Caravan AWD V6-201 3.3L (1991)
Brake Master Cylinder: Description and Operation
Without Antilock Brakes
Aluminum Master Cylinder
CAUTION: Do not hone the bore of the cylinder as this will remove the anodized surface.
OPERATION
The brake system is a diagonally split system.
This system operates on the same principles as conventional front and rear split systems using primary and secondary master cylinders moving
simultaneously to exert hydraulic pressure on their respective systems.
The hydraulic brake lines on this system, however, have been diagonally split front to rear (left front to right rear and right front to left rear) in
place of separate lines to the front and rear wheels.
System Failure
In the event of a system failure this would cause the remaining good system to do all the braking on one front wheel and the opposite rear wheel,
thus maintaining 50% of the total braking force.
The hydraulic pressure loss would result in a pressure differential in the system and cause a warning light on the dashboard to glow as in front and
rear split systems.
CONSTRUCTION
The tandem master cylinder has a glass reinforced nylon reservoir and an anodized aluminum body.
The secondary outlet tube from the master cylinder is connected to the valve mounted under the master cylinder.
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The front part of this block supplies the right rear and left front brakes.
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The rear portion of the block connects to the primary outlet tube and supplies the right front and left rear brakes.
The reservoir is indexed to prevent installation in the wrong direction.
The cap diaphragms are slit to allow pressure to equalize.
