1987 MAZDA 626 Workshop Manual

DISASSEMBLY 7B
DISASSEMBLY—STEP 4
Component
76G07B-128
1. Governor assembly (G4A-HL)
2. Differential assembly
3. Governor outlet pipe (G4A-HL)
4. Governor inlet pipe (G4A-HL)
5. O-rings (G4A-HL)
6. 2-3 accumulator piston assembly
7. O-rings
8. Roll pin
9. Bearing housing
10. Idle gear assembly
11. Output gear assembly
12. Bearing cover assembly
13. Bearing outer races
14. Adjust shim
15. Oil seals
16. O-rings
17. Converter housing
7B—103

7B DISASSEMBLY
76G07B-129
83U07B-165
Procedure
1. Remove the governor assembly.
(1) Remove the clip, governor cover and O-ring.
(2) Remove the stopper bolt.
(3) Remove the governor assembly.
83U07B-166
2. Remove the differential assembly.
83U07B-167
7B—104

DISASSEMBLY 7B
Outlet pipe
83U07B-168
83U07B-169
83U07B-170
3. Remove the governor outlet pipe, governor inlet
pipe, and O-rings.
4. Remove the 2-3 accumulator piston assembly and
O-rings.
5. Remove the bearing housing.
(1) Remove the bolt indicated in the figure.
(2) Remove the roll pin with a pin punch.
(3) Remove the bearing housing by tapping light-
ly with a plastic hammer.
6. Remove the idle gear assembly and output gear
assembly by tapping out from the torque convert-
er side.
83U07B-171
7B-105

7B DISASSEMBLY
7. Remove the bearing cover.
(1) Remove the converter housing from the trans-
axle hanger.
(2) Remove the bearing cover bolts.
83U07B-173
8. Remove the bearing outer races.
(1) Press out the bearing outer races with the SST.
Note
Install the bearing outer race during reassem-
bly to adjust the preload.
9. Check the oil seals for damage, replace if
necessary.
10. Check the O-rings for damage, replace if
necessary.
83U07B-174
7B—106

INSPECTION AND REPAIR 7B
INSPECTION AND REPAIR
PRECAUTION
(1) Several of the parts resemble each other; organize them so that they do not get mixed up.
(2) Clean each part with cleaning oil, clean out the oil holes and oil passages with compressed air,
and check that there are no obstructions.
(3) When using cleaning oil and compressed air, wear protective eyewear.
(4) If a clutch plate or brake band is replaced with a new one, soak it in ATF for 2 hours or more
before installing.
(5) Before assembly, apply ATF to all seal rings, rotating parts, and sliding parts.
(6) All seals, gaskets and roll pins must be replaced with new ones during assembly.
(7) Use petroleum jelly, not grease where required.
(8) When it is necessary to replace a bushing, replace the assembly which includes that bushing.
76G07B-217
TORQUE CONVERTER
The torque converter is welded together and cannot
be disassembled.
Inspection
1. Check the outer part of the converter for damage
or cracks, and replace it if necessary.
2. Check whether there is any rust on the pilot hub
of the converter or on the boss. If there is any, re-
move it completely.
3. Measure the bushing of the converter boss. Re-
place the converter assembly if the bushing is
worn.
Bushing inner diameter
Standard: 53.030 mm (2.088 in)
Maximum: 53.076 mm (2.090 in)
Washing Inside of Converter
1. Drain any ATF remaining in the converter.
2. Pour in solvent [approximately 0.5 liter (0.53 US
qt, 0.44 Imp qt) ].
3. Shake the converter to clean the inside. Pour out
the solvent.
4. Clean the inside of the converter with compressed
air so that the inside is perfectly empty.
5. Pour in ATF.
6. Shake the converter to clean the inside. Pour out
the ATF.
7B—107

7B INSPECTION AND REPAIR
OIL PUMP
Disassembly
Disassemble in the sequence shown in the figure.
8—11 Nm (82—112 cm-kg, 71—97 in-lb)
24—35 N-m (2.4-3.6 m-kg, 17-26 ft-lb)
1. Bearing race
2. Seal rings
3. Oil pump cover
4. Pump flange
5. Guide ring and guide spring
6. Vane
7. Rotor
8. Spring
86U07B-174
9. Cam ring
10. Pivot roller
11. Seal pin and spring
12. Spring
13. Valve
14. Oil pump body
15. O-ring
Inspection
Check the following and replace any faulty parts.
1. Sliding surfaces of the oil pump cover and oil pump
body for damage or wear
2. Broken or worn seal ring
3. Weakened spring
Free length of springs:
(1) For the cam ring (No. 8)
41.6 mm (1.64 in)
(2) For the valve (No. 12)
35.0 mm (1.38 in)
86U07B-175
7B—108

INSPECTION AND REPAIR 7B
replace the oil pump.
1. Seal pin—Oil pump cover
Standard:
0.005—0.020 mm
(0.0002—0.0008 in)
Maximum: 0.060 mm (0.002 in)
2. Rotor—Oil pump cover
Standard:
0.005—0.020 mm
(0.0002—0.0008 in)
Maximum: 0.030 mm (0.0012 in)
3. Cam ring—Oil pump cover
Standard:
0.005—0.020 mm
(0.0002—0.0008 in)
Maximum: 0.080 mm (0.003 in)
4. Vane—Oil pump cover
Standard:
0.015—0.050 mm
(0.0006—0.0020 in)
Maximum: 0.080 mm (0.003 in)
5. Vane—Rotor groove
Standard:
0.010—0.045 mm
(0.0004—0.0018 in)
Maximum: 0.065 mm (0.0026 in)
5. Wear limit
Check each part for wear; if not within specification, replace the oil pump.
1. Oil pump body sleeve., outer di-
ameter
Standard: 28.00 mm (1.102 in)
2. Rotor bushing.... inner diameter
Standard: 28.00 mm (1.102 in)
Maximum: 28.05 mm (1.104 in)
3. Guide ring outer diameter
Standard: 57.85 mm (2.278 in)
Minimum: 57.70 mm (2.272 in)
4. Valve outer diameter
Standard: 12.00 mm (0.472 in)
Minimum: 11.86 mm (0.467 in)
5. Seal pin outer diameter
Standard: 5.00 mm (0.197 in)
Minimum: 4.90 mm (0.193 in)
4. Clearance
Measure the clearances below; if not within specification,
7B-109

7B INSPECTION AND REPAIR
Assembly
1. Install the valve and spring into the oil pump body,
and check that the valve moves smoothly.
2. Install the plug.
Tightening torque:
24—35 Nm (2.4—3.6 m-kg, 17—26 ft-lb)
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86U07B-179
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3. Install the cam ring and pivot roller onto the oil
pump body.
4. Install the rotor onto the oil pump body.
86U07B-180
5. Install the vanes into the rotor as shown.
86U07B-181
7B—110