

INSPECTION AND REPAIR 7B
Assembly of Control Valve Body
Note
a) Do not mix-up the front and rear gaskets
during assembly.
b) Match the bolt head letter and the control
valve body letter.
86U07B-299
1. Install the orifice check valves (01.5 mm, 0.059 in;
01.0 mm, 0.039 in; 02.0 mm, 0.079 in) and springs
in the rear control body as shown.
86U07B-300
2. Install the gaskets on both sides of the rear sepa-
rator; then install it onto the rear control body.
86U07B-301
Main/rear Main/rear
front gasket rear gasket
Note
The main/rear rear gasket and main/rear front
gasket are not interchangeable.
86U07B-302
7B—149

7B INSPECTION AND REPAIR
3. Install the orifice check valve (<£2.0 mm, 0.079 in)
and spring, and the rubber ball in the main con-
trol body as shown.
76G07B-153
4. Install the rear control body to the main control
body.
86U07B-304
5. Loosely tighten the bolts.
Note
Match the bolt head letter as shown.
86U07B-305
Converter relief ball
6. Turn the assembly over and install the orifice check
valve
(0.8
mm, 0.031 in) and spring, and the con-
verter relief ball and spring in the main control body
as shown.
86U07B-306
7B—150

INSPECTION AND REPAIR 7B
76G07B-154
7. Install the orifice check valve (<£2.0 mm, 0.079 in)
and spring, and the throttle relief ball and spring
in the premain control body as shown.
8. Install the gaskets on both sides of the main sepa-
rator; then install it onto the premain control body.
86U07B-308

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Premain/main
front gasket
Premain/main
rear gasket
86U07B-309
Note
The premain/main rear gasket and pre-
main/main front gasket are not inter-
changeable.
9. Set the premain control body onto the main con-
trol body.
86U07B-310
7B-151

7B INSPECTION AND REPAIR
10. Loosely tighten the bolts.
Note
Match the bolt head letter as shown.
86U07B-311
11. Install the orifice check valve (<£0.8 mm, 0.071 in)
and spring in the premain control body as shown.
86U07B-312
12. Install the gaskets on both sides of the premain
separator; then install it onto the front control body.
76G07B-156
^Front/premain'
front gasket
•

.
. _o) Front/premain
rear gasket
Note
The front/premain front gasket and
front/premain rear gasket are not inter-
changeable.
86U07B-314
7B-152

INSPECTION AND REPAIR 7B
76G07B-157
76G07B-158
76G07B-159
13. Install the front control body on the premain con-
trol body.
14. Loosely tighten the bolts.
Note
Match the bolt head letter as shown.
15. Install the control valve body mounting bolts as
shown for alignment.
16. Tighten the mounting bolts.
(1) Tighten the front control body.
Tightening torque:
6—8
N
m (66—80 cm-kg, 57—69 in-lb)
76G07B-160
7B—153

7B INSPECTION AND REPAIR
(2) Tighten the rear control body.
Tightening torque:
6—8 N-m (66—80 cm-kg, 57—69 in-lb)
86U07B-319
Install the 3-4 solenoid valve and lock-up solenoid
valve along with new O-rings and oil strainers.
Tightening torque:
6—8 N-m (66—80 cm-kg, 57—69 in-lb)
76G07B-161
18. Install the
1
-2 solenoid valve and 2-3 solenoid valve
along with new O-rings and oil strainers.
Tightening torque:
6—8 N-m (66—80 cm-kg, 57—69 in-lb)
76G07B-162
7B-154