1987 MAZDA 626 brake

DISASSEMBLY 7B
86U07B-156
86U07B-157
86U07B-158
(4) Remove the low and reverse brake piston by
applying compressed air through the fluid
passage.
4. Remove the manual shaft and manual plate.
(1) Remove the plug, washer, spring, and detent
ball.
(2) Remove the bracket.
(3) Loosen the nut and pull the manual shaft out.
(4) Remove the nut, washer, spacer, and manual
plate.
86U07B-159
7B—101

INSPECTION AND REPAIR 7B
INSPECTION AND REPAIR
PRECAUTION
(1) Several of the parts resemble each other; organize them so that they do not get mixed up.
(2) Clean each part with cleaning oil, clean out the oil holes and oil passages with compressed air,
and check that there are no obstructions.
(3) When using cleaning oil and compressed air, wear protective eyewear.
(4) If a clutch plate or brake band is replaced with a new one, soak it in ATF for 2 hours or more
before installing.
(5) Before assembly, apply ATF to all seal rings, rotating parts, and sliding parts.
(6) All seals, gaskets and roll pins must be replaced with new ones during assembly.
(7) Use petroleum jelly, not grease where required.
(8) When it is necessary to replace a bushing, replace the assembly which includes that bushing.
76G07B-217
TORQUE CONVERTER
The torque converter is welded together and cannot
be disassembled.
Inspection
1. Check the outer part of the converter for damage
or cracks, and replace it if necessary.
2. Check whether there is any rust on the pilot hub
of the converter or on the boss. If there is any, re-
move it completely.
3. Measure the bushing of the converter boss. Re-
place the converter assembly if the bushing is
worn.
Bushing inner diameter
Standard: 53.030 mm (2.088 in)
Maximum: 53.076 mm (2.090 in)
Washing Inside of Converter
1. Drain any ATF remaining in the converter.
2. Pour in solvent [approximately 0.5 liter (0.53 US
qt, 0.44 Imp qt) ].
3. Shake the converter to clean the inside. Pour out
the solvent.
4. Clean the inside of the converter with compressed
air so that the inside is perfectly empty.
5. Pour in ATF.
6. Shake the converter to clean the inside. Pour out
the ATF.
7B—107

7B INSPECTION AND REPAIR
Inspection
Check the following and replace any faulty parts.
1. Damaged or worn governor gear
2. Damaged or worn governor valve
3. Cracked or damaged governor carrier and sleeve
83U07B-267
Assembly
1. Insert the governor valve to the governor carrier
and sleeve.
2. Install the governor driven gear.
3. Install the roll pin.
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86U07B-260
LOW AND REVERSE BRAKE
Inspection
Check the following and replace any faulty parts.
1. Damaged or worn drive and driven plates
Drive plate thickness
Standard: 1.6 mm (0.063 in)
Minimum: 1.4 mm (0.055 in)
2. Broken or worn snap ring
3. Deformed or detached spring and retainer as-
sembly
4. Broken or weakened spring
Free length of spring:
20.5 mm (0.807 in)
5. Damaged or worn piston
6. Damaged seal contact area of transaxle case
7B—134 expert22 fl/m http://rutracker.org

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
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6. Damaged or cracked valve body cover
7. Damaged or cracked oil pan
8. Damaged or clogged oil strainer
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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
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
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7B—155

ASSEMBLY 7B
ASSEMBLY
PRECAUTION
(1) The automatic transaxle consists of high-precision-finished parts, necessitating careful inspection
before assembly because even a small nick could cause fluid leakage or affect performance.
(2) Clean out oil holes and oil passages with compressed air, and check that there are no obstructions.
(3) Before assembly, apply ATF to each O-ring, seal ring, rotating part, and friction part.
(4) If the brake band or drive plates are replaced with new ones, first soak them in ATF for at least
2 hours before installing.
(5) Each seal gasket and O-ring must be replaced with a new one.
(6) Be sure to install all thrust bearings and races in the correct direction and position.
ASSEMBLY—STEP 1
Torque Specifications
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11—14 N-m (110—140 cm-kg, 95—122 in-lb) 6-9 N-m (60—90 cm-kg, 52—78 in-lb)
8—11 N-m (80—110 cm-kg, 69—95 In-lb)
19—26 N m (1.9—2.6 m-kg, 14—19 ft-lb)
83U07B-366
7B—187

7B ASSEMBLY
(4) Install the detent ball, spring, washer and plug;
then tighten the plug.
Tightening torque:
12—18
N
m (1.2—1.8 m-kg, 8.7—13 ft-lb)
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Install the low and reverse brake piston.
(1) Apply ATF to the inner and outer seals, and
install them to the low and reverse brake piston.
(2) Face the outer seal lip toward the inside by
gently rolling it down around the circumference
for easier installation into the case.
(3) Install the low and reverse brake piston by
pushing evenly around the circumference, be-
ing careful not to damage the outer seal.
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(4) Install the spring and retainer assembly.
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7B-200