1987 MAZDA 626 maintenance

MANUAL TRANSAXLE
OUTLINE 7 A— 2
STRUCTURAL VIEW 7A— 2
CROSS-SECTIONAL VIEW 7A— 3
SPECIFICATIONS 7A— 4
TROUBLESHOOTING GUIDE 7A— 5
ON-VEHICLE MAINTENANCE 7A— 6
TRANSAXLE OIL 7A— 6
DRIVESHAFT OIL SEALS 7A— 7
REMOVAL 7A—10
DISASSEMBLY 7A—18
STEP 1 7A—18
STEP 2 7A—20
STEP 3 7A—22
STEP 4 7A—25
INSPECTION 7A—26
ASSEMBLY 7A—29
STEP 1 7A—29
STEP 2 7A—31
STEP 3 7A—36
STEP 4 7A—44
INSTALLATION 7A—49
TRANSAXLE CONTROL 7A—58
76G07A-001

7A ON-VEHICLE MAINTENANCE
61G07X-189
61G07X-190
61G07X-191
ON-VEHICLE MAINTENANCE
TRANSAXLE OIL
Inspection
1. Park the vehicle on level ground.
2. Remove the speedometer cable dust cover, and
disconnect the cable from the speedometer driv-
en gear.
3. After removing the bolt, pull the gear case to re-
move
it
from the housing. (Insert a flat-tipped screw-
driver between the speedometer gear case and
the clutch housing, and use
it
to pry the gear case
loose if necessary.)
4. Check that the oil level is between the "F" and "L".
5. If not, add the necessary amount of the specified
oil through the gear case hole.
Replacement
1. Park the vehicle on level ground.
2. Remove the speedometer driven gear.
(See "Inspection" section above.)
3. Remove the drain plug, and drain the oil.
4. Replace the drain plug, and add the necessary
amount of the specified oil through the speedom-
eter gear case hole.
Specified oil
Type
ATF: DEXRON II
Above -18°C (0°F):
API: GL-4 or GL-5
SAE 80W-90 or SAE 90
Capacity:
3.35 liters (3.6 US qt, 3.0 Imp qt)
76G07A-006
7A—6

ON-VEHICLE MAINTENANCE 7A
DRIVESHAFT OIL SEALS
Replacement
Jack up the vehicle, support it on safety stands, and
then drain the transaxle oil. Next, use the following
procedure to replace the driveshaft oil seals:
1. Remove the front wheel(s).
2. Remove the splash shield(s).
3. Separate the front stabilizer from the lower arm.
61G07X-170
4 Remove the bolt and pull the lower arm downward.
Separate the knuckle from the lower arm ball-joint.
Note
Be careful not to damage the ball-joint dust
boot.
Remove the cotter pin then disconnect the tie-rod
end with the SST.
86U07A-009
6. Separate the driveshaft by pulling the front hub out-
ward. Do not use too much force at once, increase
the force gradually.
Note
a) Do not to allow the driveshaft ball-joint to
be bent to its maximum extent.
b) Support the driveshaft using string, wire,
etc.
86U07A-010
7. Remove the oil seal with a flat-tipped screwdriver.
86U07A-011
7A-7

7A ON-VEHICLE MAINTENANCE
86U07A-012
86U07A-013
86U07A-014
8. Tap the new oil seal into the transaxle case with
the SST.
Note
a) Tap in until the oil seal installer contacts the
case.
b)Coat the oil seal lip with transaxle oil.
9. Replace the driveshaft end clip with a new one.
Insert the clip with the gap at the top of the groove.
10. Install the driveshaft as follows:
(1) Pull the front hub outward, then
fit
the driveshaft
into the transaxle.
(2) Insert the driveshaft into the transaxle by push-
ing on the wheel hub assembly.
Note
a) Be careful not to damage the oil seal.
b) After installation is finished, pull the front
hub slowly outward to check that the
driveshaft is held securely by the clip.
11. Install the lower arm ball-joint to the knuckle, and
tighten the clinch bolt.
Tightening torque:
43—54 N-m (4.4—5.5 m-kg, 32—40 ft-lb)
12. Install the tie-rod end and new cotter pin.
Tightening torque:
29—44 N m (3.0—4.5 m-kg, 22—33 ft-lb)
86U07A-015
7 A—8

