Lotus 2004 Eleven Service Notes page 262

Lotus Service Notes
Initial Movement
Initial movement of the brake pedal causes the input rod to move to the right, and allows the control valve
under the action of its spring, to close off the vacuum port in the driving piston. The atmospheric port remains
closed.
Brake pedal
input
Driving piston
Atomospheric
port closed
Section JJ
Vacuum port
closed off
147b
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