1987 MAZDA 626 Workshop Manual

INSPECTION AND REPAIR 7B
3. Install the spring and retainer assembly.
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4. Install the SST in the coasting clutch as shown.
5. Compress the spring and retainer assembly.
6. Install the snap ring.
7. Remove the SST.
8. Install the dished plate with the dished side upward.
9. Install the drive and driven plates.
Note
Installation order:
Driven-Drive-Driven-Drive
10. Install the retaining plate.
11. Install the snap ring.
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7B INSPECTION AND REPAIR
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12. Check the coasting clutch clearance.
(1) Measure the clearance between the snap ring
and the retaining plate of the coasting clutch.
(2) If the clearance is not within specification, ad-
just it by selecting a proper retaining plate.
Coasting clutch clearance:
1.0—1.2 mm (0.040—0.047 in)
Retaining plate sizes mm (in)
4.6 (0.181) 4.8 (0.189) 5.0 (0.197)
5.2 (0.205) 5.4 (0.213) 5.6 (0.220)
Forward clutch
1. Install the dished plate with the dished side
downward.
2. Install the drive and driven plates.
Note
Installation order:
Driven-Drive-Driven-Drive-Driven-Drive
3. Install the retaining plate.
4. Install the snap ring.
5. Check the forward clutch clearance.
(1) Measure the clearance between the snap ring
and the retaining plate of the forward clutch.
(2) If the clearance is not within specification, ad-
just it by selecting a proper retaining plate.
Forward clutch clearance:
1.0—1.2 mm (0.040—0.047 in)
Retaining plate sizes mm (in)
5.9 (0.232) 6.1 (0.240) 6.3 (0.248)
6.5 (0.256) 6.7 (0.264) 8.9 (0.350)
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7B—120

INSPECTION AND REPAIR 7B
6. Check for the clutch operation as follows.
(1) Set the clutch assembly onto the oil pump.
(2) Check the clutch operation by applying com-
pressed air through the fluid passages as
shown.
Applied air pressure:
392 kPa (4.0 kg/cm2, 57 psi)
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(3) Pour in ATF so that the reverse piston, coast-
ing clutch drum, and coasting clutch piston are
fully submerged.
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(4) Check that no bubbles come from between the
piston and drum seal when applying com-
pressed air through the fluid passages as
shown.
Caution
The compressed air must be under 392 kPa
(4.0 kg/cm2, 57 psi), and should not applied
for over 3 seconds.
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7. Apply petroleum jelly to the thrust bearings to se-
cure them; then install them on both sides of the
reverse and forward drum.
Thrust bearing outer diameter
Oil pump side: 86.0 mm (3.39 in)
Small sun gear and one-way clutch side:
56.1 mm (2.21 in)
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7B-121

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
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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.
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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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7B—122

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)
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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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