transaxle MAZDA 626 1987 Workshop Manual

7C INSPECTION AND REPAIR
SIDE BEARING HOUSING
Disassembly
Disassemble in the sequence shown in the figure, referring to the disassembly note for specially marked
part.
1. Oil seal
2. Bearing outer
race
3. Adjust shim
4. O-ring
5. Side bearing
housing cover
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Disassembly note
Bearing outer race
Remove the bearing outer race with the SST.
Note
Install the bearing outer race during reassem-
bly of the transaxle to adjust the preload.
Inspection
Check the following and replace any faulty parts.
1. Damaged side bearing housing cover
2. Damaged or worn bushing
Assembly
1. Press the oil seal into the cover with the SST.
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7C-88

ASSEMBLY 7C
ASSEMBLY
PRECAUTION
(1) The automatic transaxle consists of high-precision-finished parts, necessitating careful inspection
before assembly because even a small nick could cause fluid leakage or affect performance.
(2) Clean out oil holes and oil passages with compressed ajr, and check that there are no obstructions.
(3) Before assembly, apply ATF to each O-ring, seal ring, rotating part, and friction part.
(4) If the brake band or drive plates are replaced with new ones, soak them in ATF for at least 2 hours
before installing.
(5) Each seal gasket and O-ring must be replaced with a new one.
(6) Be sure to install all thrust bearings and races in the correct direction and position.
ASSEMBLY—STEP 1
Torque Specifications
19—26 N-m (1.9—2.6 m-kg, 14—19 ft-lb)
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ASSEMBLY 7C
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(13) Remove the bearing housing and SST.
(14) Install the required shim(s) and press the
bearing race into the bearing housing with
a suitable pipe.
(15) Install the bearing housing.
Tightening torque:
19—26 N m (1.9—2.6 m-kg, 14—19 ft-lb)
(16) Check that the preload/pull scale reading
is within specification. If not within specifi-
cation return to step (3).
Preload: 0.03—0.9 N-m
(0.3—9.0 cm-kg, 0.26—7.81 in-lb)
Reading on pull scale:
0.3—9 N (0.03—0.9 kg, 0.066—1.98 lb)
(17) Remove the bearing housing and output
gear assembly.
2. Mount the side bearing housing to transaxle case
by gradually tightening the mounting bolts in a di-
agonal pattern.
Tightening torque:
19—26 N-m (1.9—2.6 m-kg, 14—19 ft-lb)
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7C ASSEMBLY
3. Adjust the differential side bearing preload and select the adjust shim(s) as described below.
Note
To inspect and adjust the preload, use the SST shown below.
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(1) Remove the side bearing housing race and ad-
just shims from the transaxle case. (Refer to
page 7C—88.)
(2) Set the differential assembly into the convert-
er housing.
(3) Install the outer race removed in step (1) into
the SST; then set them on the differential as-
sembly.
Caution
Eliminate the gap by turning either A or B of
the selector.
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ASSEMBLY 7C
(4) Set the six SST in the positions shown.
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Note
Install the bolts in the positions shown in the
illustration above.
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(5) Set the transaxle case on the selectors.
(6) Tighten the SST (bolts) to the specified torque.
Tightening torque:
29—46 Nm (3.0—4.7 m-kg, 22—34 ft-lb)
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(7) Turn the SST (selector) to increase the clear-
ance (indicated by the arrow) with the SST
(bars), until it no longer turns.
Note
a )This is to seat the bearings.
b )To turn the SST (B), bend the bar as shown.
(8) Turn the selector in the opposite direction until
the preload is eliminated (gap is reduced).
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7C ASSEMBLY
(9) Insert the SST through the oil seal hole of the
transaxle case and attach
it
to the pinion shaft.
(10) Mount the SST and pull scale or torque
wrench.
(11) Widen the clearance between A and B to ob-
tain the specified preload/pull scale reading.
Preload:
0.5 N-m (5 cm-kg, 4.3 in-lb)
Reading on pull scale: 5 N (0.5 kg, 1.1 lb)
Note
Read the preload when the differential starts
to turn.
(12) Measure the clearance between A and B.
(13) Add 0.15 mm (0.0059 in) to the measured
clearance, and select the shim(s) closest in
valve to that measurement.
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Thickness
of
shim
0.10
mm
(0.004
in)
0.12
mm
(0.005
in)
0.14
mm
(0.006
in)
0.16
mm
(0.0063
in)
0.18 mm (0.007
in)

