wsm M8540NARROW - Servicing; Travelling Brake

BRAKES
M8540Narrow, M9540Narrow, WSM
N5-S9
Brake Cam and Brake Cam Lever
1. Remove the external circlip (1).
2. Remove the brake cam (2) and brake cam lever (3).
(When reassembling)
• Apply grease to the O-ring (4) and take care not to damage the
O-ring.
IMPORTANT
• Install the brake cam (2) to brake cam lever, aligning the
marks on them.
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[3] SERVICING
(1) Travelling Brake
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 exceeds the allowable limit, replace it.
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Height of Cam Plate and Ball
1. Measure the dimensions 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.
9Y1210236BRS0018US0
Brake Disc Wear
1. Measure the brake disc thickness with vernier calipers.
2. If the measurement is less than the allowable limit, replace it.
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(1) External Circlip
(2) Brake Cam
(3) Brake Cam Lever
(4) O-ring
(5) Alignment Mark
Cam plate flatness Allowable limit
0.3 mm
0.012 in.
Height of cam plate and
ball
Factory specification
25.45 to 25.55 mm
1.002 to 1.0059 in.
Allowable limit
25.00 mm
0.9843 in.
Brake disc thickness
Factory specification
4.15 to 4.35 mm
0.1634 to 0.1713 in.
Allowable limit
3.3 mm
0.130 in.
KiSC issued 07, 2013 A