Yamaha YXR660FAS Service Manual Page 20

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GEN
INFO
FEATURES
Parking Brake Operation
1 Parking brake arm
2 Parking brake arm shaft
3 Set bolt
4 Adjusting bolt sleeve
5 Brake caliper piston
6 Brake pad
When the parking brake is operated, the parking brake cable turns the parking brake arm
1
. The
rotation of the parking brake arm is changed to axial thrust in the parking brake arm shaft
2
and the
set bolt
3
is pushed against the adjusting bolt sleeve
4
.
When the adjusting bolt sleeve receives the force, the dark shaded area in the above illustration is
pushed together and the brake pad
6
is pushed against the brake disc.
When the brake pad wears, the clearance between the brake caliper piston
5
and the brake pad
becomes larger and the force applied to the brake pad becomes weaker.
If this occurs, the self-adjusting parking brake mechanism adjusts automatically to achieve the
proper clearance.
1
2
3
56
4
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