0.20 mm (0.008
in)
0.50 mm (0.020
in)
0.70
mm
(0.028
in)
1.00 mm (0.039
in)
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Caution
a) Measure the clearance around the entire cir-
cumference, and select shims equivalent to
the maximum clearance.
b)The maximum allowable number of shims
is 3.
(14) Remove the transaxle case and selector.
(15) Install the required shim(s) and tap the bear-
ing race into the side bearing housing.
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ASSEMBLY 7C
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(16) Install the transaxle case.
Tightening torque:
29—46 N-m (3.0—4.7 m-kg, 22—34 ft-lb)
(17) Check that the preload is within specification.
If not within specification, return to step (2).
Preload: 2.1—3.0 N-m
(21—31 cm-kg, 18—27 in-lb)
Reading on pull scale: 20—30 N
(2.1—3.1 kg, 4.6—6.8 lb)
(18) Remove the transaxle case.
3. Install the idle gear and output gear as an assem-
bly by tapping in with a plastic hammer.
83U07B-391
4. Install the bearing housing.
(1) Mount the bearing housing onto the convert-
er housing.
Tightening torque:
19—26 N-m (1.9—2.6 m-kg, 14—19 ft-lb)
(2) Align the groove on the idle shaft as shown.
(3) Tap the roll pin in with a pin punch and
hammer.
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ASSEMBLY 7C
15. Install the drum hub assembly.
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16. Apply petroleum jelly to the thrust bearing to se-
cure it; then install it into the drum hub assembly.
Thrust bearing outer diameter:
52.9 mm (2.08 in)
17. Apply petroleum jelly to the bearing race to secure
it; then install it into the transaxle case.
Bearing race outer diameter:
51.5 mm (2.03 in)
18. Install the parking pawl assembly.
19. Move the manual shaft and check that the park-
ing pawl meshes properly with the parking gear
when the manual shaft is at P.
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20. Install the governor inlet and outlet pipe.
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ASSEMBLY 7C
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Procedure
1. Install the governor assembly.
(1) Mount the governor along with a new gasket
onto the transaxle case so that the sleeve
projection is aligned with the alignment mark
on the transaxle case.
(2) Install the governor cover along with a new
gasket.
Tightening torque:
8—11 N-m (80—110 cm-kg, 69—95 in-lb)
2. Apply a thin coat of silicone sealant to the contact
surfaces of the converter housing and transaxle
case.
3. Install the transaxle case onto the converter
housing.
Tightening torque:
29—46 N-m (3.0—4.7 m-kg, 22—34 ft-lb)
4. Install the SST into the differential side gear.
Caution
Failure to install the SST may allow the
differential side gears to become misaligned.
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7C ASSEMBLY
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5. Install the servo into the transaxle case.
(1) Install the return spring and servo retainer.
(2) Compress the servo retainer with the SST.
(3) Install the snap ring.
(4) Remove the SST.
6. Install the spacer onto the sun gear.
7. Install the sun gear into the connecting shell.
8. Apply petroleum jelly to the bearing race to secure
it; then install it onto the connecting shell.
Bearing race outer diameter:
70.0 mm (2.76 in)
9. Apply petroleum jelly to the thrust bearing to se-
cure it; then install it onto the one-way clutch inner
race.
Thrust bearing outer diameter:
69.9 mm (2.75 in)
76G07C-285 10. Install the sun gear and connecting shell into the
drum hub assembly.
11. Apply petroleum jelly to the thrust bearing to se-
cure it; then install it into the front planetary carrier.
Thrust bearing outer diameter:
46.9 mm (1.85 in)
12. Install the seal sleeve.
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7C—108