2-4 Brake

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Install the clutch plates, drive and driven plates as shown.

Fig 1: Installing Clutch Plates, Drive & Driven Plates
Courtesy of MAZDA MOTORS CORP.

NOTE: When measuring the 2-4 brake clearance, do not install the retaining plate in the transaxle case.

Using the dial depth gauge and the SST, measure clearance between the retaining plate and the snap ring.
1. Position the SST on the surface of the transaxle case where it contacts the end cover.
2. Measure the height A between the SST surface and the driven plate.
  
  Fig 2: Measuring Clearance Between Retaining Plate & Snap Ring
  Courtesy of MAZDA MOTORS CORP.
3. Position the SST on the piston edge of the end cover.
4. Measure the height B between the SST surface and the contact surfaces of the end cover and transaxle case.
  
  Fig 3: Measuring Height Between SST surface & Contact Surfaces Of End Cover & Transaxle Case
  Courtesy of MAZDA MOTORS CORP.
5. Measure the retaining plate thickness C .
6. Calculate the clearance using the following formula.
Clearance = A - B - C

0.6 - 0.9 mm {0.02-0.04 in}
If clearance is out of specification, select a suitable retaining plate.

Fig 4: Available Retaining Plate Thicknesses
Courtesy of MAZDA MOTORS CORP.
Install the retaining plate snap ring.