Mitsubishi Galant. Manual — part 458
23B-1
GROUP 23B
CONTENTS
GENERAL DESCRIPTION. . . . . . . . .
SPECIAL TOOLS. . . . . . . . . . . . . . . .
TRANSAXLE . . . . . . . . . . . . . . . . . . .
TRANSAXLE DISASSEMBLY AND ASSEMBLY
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OIL PUMP . . . . . . . . . . . . . . . . . . . . .
OIL PUMP DISASSEMBLY AND ASSEMBLY
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UNDERDRIVE CLUTCH AND INPUT SHAFT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UNDERDRIVE CLUTCH AND INPUT SHAFT
DISASSEMBLY AND ASSEMBLY . . . . . . .
REVERSE AND OVERDRIVE CLUTCH
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REVERSE AND OVERDRIVE CLUTCH
DISASSEMBLY AND ASSEMBLY . . . . . . .
PLANETARY GEAR . . . . . . . . . . . . .
PLANETARY GEAR DISASSEMBLY AND ASSEMBLY
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LOW-REVERSE BRAKE . . . . . . . . . .
LOW-REVERSE BRAKE DISASSEMBLY AND
ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . .
SECOND BRAKE. . . . . . . . . . . . . . . .
SECOND BRAKE DISASSEMBLY AND ASSEMBLY
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OUTPUT SHAFT. . . . . . . . . . . . . . . . .
OUTPUT SHAFT DISASSEMBLY AND ASSEMBLY
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIFFERENTIAL. . . . . . . . . . . . . . . . . .
DIFFERENTIAL DISASSEMBLY AND ASSEMBLY
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VALVE BODY . . . . . . . . . . . . . . . . . . .
VALVE BODY DISASSEMBLY AND ASSEMBLY
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPEEDOMETER GEAR . . . . . . . . . . .
SPEEDOMETER GEAR DISASSEMBLY AND
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . .
DRIVE SHAFT OIL SEAL . . . . . . . . . .
DRIVE SHAFT OIL SEAL DISASSEMBLY AND
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIFICATIONS . . . . . . . . . . . . . . .
TORQUE SPECIFICATION. . . . . . . . . . . . .
GENERAL SPECIFICATIONS . . . . . . . . . .
SERVICE SPECIFICATIONS . . . . . . . . . . .
VALVE BODY SPRING IDENTIFICATION .
ADJUSTING PLATE, SNAP RING AND SPACERS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SEALANTS AND ADHESIVES . . . . . . . . . .
GENERAL INFORMATION
TSB Revision
AUTOMATIC TRANSAXLE OVERHAUL
23B-2
.
G EN ER A L IN FO R M ATIO N
M1233000100038
This automatic transaxle is made up of the following main parts.
The torque converter employs a 3 element, 1 step, 2 phase lock-up clutch.
The gear train is made up of 3 multi-plate clutches, 2 multi-plate brakes and 2 planetary gears made up of a
sun gear, carrier, pinion gear and annulus gear.
The cases consist of a converter housing, transaxle case, rear cover and a valve body cover.
Parts related to oil pressure regulation are the oil pump, which pressurizes the oil; the regulator, which
controls the pressure setting; the solenoid valve, which changes the oil pressure with electrical signals; the
pressure control valve, which controls the oil pressure coming from the solenoid valve that effects each clutch
and brake; each kind of valve, which carry out the retention of the oil pressure through the lines; and finally
the valve body, which houses all the valves.
SECTIONAL VIEW
<F4A42>
AKX01131
1
2
3
4
5
6
7
19
11
12
18
14
15
17
13
AB
16
9
10
8
1.
REVERSE CLUTCH
2.
OVERDRIVE PLANETARY CARRIER
3.
SECOND BRAKE
4.
LOW-REVERSE BRAKE
5.
OUTPUT PLANETARY CARRIER
6.
ONE-WAY CLUTCH
GENERAL INFORMATION
TSB Revision
AUTOMATIC TRANSAXLE OVERHAUL
23B-3
<F4A51>
7.
TRANSFER DRIVE GEAR
8.
TRANSAXLE CASE
9.
UNDERDRIVE CLUTCH
10. TORQUE CONVERTER
11. TORQUE CONVERTER CLUTCH
12. INPUT SHAFT
13. OIL PUMP
14. CONVERTER HOUSING
15. DIFFERENTIAL
16. TRANSFER DRIVEN GEAR
17. OUTPUT SHAFT
18. REAR COVER
19. OVERDRIVE CLUTCH
AKX01109
7
8
10
1
2 3 4
5
6
9
19
18
11
12
13
14
15
16
17
AB
1.
REVERSE CLUTCH
2.
OVERDRIVE PLANETARY CARRIER
3.
SECOND BRAKE
4.
LOW-REVERSE BRAKE
5.
OUTPUT PLANETARY CARRIER
6.
ONE-WAY CLUTCH
7.
TRANSFER DRIVE GEAR
8.
TRANSAXLE CASE
9.
UNDERDRIVE CLUTCH
10. TORQUE CONVERTER
11. TORQUE CONVERTER CLUTCH
GENERAL INFORMATION
TSB Revision
AUTOMATIC TRANSAXLE OVERHAUL
23B-4
HYDRAULIC CIRCUIT
12. INPUT SHAFT
13. OIL PUMP
14. CONVERTER HOUSING
15. DIFFERENTIAL
16. TRANSFER DRIVEN GEAR
17. OUTPUT SHAFT
18. REAR COVER
19. OVERDRIVE CLUTCH
AKX00963
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
RND
P3
2
L
27
30
28
29
31
AB
1.
REVERSE CLUTCH
2.
LOW-REVERSE BRAKE
3.
SECOND BRAKE
4.
UNDERDRIVE CLUTCH
5.
OVERDRIVE CLUTCH
6.
LOW-REVERSE ACCUMULATOR
7.
SECOND ACCUMULATOR
8.
UNDERDRIVE ACCUMULATOR
9.
OVERDRIVE ACCUMULATOR
10. TORQUE CONVERTER CLUTCH
11. FAIL-SAFE VALVE A
12. FAIL-SAFE VALVE B
13. TORQUE CONVERTER CLUTCH
CONTROL VALVE
14. SWITCHING VALVE
15. LOW-REVERSE PRESSURE CONTROL
VALVE
16. SECOND PRESSURE CONTROL VALVE
17. UNDERDRIVE PRESSURE CONTROL
VALVE
18. OVERDRIVE PRESSURE CONTROL
VALVE
19. TORQUE CONVERTER CLUTCH
CONTROL SOLENOID VALVE
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