Reverse Brake Assembly: Assembly

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

Apply CVTF to the seal of reverse brake piston and install it to intermediate case.

Fig 1: Installing Intermediate Case
Courtesy of SUBARU OF AMERICA, INC.
Install the return spring.

Fig 2: Removing Return Spring
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Set the spring retainer and snap ring.

Fig 3: Setting Spring Retainer And Snap Ring
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Set the ST1, ST2 and ST3 to intermediate case.
ST1 18762AA001 COMPRESSOR SPECIAL TOOL

ST2 18763AA000 COMPRESSOR SHAFT

ST3 18765AA000 COMPRESSOR SUPPORT

Fig 4: Setting ST1, ST2 And ST3 To Intermediate Case
Courtesy of SUBARU OF AMERICA, INC.
Compress the return spring using the ST attached, and install the snap ring.

Fig 5: Compressing Return Spring Using Set ST
Courtesy of SUBARU OF AMERICA, INC.
Check the operation of reverse brake piston by blowing compressed air intermittently from intermediate case hole.

Fig 6: Removing Reverse Brake Piston
Courtesy of SUBARU OF AMERICA, INC.
Place the dish plate, driven plate, drive plate and retaining plate neatly in this order on surface table.
Set the dial gauge to retaining plate, and read its scale.
NOTE: The value, which is read in the gauge at this time, is zero point.
Scale and record the weight "Z" of a flat board which will be put on retaining plate.
NOTE:
- Use a stiff board which does not bend against load as a flat board to be put on retaining plate.
- Use a flat board weighing less than 84 N (8.6 kgf, 18.9 lb).
Put the flat board on retaining plate.

Fig 7: Putting Flat Board On Retaining Plate
Courtesy of SUBARU OF AMERICA, INC.
Using the following formula, read the push/pull gauge and calculate "N".
N = 84 N (8.6 kgf, 18.9 lb) - Z

84 N (8.6 kgf, 18.9 lb): Load applied to clutch plate

Z: Flat board weight
Press the center of retaining plate by applying a force of "N" or more using push/pull gauge, and then measure and record the compression amount "A".
NOTE: Measure at four points with a 90° interval and calculate the average.

Fig 8: Pressing Center Of Retaining Plate
Courtesy of SUBARU OF AMERICA, INC.
Install the dish plate, drive plate, driven plate, retaining plate and snap ring to intermediate case.
NOTE: Install the dish plate in the correct direction.
Measure and record the clearance "B" between the retaining plate and snap ring.

Fig 9: Measuring Clearance Between Retaining Plate And Snap Ring
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Piston stroke calculation

Calculate with A and B dimensions recorded before. If it exceeds the limit, replace with a new drive plate and adjust within the initial standard value.

S mm (in) = A + B

S: Piston stroke

A: Compression amount of drive plate and dish plate

B: Clearance between retaining plate and snap ring

Initial standard:

2.88 - 3.18 mm (0.113 - 0.125 in)

Limit thickness:

3.38 mm (0.133 in)

Retaining plate
Part No.	Thickness mm (in)
31567AB680	5.6 (0.220)
31567AB690	5.8 (0.228)
31567AB700	6.0 (0.236)
31579AB710	6.2 (0.244)