ON-VEHICLE MAINTENANCE 7A
13. Adjust and tighten the stabilizer.
Tightening torque:
16—23 Nm (1.6—2.3 m-kg, 12—17 ft-lb)
Dimension: 20.1 mm (0.79 in)
86U07A-016
76G07A-007
14. Install the drain plug.
Tightening torque:
39—59 Nm (4.0—6.0 m-kg, 29—43 ft-lb)
15. Install the wheel.
Tightening torque:
88—118 Nm (9.0—12.0 m-kg, 65—87 ft-lb)
16. Add the correct quantity of the specified oil.
Type: A.T.F.: DEXRON II
Above -18°C (0°F):
API: GL-4 or GL-5
SAE 80W-90 or SAE 90
Capacity: 3.35 liters (3.6 US qt, 3.0 Imp qt)
7A—9

7B
AUTOMATIC TRANSAXLE
(Electronically Controlled and 4-Speed)
OUTLINE 7B— 2
SPECIFICATIONS 7B— 2
COMPONENT LOCATION 7B— 3
STRUCTURAL VIEW 7B— 5
OPERATION OF COMPONENTS 7B— 6
FLUID PASSAGE LOCATION 7B— 9
TROUBLESHOOTING (G4A-EL) 7B— 12
GENERAL NOTE 7B— 12
STEP 1
(WARNING CODE RETRIEVAL) 7B— 15
STEP 2
(PRELIMINARY INSPECTION) 7B— 22
STEP 3 (SIGNAL INSPECTION) 7B— 24
STEP 4 (STALL TEST) 7B— 27
STEP 5 (TIME LAG TEST) 7B— 30
STEP 6 (OIL PRESSURE TEST) 7B— 31
STEP 7 (ROAD TEST) 7B— 34
TROUBLESHOOTING (G4A-HL) 7B— 41
GENERAL NOTE 7B— 41
STEP 1
(PRELIMINARY INSPECTION) 7B— 44
STEP 2 (ELECTRICAL
SYSTEM INSPECTION) 7B— 47
STEP 3 (STALL TEST) 7B— 49
STEP 4 (TIME LAG TEST) 7B- 52
STEP 5 (ROAD TEST) 7B— 53
STEP 6 (OIL PRESSURE TEST) 7B— 58
ELECTRICAL SYSTEM
COMPONENTS 7B— 63
MODE SWITCH (G4A-EL) 7B— 63
HOLD SWITCH (G4A-EL) 7B— 63
OD OFF SWITCH (G4A-HL) 7B— 64
INHIBITOR SWITCH 7B- 65
WATER TEMPERATURE SWITCH 7B— 66
FLUID TEMPERATURE SWITCH
(G4A-EL) 7B— 66
BRAKE LIGHT SWITCH
(G4A-EL) 7B— 66
KICK-DOWN SWITCH (G4A-HL) 7B— 67
PULSE GENERATOR (G4A-EL) 7B- 68
VEHICLE SPEED SENSOR
(G4A-EL) 7B— 68
CRUISE CONTROL SWITCH
(CRUISE CONTROL UNIT) 7B— 68
IDLE SWITCH AND THROTTLE
SENSOR (G4A-EL) 7B— 68
OD RELEASE SOLENOID
VALVE (G4A-HL) 7B— 68
SOLENOID VALVES (G4A-EL) 7B— 69
NO LOAD SIGNAL (G4A-EL) 7B— 69
MODE, AND HOLD INDICATOR
LIGHT (G4A-EL) 7B— 69
OD OFF INDICATOR LIGHT
(G4A-HL) 7B— 69
EC-AT CONTROL UNIT
(G4A-EL) 7B— 69
ON-VEHICLE MAINTENANCE 7B— 71
AUTOMATIC TRANSAXLE
FLUID (ATF) 7B— 71
SELECTOR LEVER 7B— 72
THROTTLE CABLE 7B— 73
CONTROL VALVE BODY 7B— 77
OIL STRAINER 7B— 79
ADJUSTMENT OF 2-4 BRAKE
BAND 78— 80
REPLACEMENT OF
DRIVESHAFT OIL SEAL 7B— 80
OIL COOLER 7B— 81
GOVERNOR (G4A-HL) 7B— 82
REMOVAL 7B— 83
PRECAUTION 7B— 83
DISASSEMBLY 7B— 88
DISASSEMBLY-STEP 1 7B— 88
DISASSEMBLY-STEP 2 7B— 94
DISASSEMBLY-STEP 3 7B— 99
DISASSEMBLY-STEP 4 7B—103
INSPECTION AND REPAIR 7B—107
PRECAUTION 7B—107
TORQUE CONVERTER 7B—107
OIL PUMP 7B—108
CLUTCH ASSEMBLY 7B—113
SMALL SUN GEAR AND
ONE-WAY CLUTCH 7B—122
ONE-WAY CLUTCH AND
CARRIER HUB ASSEMBLY 7B-126
3-4 CLUTCH 7B—128
2-3 ACCUMULATOR 7B—132
GOVERNOR ASSEMBLY
(G4A-HL) 7B-133
LOW AND REVERSE BRAKE 7B—134
2-4 BRAKE BAND 7B—135
BAND SERVO 7B—135
OTHER INSPECTION 7B—135
CONTROL VALVE BODY
(G4A-EL) 7B-136
CONTROL VALVE BODY
(G4A-HL) 7B-155
DIFFERENTIAL 7B—177
OUTPUT GEAR 7B—181
IDLE GEAR 7B—182
BEARING COVER ASSEMBLY 7B—185
BEARING HOUSING 7B—186
ASSEMBLY 7B-187
PRECATION 7B—187
ASSEMBLY-STEP 1 7B—187
ASSEMBLY-STEP 2 7B—197
ASSEMBLY-STEP 3 7B—202
ASSEMBLY-STEP 4 7B—208
INSTALLATION 7B—215
TORQUE SPECIFICATIONS 7B—215
HYDRAULIC CIRCUIT (G4A-EL) 7B—221
HYDRAULIC CIRCUIT (G4A-HL) 7B—239
76G07B-001

