Reverse And High Clutch Drum Assembly

1. Install new seal rings to the high clutch piston.
   Fig 1: Installing Seal Rings To High Clutch Piston

   Courtesy of MAZDA MOTORS CORP.
2. Install new seal rings to the reverse clutch piston.
   Fig 2: Installing Seal Rings To Reverse Clutch Piston

   Courtesy of MAZDA MOTORS CORP.
3. Install the reverse clutch piston and the high clutch piston.
   Fig 3: Installing Reverse Clutch Piston And High Clutch Piston

   Courtesy of MAZDA MOTORS CORP.
4. Install the return spring.
   CAUTION:

   • If the high clutch cover is not centered, the seal rubber around the circumference of the cover will hit against the return spring and become damaged. Be sure to center the high clutch cover on the return spring.
   Fig 4: Installing Return Spring

   Courtesy of MAZDA MOTORS CORP.
5. Install the high clutch cover.
   Fig 5: Installing High Clutch Cover

   Courtesy of MAZDA MOTORS CORP.
6. Install the SSTs  as shown in the figure.
   CAUTION:

   • Do not compress the high clutch cover excessively. Doing so can damage the return spring.
   Fig 6: Installing SST To High Clutch Cover

   Courtesy of MAZDA MOTORS CORP.
7. Compress the high clutch cover using the SST. 
   Fig 7: Compressing High Clutch Cover Using SST

   Courtesy of MAZDA MOTORS CORP.
8. Install a new snap ring.
9. Remove the SSTs. 
10. Apply ATF to the plates of the high clutch.
    CAUTION:

    • If the dished plate is not installed in the specified direction, it may be damaged or not operate properly. Install the plate exactly as shown in the figure.
11. Install the plates and the snap ring to the reverse and high clutch drum in the following order:

    Dished-Driven-Drive-Driven-Drive-Driven- Drive-Driven-Drive-Driven-Drive-Driven- Drive-Retaining 

    Fig 8: Installing Plates And Snap Ring To Reverse And High Clutch Drum

    Courtesy of MAZDA MOTORS CORP.
12. Apply ATF to the plates of the reverse clutch.
    CAUTION:

    • If the dished plate is not installed in the specified direction, it may be damaged or not operate properly. Install the plate exactly as shown in the figure.
13. Install the plates and the snap ring to the reverse and high clutch drum in the following order:

    Dished-Driven-Drive-Driven-Drive- Retaining 

    Fig 9: Installing Plates And Snap Ring To Reverse And High Clutch Drum

    Courtesy of MAZDA MOTORS CORP.
14. Install the reverse and high clutch drum to the oil pump.
    CAUTION:

    • Applying compressed air to the assembled clutch pack for more than 3 s at a time will damage the seal.
    • Do not apply compressed air for more than the aforementioned time when testing the system.
15. Apply compressed air to the part indicated in the figure and inspect the reverse clutch operation.
    • If there is any malfunction, inspect the seal rings.

    Air pressure 

    390 kPa {4.0 kgf/cm ²  , 57 psi} max. 

    Fig 10: Identifying Reverse Clutch Fluid Passage

    Courtesy of MAZDA MOTORS CORP.
16. Measure the clearance between the retaining plate and the snap ring.
    • If the clearance is not within the specification, adjust the clearance by installing the correct retaining plate.
    Fig 11: Measuring Clearance Between Retaining Plate And Snap Ring

    Courtesy of MAZDA MOTORS CORP.

    Specification 

    0.6-0.9 mm {0.0237-0.0354 in} 

    Retaining Plate Sizes 

    mm {in}
    4.8 {0.191}	5.0 {0.197}
    5.2 {0.205}	5.4 {0.213}

    CAUTION:

    • Applying compressed air to the assembled clutch pack for more than 3 s at a time will damage the seal.
    • Do not apply compressed air for more than the aforementioned time when testing the system.
17. Apply compressed air to the part indicated in the figure and inspect the high clutch operation.
    • If there is any malfunction, inspect the seal rings.

    Air pressure 

    390 kPa {4.0 kgf/cm ²  , 57 psi} max. 

    Fig 12: Identifying High Clutch Fluid Passage

    Courtesy of MAZDA MOTORS CORP.
18. Measure the clearance between the retaining plate and the snap ring.
    • If the clearance is not within the specification, adjust the clearance by installing the correct retaining plate.
    Fig 13: Measuring Clearance Between Retaining Plate And Snap Ring

    Courtesy of MAZDA MOTORS CORP.

    Specification 

    1.2-1.4 mm {0.0473-0.0551 in} 

Retaining Plate Sizes