Page 122 of 447

7B-80 AUTOMATIC TRANSMISSION (4 A/T)
12) Disconnect couplers from solenoid valves, and transmission
temperature sensor.
Remove transmission temperature sensor.
13) Remove valve body assembly (1).
14) Remove solenoid harness assembly.
15) Remove accumulator pistons and springs.
To remove C0 (1), C2 (2) and B1 (3) accumulator pistons
and springs, position a rag on pistons to catch each piston.
To remove pistons, force low-pressure compressed air (1 kg/
cm
2, 15 psi, 100 kPa, max) into hole (4) as shown in figure,
and pop each piston into the rag.
To remove B0 and C1 accumulator pistons and springs,
remove each snap ring and accumulator spacer, then
remove spring and piston.
16) Remove torque converter housing (1).
a) Remove housing bolts.
b) Remove housing while tapping around it lightly with a plas-
tic hammer. CAUTION:
Be careful not to let manual valve fall off when removing
valve body assembly.
NOTE:
There are three kinds of bolts (bolts A, B and C) fixing
valve body assembly.
2. Bolt A
3. Bolt B
4. Bolt C
NOTE:
Do not push accumulator pistons with fingers or any-
thing before removing them. Pushing them may cause
compressed fluid in accumulator to spew out of hole and
get to your face and clothes.
NOTE:
Never reuse bolts A shown in figure.
Page 125 of 447
AUTOMATIC TRANSMISSION (4 A/T) 7B-83
27) Remove counter driven gear assembly (1) and thrust needle
roller bearing (2).
28) Remove control shift lever (1), nuts (2), washer (3) from
manual shift shaft (4).
29) Remove detent spring (1).
30) Remove manual shift shaft (1) with parking lock rod (2), and
washer (3) from transmission case.
Page 148 of 447
7B-106 AUTOMATIC TRANSMISSION (4 A/T)
VALVE BODY
1. Upper valve body 12. Lock-up control valve 23. Fail valve No.1
2. Upper valve body gasket 13. Lock-up control valve spring 24. Fail valve No.1 sleeve
3. Valve body plate 14. Lock-up signal valve plug 25. Key (short)
4. Lower valve body gasket 15. Lock-up signal valve 26. Key (long)
5. Lower valve body 16. Lock-up signal valve spring 27. Oil strainer
6. Primary regulator valve sleeve 17. Fail valve No.2 sleeve 28. Cooler by-pass valve
7. Primary regulator valve plunger 18. Fail valve No.2 29. Cooler by-pass valve spring
8. Primary regulator valve spring 19. Secondary regulator valve plug 30. Steel ball
9. Washer 20. Secondary regulator valve spring 31. Lock-up control valve
10. Primary regulator valve 21. Secondary regulator valve Apply automatic transmission fluid.
11. Lock-up control valve sleeve 22. Manual valve Do not reuse.
Page 149 of 447
AUTOMATIC TRANSMISSION (4 A/T) 7B-107
DISASSEMBLY
Valve Body Assembly
1) Remove manual valve.
2) Remove 12 bolts from lower valve body.
Upper Valve Body
1) Remove oil strainers (1) and steel balls (2).
2) Remove keys (1).
3) Pull out all sleeves, valves, plungers, springs and washer.NOTE:
There are 4 different kinds of bolt fixing upper and
lower valve body. Do not mix them up and remember
where they belong to.
When separating lower and upper valve body, be care-
ful not to let the steel ball to fall off.
Page 150 of 447
7B-108 AUTOMATIC TRANSMISSION (4 A/T)
Valve spring dimensions (Reference)
Lower Valve Body
1) Remove oil strainers (1).
2) Remove solenoid valves, if still attached.
3) Remove keys (2) and pull out all sleeve, plug, spring and
valves.
Valve spring dimensions (Reference)Spring Free length
“a” (mm)Outside diameter
“b” (mm)
Primary regula-
tor valve spring79.2 18.0
Lock-up control
valve spring31.1 8.5
Lock-up signal
valve spring36.1 8.5
3. Fail valve No.1 sleeve
4. Fail valve No.1
5. Cooler by-pass valve
6. Cooler by-pass valve spring
7. Manual valve
8. Secondary regulator valve
9. Secondary regulator valve spring
10. Secondary regulator valve plug
Spring Free length
“a” (mm)Outside diame-
ter “b” (mm)
Secondary regula-
tor valve spring38.7 8.8
Cooler by-pass
valve spring22.8 8.0
Page 152 of 447
7B-110 AUTOMATIC TRANSMISSION (4 A/T)
Lower Valve Body
1) Apply A/T fluid to each valve, spring, sleeve and key.
Insert them, then fix with key.
2) Insert oil strainers to lower valve body.
VALVE BODY ASSEMBLY
1) Install new gasket for lower valve body (3), valve body plate
(2) and new gasket for upper valve body (1) to lower valve
body (4).
2) Make sure that steel balls (2) are at the location shown in fig-
ure. NOTE:
Make sure that the fail valve No.2 and secondary regula-
tor valve is inserted in the right direction.
NOTE:
Clean oil strainer before installing.
1. Oil strainer
2. Key (short)
3. Fail valve No.1 sleeve
4. Fail valve No.1
5. Cooler by-pass valve
6. Cooler by-pass valve spring
7. Manual valve
8. Secondary regulator valve
9. Secondary regulator valve spring
10. Secondary regulator valve plug
1. Upper valve body
Page 153 of 447
AUTOMATIC TRANSMISSION (4 A/T) 7B-111
3) Assemble lower valve body with gaskets and plate over
upper valve body.
First tighten bolts A then the other bolts.
Tightening torque
Valve body bolts (a) : 5.5 N·m (0.55 kg-m, 4.0 lb-ft)
4) Install manual valve to valve body assembly.NOTE:
Be careful not to fall steel balls off.
There are four kinds of bolts fixing upper and lower
valve body. Refer to the table below for the bolt specifi-
cations.
Bolt Length “a”Pieces
A 20 mm (0.79 in.) 2
B 23 mm (0.91 in.) 2
C 29.5 mm (1.16 in.) 3
D 42 mm (1.65 in.) 5
1. Bolt A 3. Bolt C
2. Bolt B 4. Bolt D
Page 154 of 447
7B-112 AUTOMATIC TRANSMISSION (4 A/T)
DIFFERENTIAL ASSEMBLY
Servicing procedure for differential assembly is similar to that for manual transmission. Refer to Section 7A of
this manual for adjustment procedure.
DISASSEMBLY
1) Remove R bearing and then speed sensor rotor using spe-
cial tool and puller.
Special tool
(A) : 09925-88210
2) Hold differential assembly with soft jawed vise, remove final
gear (1).
1. Differential pinion 7. Differential right side bearing (R bearing) 13. Pinion shaft pin
2. Differential gear
8. Speedometer sensor rotor Apply automatic transmission fluid.
3. Washer (for pinion)
9. Differential case Tightening torque
4. Pinion shaft
10. Final gear Do not reuse.
5. Washer (for gear) 11. Bolt
6. Differential side oil seal
: Apply grease 99000-25030 to oil seal lip.
12. Differential left side bearing (L bearing)
1. Differential gear assembly