clutch MAZDA 626 1987 Workshop Manual

7C INSPECTION AND REPAIR
REAR CLUTCH
Disassembly
Disassemble in the sequence shown in the figure, referring to the disassembly note for specially marked
parts.
76G07C-153
1. Snap ring
2. Retaining plate
3. Drive and driven
plates
4. Dished plate
5. Snap ring
6. Spring retainer
7. Return spring
8. Piston
9. Seal rings
10. Rear clutch
drum
63U07B-109
Disassembly note
Rear clutch clearance
Before disassembling the rear clutch, measure the
rear clutch clearance.
Rear clutch clearance:
0.8—1.0 mm (0.031—0.039 in)
Note
If the clearance is not within specification, ad-
just it by selecting a proper retaining plate.
(Refer to page 7C—64.)
76G07C-154
Snap ring
Compress the clutch spring, with the SST ; then re-
move the snap ring with a screwdriver.
76G07C-156
7C-62

INSPECTION AND REPAIR 7C
Piston
Remove the piston by blowing compressed air into
the fluid hole as shown.
76G07C-156
76G07C-157
76G07C-158
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 retainer for deformation
7. Broken or worn snap ring
8. Broken or weakened spring
Free length of spring:
26.2 mm (1.031 in)
Assembly
1. Apply ATF to the inner seal ring and install it into
the rear clutch drum.
2. Apply ATF to the outer seal ring, and install it onto
the piston.
3. Install the piston by pushing evenly around the cir-
cumference, being careful not to damage the seal
rings.
4. Install the return springs and spring retainer into
the piston.
76G07C-159
7C-63

7C INSPECTION AND REPAIR
5. Install the snap ring.
(1) Place the SST on the spring retainer and com-
press only enough to install the snap ring.
(2) Install the snap ring in the groove.
(3) Remove the SST.
76G07C-160
6. Install the dished plate with the beveled side fac-
ing the piston as shown; then install the drive and
driven plates.
Note
Installation order:
Driven-Drive-Driven-Drive-Driven-Drive-
Driven-Drive
7. Install the retaining plate with the step facing up-
ward; then install the snap ring.
76G07C-161
76G07C-162
7C-64
8. Check the rear clutch clearance.
(1) Measure the clearance between the snap ring
and retaining plate of the rear clutch with a feel-
er gauge.
Rear clutch clearance:
0.8—1.0 mm (0.031—0.039 in)
(2) If the clearance is not with in specification, ad-
just it by selecting a proper retaining plate.
Retaining plate sizes mm (in)
4.8 (0.189) 5.0 (0.197) 5.2 (0.205) I 5.4 (0.213)
5.6 (0.220) 5.8 (0.228) 6.0 (0.236) 6.2 (0.244)
9. Check the rear clutch operation.
(1) Assemble the front clutch, and rear clutch; then
set the clutch assembly onto the oil pump.
(2) Check the rear clutch operation by applying
compressed air through the fluid passage as
shown.
Air pressure:
392 kPa (4.0 kg/cm2, 57 psi) max.
Caution
Apply air for no more than 3 seconds.

INSPECTION AND REPAIR 7C
(3) Pour ATF into the rear clutch until the clutch
piston is fully submerged.
76G07C-164
(4) Check that no bubbles come from between the
piston and drum seal while applying com-
pressed air through the fluid passage shown.
Air pressure:
392 kPa (4.0 kg/cm2, 57 psi) max.
Caution
Apply air for no more than 3 Seconds
76G07C-165
REAR CLUTCH HUB
Disassembly
Disassemble in the sequence shown in the figure. 76G07C-166
1. Snap ring
2. Rear clutch hub
:
3;,
3. Internal gear
63U07B-124
7C—65

7C INSPECTION AND REPAIR
Inspection
Check the following and replace any faulty parts.
1. Broken or worn snap ring
2, Damaged or worn internal gear
76G07C-167
Assembly
1. Set the rear clutch hub into the internal gear.
Note
Align the splines of the rear clutch hub and
internal gear
2. Install the snap ring.
76G07C-168
DRUM HUB
Disassembly
Disassemble in the sequence shown in the figure, referring to the disassembly note for specially marked
part. 76G07C-169 1. Parking gear
spring
2. Parking gear
3. Snap ring
4. Internal gear
5. Drive hub
6. Pin
76G07C-170
7C-66

