1987 MAZDA 626 Workshop Manual

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

7C INSPECTION AND REPAIR
GOVERNOR
Disassembly
Disassemble in the sequence shown in the figure. 76G07C-1E
1. Governor body
2. Separate plate
3. Filter
4. Retainer plate
5. Return spring
6. Primary
governor
7. Retainer plate
8. Return spring
9. Secondary
governor
10. Roll pin
11. Governor driven
gear
12. Governor shaft
13. Seal ring
14. Bearing race
15. Thrust bearing
16. Sleeve
76G07C-190
Inspection
Check the following and replace any faulty parts.
1. Damaged or worn valve
2. Clogged filter
3. Weakened return spring
Outer diameter Free length
Primary spring 9.0 mm (0.354 in) 17.2 mm (0.667 in)
Secondary spring 9.25 mm (0.364 in) 13.2 mm (0.520 in)
76G07C-191
76G07C-192
7C-72
Assembly
1. Install the seal rings onto the governor shaft.
2. Apply petroleum jelly to the bearing race to secure
it; then install it onto the governor shaft.
Bearing race outer diameter:
47.0 mm (1.850 in)
3. Apply petroleum jelly to the thrust bearing to se-
cure it; then install it onto the sleeve.
Thrust bearing outer diameter:
46.9 mm (1.846 in)

INSPECTION AND REPAIR 7C
4. Install the governor shaft into the sleeve.
76G07C-193
76G07C-194
76G07C-195
5. Secure the governor in a vise; then install the gover-
nor driven gear with the roll pin.
Note
Use protective plates in the vice to prevent
damage to the governor.
6. Install the secondary governor valve and return
spring; then install the retainer plate.
Note
Install the retainer plate with the spring fit over
the pin.
7. Install the primary governor and return spring; then
install the retainer plate.
Note
Install the retainer plate with the spring fit over
the pin.
76G07C-196
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7C INSPECTION AND REPAIR
8. Install the filter into the separate plate.
76G07C-198
10. Secure the governor in the vise; tighten the gover-
nor body mounting bolts to the specified torque.
Tightening torque:
8—11 N
m
(80—110 cm-kg, 69—95 in-lb)
Note
Use protective plates in the vice to prevent
damage to the governor.
76G07C-199
11. Check that when compressed air is blown through
port A, the valve functions (rattles).
Air Pressure:
491 kPa (5.0 kg/cm2, 71 psi) max.
Caution
Apply air for no more than 5 seconds.
76G07C-200
7C—74

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

7C 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 76go7c-2o2
Spring
Name Outer dia. mm (in) Free length mm (in) Wire dia. mm (in)
Throttle backup 7.3 (0.287) 36.0 (1.417) 0.8 (0.031)
Downshift 5.55 (0.219) 21.9 (0.862) 0.55 (0.022)
2-3 shift 6.9 (0.272) 41.0 (1.614) 0.7 (0.028)
1-2 shift 6.4 (0.252) 31.63 (1.245) 0.4 (0.016)
Second lock 5.55 (0.219) 33.5 (1.319) 0.55 (0.022)
Pressure regulator 11.7 (0.461) 43.0 (1.693) 1.2 (0.047)
Throttle relief 7.0 (0.276) 11.2 (0.441) 0.9 (0.035)
Orifice check 5.0 (0.197) 15.5 (0.610) 0.23 (0.009)
76G07C-203
Valve Location
63U07B-500
7C-76

INSPECTION AND REPAIR 7C
Assembly
1. Install the pressure regulator valve, spring, spring
seat, pressure regulator plug, and pressure regu-
lator sleeve.
2. Install the second lock valve and spring.
3. Install the side plate.
Tightening torque:
2.5—3.4 Nm (25—35 cm-kg, 22—30 in-lb)
76G07C-204
w
Install the 1-2 shift spring, and valve.
Install the 2-3 shift plug, spring, and 2-3 shift valve.
Install the modifier valve.
Install the side plate.
Tightening torque:
2.5—3.4 Nm (25—35 cm-kg, 22—30 in-lb)
76G07C-205
8. Install the downshift spring, and valve.
9. Install the throttle backup valve and spring.
10. Install the vacuum throttle valve.
11. Install the side plate.
Tightening torque:
2.5—3.4 N m (25—35 cm-kg, 22—30 in-lb)
76G07C-206
®—Orifice
©
1.5 mm | (0.059 in)j 1 fT—•sj-
Orifice 4> 2.0 mm
(0.079 in),
Throttle relief baii
'0
12. Install the orifice check valves (02.0 mm, (0.079
in), 1.5 mm (0.059 in)) and springs, and throttle
relief ball and spring in the lower body as shown.
76G07C-207
10,-11

7C INSPECTION AND REPAIR
—® Orifice 2.0 mm (0.079 in)
76G07C-208
76G07C-209
76G07C-210
imru . ^P^l

o
o o o
13. Install the orifice check valve (<£2.0 mm (0.079 in))
in the upper body as shown.
14. Install the separator plate on the lower body, and
hold it with clips; then install them onto the upper
body.
15. Tighten the mounting bolts to the specified torque.
Tightening torque:
A: 2.5—3.4 N-m (25—35 cm-kg, 22—30 in-lb)
B: 5—7 N m (50—70 cm-kg, 43—61 in-lb)
16. Install the oil strainer.
Tightening torque:
3—4 Nm (30—40 cm-kg, 26—35 in-lb)
17. Turn the valve body assembly over, and install the
sub-body.
Tightening torque:
2.5—3.4 N-m (25—35 cm-kg, 22—30 in-lb)
18. Install the manual valve.
76G07C-211
7C-78