Kickback; Pcv Function; Before The Turning Point - Honda Prelude 1993 Service Manual

Anti-lock Brake System (ABSI
Features/Gonstruction/Operation (cont'dl
3.
Kickback
When the anti-lock brake system is functioning. the piston moves upward. the volume of chamber B increases, and
the fluid pressure on the caliper side is reduced. At the same time. the volume of chamber A is reduced and the brake
fluid is returned to the master cylinder. When the brake tluid is pushed back to the master cylinder, the driver can feel
the functioning of the anti-lock brake system because the brake pedal is kicked back.
4.
PCV {Proportioning Control Valve) Function
ln the modulator fo. the rear wheels. the diameters of the piston and the slide piston are distinctly difterent. This pro-
vides a PCV (Proportioning Control Valve) function to prevent the rear wheels from locking during an emergency
stop.
{ 1 ) B e f o r e t h e T u r n i n g P o i n t :
1)When the fluid pressure lrom the master cylinder is below the turning point. the cut off valve is always
pushed downward by the force of the slide piston and its spring,
Under these conditjons, there is a gap between the cut-off valve shoulder and the sleeve. Chamber A and
chamber B are theretore connected through the gap. The pressure from the master cylinder flows into the
rear calipers through chamber A and chamber B.
MASTER
CHAMBER C
19-4tr;