1987 MAZDA 626 differential

7B INSPECTION AND REPAIR
5. Install the roll pin.
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6. Install the thrust washers and side gears into the
gear case at the same time, then turn them back
on the pinion gear and align them with the pinion
shaft hole.
7. Set the steel ball in the hole in the gear case.
Note
Affix the ball with petroleum jelly.
8. Install the governor drive gear onto the gear case
with a plastic hammer.
9. Install the snap ring.
10. Check and adjust the backlash of the side gears
and pinion gears as follows:
(1) Install the left and right driveshafts in the
differential assembly.
(2) Support the driveshafts on V-blocks.
(3) Measure the backlash of both pinion gears.
Backlash:
Standard 0.025—0.1 mm (0.001—0.004 in)
Maximum 0.5 mm (0.020 in)
11. If the backlash is not within specification, replace
the differential assembly.
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7B—180

ASSEMBLY 7B
(13) Remove the bearing housing and SST.
(14) Install the required shim(s) and press the
bearing race into the bearing housing with
the SST.
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2. Adjust the differential side bearing preload
Note
To inspect and adjust the preload, use
(15) Install the bearing housing.
Tightening torque:
19—26 Nm (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 (2).
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.
select the adjust shim(s) as described below.
SST shown below.
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7B ASSEMBLY
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(1) Remove the bearing outer race and adjust
shims from the transaxle case. (Refer to page
7B—106)
(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.
(4) Set the six SST in the positions shown.
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:
37—52 N-m (3.8—5.3 m-kg, 27—38 ft-lb)
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ASSEMBLY 7B
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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 un-
til the preload is eliminated (gap is reduced).
(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 0.3 mm (0.0118 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.
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7B ASSEMBLY
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(14) Remove the transaxle case and selector.
(15) Install the required shim(s) and tap the bear-
ing race into the transaxle case.
(16) Install the transaxle case.
Tightening torque:
37—52 Nm (3.8—5.3 m-kg, 27—38 ft-lb)
(17) Check that the preload is within specification.
If not within specification, return to step (2).
Preload: 2.9—3.9 N-m
(30—40 cm-kg, 26—35 in-lb)
Reading on pull scale: 29—39 N
(3.0—4.0 kg, 6.6—8.8 lb)
(18) Remove the transaxle case and differential as-
sembly.
3. Install the idle gear and output gear as an assem-
bly by tapping in with a plastic hammer.
4. Install the bearing housing.
(1) Install the bearing housing on the converter
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 with the
matching mark on the bearing housing.
(3) Tap the roll pin in with a pin punch and
hammer.
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7B—194

ASSEMBLY 7B
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Inlet pipe
Outlet pipe
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5. Apply ATF to the O-rings and install them into the
2-3 accumulator; then temporarily install the 2-3
accumulator piston assembly in the converter
housing.
6. Apply ATF to the O-rings and install them onto the
governor inlet pipe and governor outlet pipe; then
temporarily install the inlet and outlet pipes.
7. Tighten the bolts.
Tightening torque: 8—11 N-m
(80—110 cm-kg, 69—95 in-lb)
8. Set the differential assembly into the converter
housing.
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7B—195

7B ASSEMBLY
11. Install the SST to the differential side gear.
Caution
Failure to install the SST may allow the
differential side gears to become misposi-
tioned.
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ASSEMBLY-STEP 3
Procedure
1. Temporarily install the SST to hold the turbine shaft.
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w
2. Install the turbine shaft and 3-4 clutch assembly.
(1) Assemble the turbine shaft and 3-4 clutch as-
sembly.
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(2) Check that the thrust bearing and bearing race
are installed in the correct position.
(3) Install the turbine shaft and 3-4 clutch assem-
bly into the transaxle case.
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7B—202

7B INSTALLATION
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Standard bolt Reamer bolt
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14. Replace the clips at the end of the driveshaft and
joint shaft with new ones.
15. Install the joint shaft and right driveshaft as follows:
(1) Remove the SST and insert the joint shaft into
the transaxle.
(2) Mount the joint shaft bracket onto the engine.
(3) Install and tighten the reamer bolts; then install
and tighten the standard bolts.
Tightening torque:
Reamer bolts 6.9—9.8 N-m
(70—100 cm-kg, 61—87 in-lb)
Standard bolts 42—62 N-m
(4.3—6.3 m-kg, 31.1—45.6 ft-lb)
(4) Pull the front hub outward to connect the
driveshaft to the joint shaft.
(5) Push the joint from the differential side to se-
curely connect the driveshaft to the joint shaft.
Caution
a) Do not damage the oil seal.
b) After installation, pull the front hub outward
to verify that the driveshaft does not come.
16. Install the left driveshaft as follows:
(1) Pull the front hub outward to insert the
driveshaft into the transaxle.
(2) Push the joint from the differential side to con-
nect the driveshaft to the differential side gear.
Caution
a) Do not damage the oil seal.
b) After installation, pull the front hub outward
to verify that the driveshaft does not come
out.
17. Install the lower arm ball joints to the knuckles and
tighten the bolts and nuts.
Tightening torque:
43—54 N-m (4.4—5.5 m-kg, 32—40 ft-lb)
18. Install the undercover.
19. Install the stabilizer bar control link as follows:
(1) Install the stabilizer bar control link.
(2) Adjust protrusion A to 20.1 mm (0.79 in).
(3) Tighten bolt B to the specified torque.
Tightening torque:
16—23 N-m (1.6—2.3 m-kg, 12—17 ft-lb)
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