Yamaha FZ1-N 2007 Service Manual page 29

Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys
9. Port B
10.Orifice
11.Port D
12.Solenoid valve
13.Port C
14.Brake caliper
15.ABS ECU
16.ABS warning light
17.Brake fluid pressure
18.Time
19.Repressurizing
2. Pressurized state
Port D "11" is closed by the "pressurization" signal transmitted from the ABS ECU. Before this
occurs, the spool of the flow control valve has compressed the return spring and closed port B
"9".
Brake fluid that has entered through port A "7" is further restricted by the orifice "10" and the
brake fluid is sent to the brake calipers via port A "7" and port C "13". At this time, the brake is
pressurized at a constant speed regardless of the brake fluid pressure level since restriction of
port A "7" changes so that a constant pressure difference is maintained between chamber A
"20"and chamber B "21" of the flow control valve.
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