XL-7 4WD V6-2.7L (2003)
Brake Master Cylinder: Description and Operation
Master Cylinder Assembly Construction
The master cylinder has two pistons and three piston cups (1). Its hydraulic pressure is produced in the primary ("a" in the figure) and secondary ("b")
chambers. The hydraulic pressure produced in the primary chamber ("a") acts on the rear (for vehicle without ABS, rear) wheel brakes.
Also, the hydraulic pressure produced in the secondary chamber ("b") acts on the front (for vehicle without ABS, front) wheel brakes.
WARNING: Brake master cylinder cannot be disassembled. When anything faulty is found in it, it must be replaced as an assembly.
CAUTION: Brake master cylinder cannot be disassembled in principle. Should primary piston (2) have come off from cylinder while dismounting or
handling it, wash it in the same specified fluid as that in reservoir and place it back in cylinder.
