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4D-3 Parking Brake:
Automatic Parking Brake Adjuster System (Automatic Brake-lock Adjuster System)
The automatic brake-lock adjuster system is equipped on the brake-lock. If the brake pad worn, the adjust-bolt/nut
adjust the position of caliper piston so as to keep the certain clearance between brake pad and brake disk.
Operation (Normal Condition → Braking)
The hydraulic pressure by brake lever operation acts on the adjust-nut/caliper piston. The adjust-bolt threads and
adjust-nut threads have a clearance. The piston stroke when braking is shorter than clearance, thus, the braking
operation will finish without automatic brake-lock adjuster system operation.
1. Adjust nut
2. Adjust bolt
1
"A"
"B"
3. Hydraulic pressure
"A": Caliper piston stroke
2
3
"B": Clearance
I705H1440012-03
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