Rodeo S 4WD V6-3165cc 3.2L SOHC (6VD1) (1997)
Hydraulic Unit: Description and Operation
Hydraulic Assembly
Components
Hydraulic Unit
The hydraulic unit controls hydraulic pressure to the front calipers and rear wheel cylinders by modulating hydraulic pressure to prevent wheel lockup.
The basic hydraulic unit configuration consists of drive gear subassemblies, ball screws, nuts, pistons and hydraulic check valves. The motor pack
consists of three motors, three drive gears and three ESBs.
Expansion Spring Brake
Expansion Spring Brake (EBS) Components
FUNCTION
The expansion spring brake (ESB) is used to hold the piston in the upmost (or home) position. An ESB is a spring that is retained in a housing at a
close tolerance. One end of the spring is in contact with the motor drive dog and the other end is in contact with the pinion drive dog. In normal