1987 MAZDA 626 clutch

7B INSPECTION AND REPAIR
SMALL SUN GEAR AND ONE-WAY CLUTCH
Disassembly
Disassemble in the sequence shown in the figure.
1. Thrust bearing
2. Snap ring
3. One-way clutch
inner race
4. Thrust bearing
5. Snap ring
6. Small sun gear
7. Sun gear drum
8. Thrust bearing
9. One-way clutch
outer race
10. One-way clutch
86U07B-221
Inspection
Check the following and replace any faulty parts.
1. Sun gear drum and small sun gear for damage or
wear
2. Bushing for damage or wear
Specification:
Sun gear drum: 33.425 mm (1.316 in) max.
Small sun gear: 24.021 mm (0.946 in) max.
86U07B-222
3. Inner and outer race for damage or wear
4. Damaged or worn clutch hub
5. Damaged or worn gear
6. Damaged or worn thrust bearing
7. Broken or worn snap ring
8. One-way clutch operation
Hold the one-way clutch outer race. Check that the
inner race turns only counterclockwise.
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INSPECTION AND REPAIR 7B
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Replacement of one-way clutch
1. Remove the one-way clutch inner race.
2. Remove the one-way clutch.
3. Remove the thrust bearing.
4. Inspect the one-way clutch inner and outer race,
and replace if necessary.
5. Apply petroleum jelly to the thrust bearing to se-
cure it; then install it to the one-way clutch inner
race.
Thrust bearing outer diameter:
62.1 mm (2.44 in)
6. Install the one-way clutch into the one-way clutch
outer race.
Caution
Check that the spring cage of the one-way
clutch faces toward the outer race.
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7B INSPECTION AND REPAIR
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7. Install the one-way clutch inner race into the one-
way clutch outer race by turning inner race coun-
terclockwise.
8. Hold the one-way clutch outer race. Check that the
inner race turns only counterclockwise.
Assembly
1. Install the small sun gear into the sun gear drum.
2. Install the snap ring.
3. Apply petroleum jelly to the thrust bearing to se-
cure it; then install it to the one-way clutch inner
race.
Thrust bearing outer diameter:
62.1 mm (2.44 in)
4. Install the one-way clutch inner and outer race to
the sun gear drum.
Note
Align the splines of the one-way clutch inner
race and small sun gear clutch hub.
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INSPECTION AND REPAIR 7B
5. Install the snap ring.
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6. Check that when the small sun gear is held, the
one-way clutch outer race turns smoothly and only
clockwise.
7. Apply petroleum jelly to the thrust bearing to se-
cure it; then install it to the sun gear drum.
Thrust bearing outer diameter:
72.0 mm (2.83 in)
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7B—125

7B INSPECTION AND REPAIR
ONE-WAY CLUTCH AND CARRIER HUB ASSEMBLY
Disassembly
Disassemble in the sequence shown in the figure.
1. One-way clutch
2. Bearing races
3. Snap ring
4. Carrier hub as-
sembly
5. Inner race (Low
and reverse hub)
86U07B-235
Inspection
Check the following and replace any faulty parts.
1. Damaged or worn gear and operation
2. Clearance between pinion washer and planetary
carrier
Clearance:
0.2—0.7 mm (0.008—0.028 in)
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3. Damaged or worn inner race
4. Broken or worn snap ring
5. Damaged or worn bearing race
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INSPECTION AND REPAIR 7B
One-way clutch 6. Damaged or worn one-way clutch and operation
7. Detached roller
Note
Assemble the one-way clutch and the inner
race, then confirm that the one-way clutch ro-
tates only clockwise and smoothly.
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Assembly
1. Assemble the carrier hub assembly to the inner
race.
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2. Install th snap ring.
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3. Apply petroleum jelly to the bearing races to se-
cure them; then install them to both sides of the
one-way clutch and carrier hub assembly.
Bearing race outer diameter
Sun gear drum side: 72.0 mm (2.83 in)
3-4 clutch side: 57.0 mm (2.21 in)
Note
Install the tabs of the bearing race into the
alignment holes.
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7B—127

7B INSPECTION AND REPAIR
3-4 CLUTCH
Disassembly
Disassemble in the sequence shown in the figure referring to the disassembly note for the specially
marked part.
1. Thrust bearings
2. Snap ring
3. Retaining plate
4. Drive and driven
plates
5. Dished plate
(G4A-HL)
6. Snap ring
7. Spring and re-
tainer assembly
8. 3-4 clutch piston
9. Outer seal
10. Inner seal
11.3-4 clutch drum
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Disassembly note
3-4 clutch piston
1. Install the SST to the 3-4 clutch as shown.
2. Compress the spring and retainer assembly.
3. Remove the snap ring.
4. Remove the SST then remove the spring and re-
tainer assembly.
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5. Remove the 3-4 clutch piston with the SST and
compressed air.
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INSPECTION AND REPAIR 7B
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SB T
g. SH -i
1
Inspection
Check the following and repair or replace any faulty
parts.
1. Drive and driven plates for damage or wear
Drive plate thickness
Standard: 1.6 mm (0.063 in)
Minimum: 1.4 mm (0.055 in)
2. Clutch piston for damage or cracks
3. Clutch drum for damage or deformation
4. Seal contact areas for damage
5. Check ball for leaking or sticking
6. Spring and retainer assembly for separation or
deformation
7. Broken or worn snap ring
8. Broken or weakened spring
Free length of spring:
33.2 mm (1.307 in)
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Assembly
1. Install the 3-4 clutch piston.
(1) Apply ATF to the inner and outer seals, and
install them onto the 3-4 clutch piston.
(2) Install the piston by pushing evenly around the
circumference, being careful not to damage the
seal rings.
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2. Install the spring and retainer assembly.
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