3-4 CLUTCH INSPECTION

Drive Plate Inspection

1. Measure the facing thickness in three places, and calculate the average value.

• If not within the specification, replace the drive plates.

Thickness

Standard: 1.6 mm {0.063 in}

Minimum: 1.5 mm {0.059 in}

Return Spring Inspection

1. Measure the spring free length.

• If not within the specifications, replace the spring.

Specification

Outer diameter (mm {in})	Free length (mm {in})	No. of coils	Wire diameter (mm {in})
83.3 {3.28}	38.7 {1.52}	1.0	5.5 {0.22}

3-4 Clutch Piston Inspection

Warning

• Using compressed air can cause dirt and other particles to fly out, causing injury to the eyes. Wear protective eye wear whenever using compressed air.

1. Verify that there is no air leakage when applying compressed air through the oil hole opposite the return spring.

2. Verify that there is air flow when applying compressed air through the oil hole on the return spring side.

• Replace the 3-4 clutch piston if it is damaged or malfunctioning.

Air pressure

390 kPa {4.0 kgf/cm², 57 psi} max.