Subaru SVX 1992 Manual page 841

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2. OPERATION IN CASE OF CIRCUIT FAILURE

(Failure of primary circuit)

1) If the primary circuit becomes inoperative, the sec-

ondary inner piston moves toward the primary circuit

and compresses the balance spring until the stop plate

is in contact with the circlip .

Inner piston

Balance spring

(inoperative)

2) As the master cylinder fluid pressure increases, it

overcomes spring tension . This causes the secondary

valve piston and inner piston to move toward the

primary circuit as a unit. The valve is held open since it

is pulled by the inner piston connector . For this reason,

the fluid pressure in the secondary circuit of the rear

wheel cylinder is not controlled as it decreases .

Valve piston

(inoperative)

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