Mazda Automatic Transaxle JA5A-EL. Manual - part 24

K1–1

K1

K1

OVERHAUL

AUTOMATIC TRANSAXLE..................................K1-2

AUTOMATIC TRANSAXLE CLEANING ............K1-2

AUTOMATIC TRANSAXLE

DISASSEMBLY...............................................K1-2

TORQUE CONVERTER INSPECTION ...........K1-14

OIL PUMP DISASSEMBLY..............................K1-14

OIL PUMP INSPECTION .................................K1-16

OIL PUMP ASSEMBLY....................................K1-16

REVERSE CLUTCH AND HIGH CLUTCH 

PREINSPECTION.........................................K1-17

REVERSE CLUTCH AND HIGH CLUTCH

DISASSEMBLY.............................................K1-19

REVERSE CLUTCH AND HIGH CLUTCH

INSPECTION ................................................K1-20

REVERSE CLUTCH AND HIGH CLUTCH

ASSEMBLY...................................................K1-21

LOW CLUTCH PREINSPECTION ...................K1-22

LOW CLUTCH DISASSEMBLY .......................K1-24

LOW CLUTCH INSPECTION ..........................K1-25

LOW CLUTCH ASSEMBLY.............................K1-25

DIRECT CLUTCH 

PREINSPECTION.........................................K1-26

DIRECT CLUTCH DISASSEMBLY..................K1-28

DIRECT CLUTCH INSPECTION .....................K1-29

DIRECT CLUTCH ASSEMBLY........................K1-30

2-4 BRAKE, LOW AND REVERSE BRAKE

PREINSPECTION.........................................K1-32

2-4 BRAKE, LOW AND REVERSE BRAKE

DISASSEMBLY.............................................K1-33

2-4 BRAKE, LOW AND REVERSE BRAKE

INSPECTION ................................................K1-34

2-4 BRAKE, LOW AND REVERSE BRAKE

ASSEMBLY...................................................K1-35

PARKING MECHANISM DISASSEMBLY/

ASSEMBLY...................................................K1-38

CONTROL VALVE BODY DISASSEMBLY/

ASSEMBLY...................................................K1-39

OUTPUT GEAR BEARING 

PRELOAD.....................................................K1-40

REDUCTION GEAR BEARING 

PRELOAD.....................................................K1-41

AUTOMATIC TRANSAXLE

ASSEMBLY...................................................K1-41

K1–2

AUTOMATIC TRANSAXLE 

AUTOMATIC TRANSAXLE CLEANING

AME571401030A01

Cleaning Notes

1. Clean the transaxle exterior thoroughly with steam, cleaning solvents, or both, before disassembly.

Warning

•••• Using compressed air can cause dirt and other particles to fly out, causing injury to the eyes. 

Wear protective eye wear whenever using compressed air.

2. Clean the removed parts with cleaning solvent, and dry with compressed air. Clean out all holes and passages 

with compressed air, and verify that there are no obstructions.

End Of Sie

AUTOMATIC TRANSAXLE DISASSEMBLY

AME571401030A02

Precaution

General notes

1. Disassemble the transaxle in a clean area (dust-proof work space) to prevent entry of dust into the 

mechanisms.

2. Inspect the individual transaxle components in accordance with the QUICK DIAGNOSIS CHART during 

disassembly.

3. Use only plastic hammers when applying force to separate the light alloy case joints.

4. Never use rags during disassembly; they may leave particles that can clog fluid passage.

5. Because several parts resemble one another, arrange them so that they do not get mixed up.

6. Disassemble the control valve component and thoroughly clean it when the clutch or brake band has burned or 

when the ATF has degenerated.

Warning

•••• Although the stand has a self-locking brake system, there is a possibility that the brake may not 

hold when the transaxle is held in a lopsided position on the stand. This would cause the transaxle 

to turn suddenly, causing serious injury. Never keep the transaxle tilted to one side. Always hold 

the rotating handle firmly when turning the transaxle.

Disassembly

Components

.

AUTOMATIC TRANSAXLE

AMJ5614A069

1

Torque converter

2

Transaxle range switch

3

Oil filler tube

4

Air breezer

5

Drain plug

6

Oil seal

AUTOMATIC TRANSAXLE 

K1–3

K1

.

7

Control valve body cover

8

Control valve body

9

Terminal component

10

Differential oil seal

AMU0517A002

1

Oil pump

2

Oil strainer

3

Input shaft

4

Differential gear

5

Reduction gear

6

Reduction brake band

7

Sun gear

8

Direct clutch

9

One-way clutch inner race

10

Parking mechanism

11

Band servo

12

End cover

13

Return spring

14

Reverse clutch and high clutch component

15

High clutch hub

16

Reverse clutch hub

17

Front planetary carrier

18

Rear planetary carrier

19

Internal gear

20

Low clutch

21

2-4 brake

22

Low and reverse brake

23

Manual shaft

24

Parking component

K1–4

AUTOMATIC TRANSAXLE 

Disassembly procedure

1. Remove the torque converter, and immediately turn it so that the hole faces upward. This will help to keep any 

remaining fluid from spilling.

2. Remove the transaxle range switch.

3. Set the transaxle to a transmission stand using 

the SST.

Caution

•••• Be careful not to scratch the mating 

surfaces of the control valve body cover 

and the transaxle case.

•••• After removing the control valve body 

cover, remove the liquid gasket 

remaining on the mating surfaces.

4. Remove the control valve body cover.

5. Disconnect coupling connector between the 

solenoid valves and the terminal component.

6. Remove the bolts which secure the control valve 

body to the transaxle case as shown in the figure.

Note

• When removing control valve body, be 

careful not to drop the manual valve.

7. Remove the control valve body from the transaxle 

case.

Caution

•••• If the seal ring has dropped or is 

scratched, do not reuse it.

AMU0517A164

AMU0517A005

AMU0517A006

AMU0517A007