7C INSPECTION AND REPAIR
4. Install the parking gear spring.
76G07C-175
ONE-WAY CLUTCH INNER RACE
Disassembly
Disassemble in the sequence shown in the figure. 76G07C-176
1. Snap ring
2. Planetary carrier
(Rear)
3. One-way clutch
inner race
63U07B-127
Inspection
Check the following and replace any faulty parts.
1. Broken or worn snap ring
2. Damaged or worn gear
3. Worn one-way clutch inner race
4. Rotation of pinion gear
76G07C-177
7C-68

INSPECTION AND REPAIR 7C
5. Clearance between the pinion washer and plane-
tary carrier
Clearance: 0.8 mm (0.031 in) max.
76G07C-178
Assembly
Install the rear planetary carrier into the one-way
clutch inner race; then install the snap ring.
76G07C-179
BAND SERVO
Disassemble in the sequence shown in the figure.
1. Return spring
2. Servo piston
3. Outer seal ring
4. Inner seal ring
5. Servo retainer
6. Seal ring
76G07C-180
7C—69

INSPECTION AND REPAIR 7C
76G07C-185
76G07C-186
76G07C-187
PLANETARY CARRIER (FRONT)
Inspection
Check the following and replace any faulty parts.
1. Rotation of pinion gear
2. Clearance between pinion washer and planetary
carrier
Clearance: 0.8 mm (0.031 in) max.
ONE-WAY CLUTCH
Inspection
Check the following and replace any faulty parts.
1. One-way clutch operation
(1) Install the one-way clutch into the one-way
clutch inner race.
(2) Make sure that when the one-way clutch is held
and the inner race is turned, the clutch turns
smoothly in one direction only.
2. Worn bushing
Bushing inner diameter:
130.063 mm (5.121 in) max.
76G07C-188
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 low and reverse brake hub
4. Broken or weakened spring
Free length of spring:
27.7 mm (1.091 in)
5. Damaged or worn piston
6. Damaged seal contact area of transaxle case
7C-71

INSPECTION AND REPAIR 7C
CONTROL VALVE BODY
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.
Disassembly
Disassemble in the sequence shown in the figure.
2.5—3.4 N m _ (25—35 cm-kg, (7) 22—30 in-lb)
2.5—3.4 N-m (25—35 cm-kg 22—30 in-lb)
. 2.5—3.4 N-m (25—35 cm-kg, 22—30 In-lb)
2.5—3.4 N-m (25—35 cm-kg, 22—30 in-lb)
5—7 N-m {50—70 cm-kg, 43—61 In-lb)
2.5—3.4 N-m (25—35 cm-kg, 22—30 in-lb)
2.5—3.4 N-m (25—35 cm-kg, 22—30 in-lb)
5—7 N-m (50—70 cm-kg, 43—61 in-lb)
^ - 3—4 N-m (30—40 cm-kg, 26—35 in-lb)
76G07C-201
1. Manual valve
2. Oil strainer
3. Lower body
4. Separator plate
5. Throttle relief ball and
spring
6. Orifice check valve and
spring
7. Sub-body
8. Orifice check valve
9. Side plate
10. Vacuum throttle valve
11. Spring
12. Throttle backup valve
13. Downshift valve
14. Spring
15. Side plate
16. Modifier valve
17. 2-3 shift valve
18. Spring
19. 2-3 shift plug
20.1-2 shift valve
21. Spring
22. Side plate
23. Spring
24. Second lock valve
25. Pressure regulator sleeve
26. Pressure regulator plug
27. Spring seat
28. Spring
29. Pressure regulator valve
30. Upper body
7C-75

ASSEMBLY 7C
6. Install the dished plate with the dished side down-
ward as shown.
7. Install the drive and driven plates.
Note
Installation order:
Driven-Drive-Driven-Drive-Driven-Drive-
Driven-Drive
8. Install the retaining plate with the step facing
upward.
76G07C-266
9. Install the one-way clutch.
(1) Install the one-way clutch so that the side with
the bushing faces the retaining plate.
76G07C-267
(2) Set the snap ring on the one-way clutch.
(3) Install the SST.
(4) Compress the one-way clutch.
76G07C-268
(5) Install the snap ring.
(6) Remove the SST.
76G07C-269
7C—103