Magnum V6-3.5L VIN V (2006)
Hydraulic System Junction Block: Description and Operation
JUNCTION BLOCK
DESCRIPTION
A junction block is used on vehicles that are not equipped with antilock brakes (ABS) allowing use of the same brake tubes on all applications. The
junction block is located in the engine compartment, in front of the right wheel well. The junction block mounts in the same location as the ABS
integrated control unit (ICU) does on vehicles with ABS.
It has six threaded ports to which the brake tubes connect. Two are for the brake tubes coming from the master cylinder. The remaining four ports are
for the brake tubes going to each wheel brake assembly
The junction block contains two proportioning valves. The proportioning valves are not serviced separately from the junction block.
OPERATION
The junction block distributes the brake fluid coming from the master cylinder primary and secondary ports to the four brake tubes leading to the
wheel brakes. Since the junction block mounts in the same location as the ABS integrated control unit (ICU), it allows for the common use of brake
tubes on the vehicle whether it is equipped with or without ABS.
The junction block includes rear brake proportioning valves. Placed in the fluid flow passages leading to the rear brake tube ports, they balance
front-to-rear braking.
