subaru Workshop Repair Guides

Subaru Workshop Service and Repair Manuals

Brake Proportioning/Combination Valve|Service and Repair > < Without ABS|Page 4391
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Operation in Case of Circuit Failure 

If either primary or secondary circuit fails to operate, spring force "F" is supported by one of pistons (1). At this point, fluid pressure "P2", which
initially reaches the split point, is greater than that produced under normal conditions.

Brake Proportioning/Combination Valve|Service and Repair > < Without ABS|Page 4391