Reverse Brake Assembly: Assembly

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

Fig 1: Identifying Reverse Brake Piston
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Install the return spring.

Fig 2: Identifying Return Spring
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Install the spring retainer.

Fig 3: Identifying Spring Retainer
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Set the ST1, ST2 and ST3 to intermediate case.
ST1 18762AA000 COMPRESSOR SPECIAL TOOL

ST2 18763AA000 COMPRESSOR SHAFT

ST3 18765AA000 COMPRESSOR SUPPORT

Fig 4: Identifying Compressor Special Tool, Compressor Shaft And Compressor Support With Intermediate Case
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Compress the return spring using the set ST to install the snap ring.

Fig 5: Identifying Return Spring With ST
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Check the operation of reverse brake piston by blowing compressed air intermittently from intermediate case hole.

Fig 6: Locating Intermediate Case Hole
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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: Identifying Dial Gauge On Surface Table
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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: Identifying Drive Plate, Driven Plate, Retaining Plate And Dish Plate
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Install the dish plate, drive plate, driven plate and retaining plate 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 for use, 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 number	Thickness mm (in)
31567AB680	5.6 (0.220)
31567AB690	5.8 (0.228)
31567AB700	6.0 (0.236)
31579AB710	6.2 (0.244)