ON-VEHICLE MAINTENANCE 7B
ON-VEHICLE MAINTENANCE
AUTOMATIC TRANSAXLE FLUID (ATF)
Inspection for Fluid Leaks
Check for fluid leaks; the following figure shows the locations where fluid leakage may possibly occur.
1. Oil pan
2. Control valve body cover
3. Oil pump
4. Inhibitor switch
5. Speedometer driven gear
6. Pulse generator (G4A-EL)
7. Oil filler tube
8. Throttle cable
9. Bearing cover
76G07B-085
10. Driveshaft
11. Square head plug
12. Transaxle case
13. Drain plug
14. Oil cooler return pipe
15. Oil cooler outlet pipe
16. Fluid temperature switch (G4A-EL)
17. Blind plugs
18. Governor cover (G4A-HL)
Inspection of Level
1. Apply the parking brake and position wheel chocks
to prevent the car from rolling forward.
Note
Place the car on a flat, level surface.
2. Run the engine so that the automatic transaxle fluid
reaches specified temperature.
3. While the engine is idling, shift the select lever from
P to L or P to 1 and back again.
4. Let the engine idle.
5. Shift the select lever to P.
76G07B-086
7B—71

7B ON-VEHICLE MAINTENANCE
86U07B-064
86U07B-065
t «
•A
0 0
0 »
LX] O 9
m
(2)

(1)

Button need not
be depressed
Button must be pressed
76F07B-022
6. Ensure that the ATF level is between the F and L
marks. Add ATF to specification, if necessary.
Low temperature scale:
20°C (68°F)
High temperature scale:
65°C (149°F)
ATF type:
Dexron II or M HI
Inspection of Condition
1. Check the ATF for discoloration.
2. Check the ATF for any unusual smell.
Note
Determine whether or not the automatic trans-
mission should be disassembled by observ-
ing the condition of fluid carefully.
If the fluid is muddy and varnished, it indicates
burned drive plates.
SELECTOR LEVER
Inspection
1. Check that the selector lever can only be shifted
as shown in the figure.
2. Make sure there is a click at each range when shift-
ed from P <-> L or P <-» 1 range.
3. Check that the position of the selector lever and
the indicator are exact.
4. Check that the button returns smoothly when used
to shift the selector.
Adjustment
1. Loosen locknuts A, B, and lockbolt C.
2. Shift the selector lever to P range.
3. Shift the transaxle to P range by moving the man-
ual shaft of the transaxle.
4. While holding the selector lever forward in P range,
tighten lockbolt C to the specified torque.
Tightening torque:
8—11 N-m (80—110 cm-kg, 67—95 in-lb)
76F07B-023
7B—72