Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1986CAPRICE WAGON V8-305 5.0LREPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLDESCRIPTION AND OPERATION
1986 Chevrolet Caprice Wagon V8-305 5.0L
Brakes and Traction Control: Description and Operation
1986 Chevrolet Caprice Wagon V8-305 5.0LSECTION Description and Operation
This system operates on the same principles as conventional front and rear split systems using primary and secondary master cylinder pistons 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.
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 lamp on the dashboard to glow as in front and rear split systems.
Schematic diagram of a typical hydraulic diagonally split brake system:
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.
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 lamp on the dashboard to glow as in front and rear split systems.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.