Mazda Automatic Transaxle JA5A-EL. Manual - part 32

AUTOMATIC TRANSAXLE 

K1–33

K1

2-4 BRAKE, LOW AND REVERSE BRAKE DISASSEMBLY

AME571419091A02

1. Disassemble in the order indicated in the table.

.

AMU0517A085

1

Snap ring

2

Driven plate

3

Drive plate

4

Retaining plates

5

Snap ring

(See 

K1–34 Snap Ring Disassembly Note

.)

6

Piston and retainer

7

Return spring

8

Spring retainer

9

Dished plate

10

Retaining plate

11

Driven plate

12

Drive plate

13

Retaining plate

14

Snap ring

15

One-way clutch

16

2-4 brake piston

(See 

K1–34 2-4 Brake Piston Disassembly Note

.)

K1–34

AUTOMATIC TRANSAXLE 

Snap Ring Disassembly Note

Caution

•••• Depress the spring retainer only enough to remove the snap ring. Overpressing will damage the 

retainer assembly edges.

1. Install the SSTs in the transaxle case as shown in 

the figure.

2. Remove the snap ring.

3. Remove the SSTs.

2-4 Brake Piston Disassembly Note

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.

1. Using an air gun, blow air into circuit to blow out 

the 2-4 brake piston as shown in the figure.

2. Remove the seal ring and O-ring from the 2-4 

brake piston.

End Of Sie

2-4 BRAKE, LOW AND REVERSE BRAKE INSPECTION

AME571419091A03

Drive Plate Inspection

1. Measure the facing thickness in three places, and determine the average of the three readings.

• If not within the specification, replace the drive plates.

Thickness

Minimum: 1.7 mm {0.067 in}

Spring and Retainer Inspection

1. Measure the free length of each spring and inspect for deformation.

• If not within the specifications, replace the spring and retainer.

AMU0517A167

AMU0517A086

AUTOMATIC TRANSAXLE 

K1–35

K1

Specification

2-4 brake return spring

Low and reverse return spring

End Of Sie

2-4 BRAKE, LOW AND REVERSE BRAKE ASSEMBLY

AME571419091A04

Assembly Procedure

1. Apply a coat of ATF to a new seal ring and new 

O-ring, then install them to the 2-4 brake piston.

Note

• After installing the piston, ensure that piston 

rotates smoothly by hand. If not, the lip seal 

may be caught.

Low and reverse brake

1. Measure the snap ring groove width A.

2. Measure the snap ring thickness B.

3. Calculate the clearance using the following 

formula.

Clearance = A – B

0.0 — 0.2 mm {0.000 — 0.008 in}

4. If the clearance is out of specification, select a 

suitable snap ring.

Selectable snap ring thickness

mm {in}

Note

• The low one-way clutch must be installed with the groove facing upward.

5. Install the low one-way clutch.

Note

• The snap ring opening must be positioned 

as shown in the figure.

Outer 

diameter 

(mm {in})

Free length 

(mm {in})

No. of 

coils

Wire diameter

 (mm {in})

8 {0.31}

21.4 {0.84} 

6.6

1.0 {0.039}

Outer 

diameter 

(mm {in})

Free length 

(mm {in})

No. of 

coils

Wire thickness x 

wire width 

(mm {in})

178.9 {7.04}

 20.3 {0.79} 

4

 1.3 x 5.2

{0.05 x 0.20}

AMU0517A087

2.1 {0.083}

2.2 {0.087}

2.3 {0.091}

AMU0517A088

AMU0517A089

K1–36

AUTOMATIC TRANSAXLE 

6. Install the snap ring.

7. Install the retaining plates, drive plates, driven 

plates, dished plate, and spring retainer.

8. Install the return spring.

Note

• When installing the piston and retainer, align 

the oil holes as shown in the figure.

9. Install the piston and retainer.

Caution

•••• Depress the spring retainer only enough 

to remove the snap ring. Overpressing 

will damage the retainer assembly edges.

10. Install the SSTs in the transaxle case as shown in 

the figure.

Note

• The snap ring opening must be positioned 

as shown in the figure.

11. Install the snap ring.

Note

• The snap ring opening must be positioned 

as shown in the figure.

AMU0517A044

AMU0517A090

AMU0517A167

AMU0517A091