2-4 BRAKE INSPECTION

Return Spring Inspection

1. Measure the spring specification.

• If not as specified, replace the return spring.

Specification

Outer diameter (mm {in})	Free length (mm {in})	No. of coils	Wire diameter (mm {in})
6.9 {0.272}	22.5 {0.886}	10.0	0.9 {0.035}

Drive Plate Inspection

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

• If it is less than the minimum specification, replace the drive plate.

Standard

2.0 mm {0.079 in}

Minimum

1.8 mm {0.071 in}