Assembly Procedure

WARNING: This page is about a different variant/trim than selected.

Measure the facing thickness in three places, and determine the average of the three readings.
Low and reverse brake drive plate thickness

Standard: 1.60 mm {0.063 in}

Minimum: 1.45 mm {0.057 in}
- If not within the specification, replace the drive plates.
CAUTION:
- Installing the low and reverse brake piston may damage its seal. Carefully install the low and reverse brake piston by pushing evenly around the circumference.
Apply ATF to the circumference of the low and reverse brake piston seal, and install the piston to the transaxle case.
Install the piston return spring and one-way clutch to the transaxle case.

Fig 1: View Of Piston Return Spring, One-Way Clutch And Transaxle Case
Courtesy of MAZDA MOTORS CORP.
Install the SSTs as shown.
CAUTION:
- Depress the one-way clutch inner race only enough to install the snap ring. Overpressing will damage the one-way clutch inner race assembly edges.
Fig 2: Identifying SSTS
Courtesy of MAZDA MOTORS CORP.
Compress the one-way clutch inner race.
CAUTION:
- The transaxle body may be damaged if installed incorrectly. Make sure to install the transaxle body in such a way that the end of the snap ring does not enter the area shown in the figure.
Fig 3: Identifying Snap Ring Position
Courtesy of MAZDA MOTORS CORP.
Install the snap ring.
Remove the SSTs .
Install the dish plate.
Install the drive and driven plates in the following order.
Driven-Drive-Driven-Drive-Driven-Drive-

Driven-Drive-Driven-Drive
Install the retaining plate and the snap ring.

Fig 4: View Of Retaining Plate And Snap Ring
Courtesy of MAZDA MOTORS CORP.

Measure the low and reverse brake clearance.

Set the dial gauge to the low and reverse brake.
Set the measuring point of the dial gauge to the low and reverse brake piston.

Fig 5: Setting Measuring Point Of Dial Gauge To Low And Reverse Brake Piston
Courtesy of MAZDA MOTORS CORP.
Apply compressed air to the part indicated in the figure and let the low and reverse brake piston stroke three times.
Air pressure

98.1 kPa {1.0 kgf/cm ² , 14 psi}
Apply compressed air and operate the low and reverse brake piston. Read the value when the indicator of the dial gauge stops.
Release the compressed air and read the dial gauge when the low and reverse brake piston is not operating.
Calculate the low and reverse brake clearance according to the following formula:
Step (4) value-Step (5) value= low and reverse brake clearance.

Fig 6: Applying Compressed Air To Low And Reverse Brake Piston
Courtesy of MAZDA MOTORS CORP.
Measure the clearances at four locations (90° apart) by following the steps from (3) to (6). Verify that the average value is within the specification below.
Low and reverse brake clearance

2.20-2.50 mm {0.087-0.098 in}

Fig 7: Measuring Low And Reverse Brake Clearance
Courtesy of MAZDA MOTORS CORP.
- If not within the specification, remove the snap ring and measure its thickness.

Add the thickness to the average value calculated in step (7), and select the snap ring whose range includes the value.

Snap ring size for low and reverse brake clearance

SNAP RING SIZE FOR LOW AND REVERSE BRAKE CLEARANCE

Range mm {in}	Snap ring sizes mm {in}
4.050-4.250 {0.159-0.167}	1.8 {0.071}
4.250-4.450 {0.167-0.175}	2.0 {0.079}
4.450-4.650 {0.175-0.183}	2.2 {0.087}
4.650-4.850 {0.183-0.190}	2.4 {0.094}
4.850-5.050 {0.190-0.199}	2.6 {0.102}
5.050-5.250 {0.199-0.207}	2.8 {0.110}
5.250-5.450 {0.207-0.215}	3.0 {0.118}

Install the selected snap ring and perform steps (2) to (7) again. Verify that the calculated value satisfies the clearance specification.

Inspect the low and reverse brake operation by applying compressed air as shown.
Air pressure

98.1 kPa {1.0 kgf/cm ² , 14 psi}

Fig 8: Applying Compressed Air To Low And Reverse Brake Piston
Courtesy of MAZDA MOTORS CORP.