Suzuki AN400 Service Manual page 380

4D-5 Parking Brake:
Over-adjust Prevention Mechanism
When rapid braking "A", the automatic brake-lock adjuster operation works too fast "B".
The caliper piston/adjust nut is forced to stop "C" as soon as the brake pad contacts with brake disk, but the adjust bolt
turns by inertia force "D" after that. The adjust bolt stops after the adjust-bolt/nut clearance becomes zero. On this
account, the caliper piston/adjust nut can not return back "E" using the elasticity transform of piston seal when
releasing the brake lever. It is the over-adjust condition.
"E"
1. Caliper piston
2. Piston seal
3. Hydraulic pressure
4. Adjust nut
5. Adjust bolt
1
2
3
"C"
"D"
"A": Rapid braking
"B": Rapid rotation
"C": Sudden stop
"D": Turn by inertia
"E": Impossible to return
4
"A"
"B"
5
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