5-S11
L3130 · L3430 · L3830 · L4630 · L5030, WSM
BRAKES
(2) Servicing
Brake Cam Lever Movement
1. Assemble the brake cam (1) and brake cam lever (2).
2. Move the brake cam lever by hand to check the movement.
3. If the movement is heavy, refine the brake cam lever or brake
case with sandpaper.
W10144750
Cam Plate Flatness
1. Place the cam plate on the surface plate.
2. Measure the flatness of cam plate with a feeler gauge at four
points on a diagonal line.
3. If the measurement exceed the allowable limit, replace it.
W10145650
Height of Cam Plate and Ball
1. Measure the dimension of the cam plate with the ball installed.
2. If the measurement is less than the allowable limit, replace the
cam plate and balls.
3. Inspect the ball holes of cam plate for uneven wear. If the uneven
wear is found, replace it.
W10147220
Brake Disc Wear
1. Measure the brake disc thickness with vernier calipers.
2. If the measurement is less than the allowable limit, replace it.
W10148530
Plate Wear
1. Measure the plate thickness with vernier calipers.
2. If the measurement is less than the allowable limit, replace it.
W10149690
(1) Brake Cam (2) Brake Cam Lever
Cam Plate Flatness Allowable limit
0.3 mm
0.012 in.
Height of cam plate and
ball
Factory spec.
20.9 to 21.1 mm
0.823 to 0.831 in.
Allowable limit
20.5 mm
0.807 in.
Brake disc thickness
Factory spec.
4.6 to 4.8 mm
0.181 to 0.189 in.
Allowable limit
4.2 mm
0.165 in.
Plate thickness
Factory spec.
2.54 to 2.66 mm
0.1000 to 0.1047 in.
Allowable limit
2.1 mm
0.083 in.
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