Sable V6-183 3.0L DOHC VIN S MFI (1997)
Load Compensator: Description and Operation
PURPOSE
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The brake pressure control valve is a height sensing variable-type that regulates the hydraulic pressure in the rear brake system depending on the
vehicle load and ride height.
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The pressure level is limited at the rear brakes to minimize rear wheel lockup during hard braking.
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It is located between the body and LH rear suspension quadra-link, (vehicles with or without Anti-lock brakes).
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The brake load sensor proportioning valve is mounted to the rear floor pan (11215) near the left rear wheel.
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The valve is the same on all sedans.
OPERATION
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When the brake pedal is applied, the rear brake fluid pressure passes through the control valve to the rear brake system until the valve's
pre-determined maximum pressure point is reached.
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The control valve maintains the pre-determined maximum hydraulic pressure to the rear brakes, creating a balanced braking condition between the
front and rear wheels to minimize rear wheel skidding during hard braking.
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The height sensing feature of the sedan's brake load sensor proportioning valve increases the maximum pressure to the rear brakes as the lever is
moved toward the valve.
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A mechanical linkage to the rear suspension arm and bushing is used to vary valve pressure split-point based on the rear weight of the vehicle.
NOTE: A junction block is located on the body side member under the brake booster on sedans without anti-lock brakes.
