check oil MAZDA 626 1987 Workshop Manual

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

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

INSPECTION AND REPAIR 7C
Disassembly note
Bearing outer race
Remove the bearing outer race with the SST.
Inspection
Check the following and replace any faulty parts.
1. Damaged bearing cover
2. Damaged or worn bushing
76G07C-223
Assembly
1. Press the bearing outer race into the cover.
2. Press the oil seal into the cover.
76G07C-224
BEARING HOUSING
Disassembly
Remove the bearing outer race with the SST.
Note
Install the bearing outer race during reassem-
bly of the transaxle to adjust the preload.
76G07C-225
Inspection
Check the following and replace any faulty parts.
1. Damaged bearing housing
2. Damaged bearing outer race
86U07B-351
7C-87

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
76G07C-226
76G07C-227
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.
76G07C-228
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)
76G07C-229
7C-89

7C ASSEMBLY
7C-112
Procedure
1. Use the following procedure to adjust the total end
play and select a suitable bearing race.
(1) Remove the pump cover from the oil pump.
(2) Install the bearing into the rear clutch drum.
(3) Mount the bearing race to the pump cover; and
then install it into the front clutch drum.
Note
A front clutch drum end play adjust shim must
not be used between the pump cover and the
front clutch drum when checking total end
play.
(4) Position a straight edge on the transaxle case,
and measure the clearance between the
straight edge and either the pump cover or the
transaxle case.
a) If the pump cover surface is lower than the
transaxle case, measure the clearance be-
tween the straight edge and the pump
cover.
Specification:
0.10 mm (0.004 in) max.
Note
a) Make the measurement without the oil
pump gasket installed.
b) Measured clearance plus thickness of oil
pump gasket equals total end play.
b) If the pump cover surface is higher than the
transaxle case, measure the clearance be-
tween the straight edge and the transaxle
case.
Specification:
0.15 mm (0.006 in) max.
Caution
Do not position the straight edge on the bolt
holes for mounting the oil pump to the trans-
axle case.
Note
Thickness of oil pump gasket minus measured
clearance equals total end play.
2. If the end play is not within specification, adjust it
by selecting the proper bearing race.
Caution
Use only one bearing race.
Bearing race outer diameter: 41.0 mm (1.61 in)
Bearing race sizes mm (in)

1.2 (0.047) 1.4 CO.055) 1.6 (0.063)
1.8 (0.071) 2.0 (0.079) 2.2 (0.087)

3. Reinstall the oil pump cover.
Tightening torque: 11—14 N-m
(110—140 cm-kg, 95—122 in-lb)

7C ASSEMBLY
76G07C-303
76G07C-304
76G07C-305
5. Check that bearing race and shim are installed cor-
rectly.
6. Apply sealant to the seat face of the arrow marked
bolts install the oil pump.
Tightening torque:
15—22 N m (1.5—2.2 m-kg, 11—16 ft-lb)
7. Adjust the band brake.
(1) Apply sealant to threads; and tighten the
anchor-end bolt.
Tightening torque: 12—15 N-m
(120—150 cm-kg, 104—130 in-lb)
(2) Loosen the anchor-end bolt 2 turns.
(3) Tighten the locknut to the specified torque.
Tightening torque:
55—80 N-m (5.6—8.2 m-kg, 41—59 ft-lb)
76G07C-306
7C-114

HYDRAULIC CIRCUIT 7C
R RANGE
Band servo
Release side
Oil cooler
Low and reverse brake 1 pressure Vacuum diaphragm Kick-down solenoid Rear clutch pressure
Front clutch pressure
Downshift valve H Oil pump Vacuum throttle valve
Throttle backup valve
Orifice check valve
Modifier 15| valve
2-3 shift valve
Second lock valve
Orifice valve Pressure regulator valve
Line pressure t4s2
Operating line pressure
Governor pressure
Torque converter
Throttle pressure Secondary x governor valve Primary governor valve
76G07C-340
7C—127

7C HYDRAULIC CIRCUIT
N RANGE
Oil cooler
Low and reverse brake •l pressure Vacuum diaphragm Kick-down solenoid
Rear clutch pressure
Front clutch pressure
Downshift valve 11 Oil pump Throttle backup valve
Vacuum throttle valve
x 18 Orifice YjI check valve H [ Throttle relief I valve
Modifier 15| valve Orifice check
I
valve
Orifice check valve 11 j! Pressure regulator valve
Line pressure
Governor pressure
Torque converter
Throttle pressure Primary governor valve Secondary x governor valve
76G07C-341
7C—128

HYDRAULIC CIRCUIT 7C
D RANGE (1ST GEAR)
Band servo
Kick-down solenoid
Downshift valve Throttle backup valve
76G07C-342
Pressure regulator valve
Line pressure
Operating line pressure
Governor pressure
Torque converter
Throttle pressure
Orifice ch< valve
Secondary * Primary x governor valve governor valve
Vacuum | throttle valve
valve
Apply side
Release side
Low and reverse brake pressure
Rear clutch pressure
Vacuum diaphragm
Oil pump
Throttle relief valve
J Orifii check valve
Orifice check valve
Front clutch pressure
Modifier 1! valve
7C—129