2. Slide Piston Function
When the car is used on rough roads where the tires sometimes lose adhesion, the antilock brake system may func-
tion excessively, causing a very large volume of brake fluid to flow into chamber C. When this occurs, the piston is
moved excessively, resulting in an abnormal loss of pressure in chamber B. In order to overcome this problem. the
slide piston is kept in proper position by spring force to prevent the pressure in chamber B from becoming negative.
CHAMBER C
( c o n t ' d l
19-43