New Yorker V6-181 2972cc 3.0L SOHC VIN 3 FI (1989)
Brake Proportioning/Combination Valve: Description and Operation
Proportioning Valve
Hydraulic Assembly
In place of the conventional differential pressure/proportioning valve, the ABS system utilizes screw-in proportioning valves. Each rear brake circuit has
its own screw-in proportioning valve which is attached to the rear brake outlet ports of the hydraulic assembly. These valves limit rear brake pressure to
the rear brakes after a certain brake pressure is reached, thus improving front to rear brake balance during normal braking. The Proportioning Valves
are serviced separately.