Clutch clearance

1. Measure the forward clutch clearance.
   1. Install the forward clutch in the oil pump, and set the dial gauge.
   2. Secure the forward clutch by lightly pressing down with a press, etc.
      Fig 1: Measuring Forward Clutch Clearance

      Courtesy of MAZDA MOTORS CORP.
   3. Apply compressed air to the part indicated in the figure and let the forward clutch piston stroke three times.

      Air pressure 

      392-441 kPa {4.0-4.5 kgf/cm ²  , 57-63 psi} 

   4. Apply compressed air and operate the forward clutch piston. Read the value when the indicator of the dial gauge stops.
   5. Release the compressed air and read the dial gauge when the forward clutch piston is not operating.
      Fig 2: Identifying Forward Clutch Fluid Passage

      Courtesy of MAZDA MOTORS CORP.
   6. Calculate the forward clutch clearance according to the following formula:

      Step (4) value - Step (5) value = Forward clutch clearance.

   7. Measure the clearances at four locations (90° apart) by following the steps from (3) to (6). Verify that the average value is within the specification below.

      Forward clutch clearance 

      1.50-1.80 mm {0.059-0.071 in} 

2. If not as specified, replace parts as necessary. (See FORWARD CLUTCH DISASSEMBLY/ASSEMBLY .)
   Fig 3: Measuring Clearances Between Snap Ring And Retaining Plate

   Courtesy of MAZDA MOTORS CORP.

Measure the direct clutch clearance.

1. Install the direct clutch in the transaxle case, and set the dial gauge.
2. Secure the direct clutch by lightly pressing down with a press or similar tool.
   Fig 1: Measuring Direct Clutch Clearance

   Courtesy of MAZDA MOTORS CORP.
3. Apply compressed air to the part indicated in the figure and let the direct clutch piston stroke three times.

   Air pressure 

   392-441 kPa {4.0-4.5 kgf/cm ²  , 57-63 psi} 

   Fig 2: Applying Compressed Air To Direct Clutch Fluid Passage

   Courtesy of MAZDA MOTORS CORP.
4. Apply compressed air and operate the direct clutch piston. Read the value when the indicator of the dial gauge stops.
5. Release the compressed air and read the dial gauge when the direct clutch piston is not operating.
6. Calculate the direct clutch clearance according to the following formula: step (4) value - step (5) value = direct clutch clearance.
7. Measure the clearances at four locations (90° apart) by following the steps from (3) to (6). Verify that the average value is within the specification below.

   Direct clutch clearance 

   Standard: 1.10-1.40 mm {0.043-0.055 in} 

8. If not as specified, replace parts as necessary. (See DIRECT CLUTCH DISASSEMBLY/ASSEMBLY .)
   Fig 3: Measuring Direct Clutch Clearance

   Courtesy of MAZDA MOTORS CORP.