Reverse Brake Assembly: Assembly

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

Fig 1: Applying CVTF With Reverse Brake Piston Seal
Courtesy of SUBARU OF AMERICA, INC.
Install the return spring.

Fig 2: Identifying Reverse Brake Assembly Return Spring
Courtesy of SUBARU OF AMERICA, INC.
Set the spring retainer and snap ring.

Fig 3: Identifying Reverse Brake Assembly Snap Ring And Spring Retainer
Courtesy of SUBARU OF AMERICA, INC.
Set the ST1, ST2 and ST3 to intermediate case.
ST1 18762AA000 or 18762AA001 COMPRESSOR SPECIAL TOOL

ST2 18763AA000 COMPRESSOR SHAFT

ST3 18765AA000 COMPRESSOR SUPPORT

Fig 4: Installing Special Tools Onto Intermediate Case
Courtesy of SUBARU OF AMERICA, INC.
Compress the return spring using the ST attached, and install the snap ring.

Fig 5: Compressing Reverse Brake Assembly Return Spring Using 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: Locating Reverse Brake Assembly Intermediate Case Hole
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: Checking Retaining Plate Scale Using Dial Gauge
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 Retaining Plate Center Using Push/Pull Gauge
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: Checking Retaining Plate And Snap Ring Clearance
Courtesy of SUBARU OF AMERICA, INC.
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)