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 MANUALSCHEVROLET2005OPTRA (CANADA) L4-2.0LREPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLDISC BRAKE SYSTEMDESCRIPTION AND OPERATION
2005 Chevrolet Optra (CANADA) L4-2.0L
Disc Brake System: Description and Operation
2005 Chevrolet Optra (CANADA) L4-2.0LSECTION Description and Operation
Disc Brake System Description and Operation
This caliper has a single bore and is mounted to the steering knuckle with 2 mounting bolts. Hydraulic pressure, created by applying the brake pedal, is converted by the caliper to a stopping force. This force acts equally against the piston and the bottom of the caliper bore to move the piston outward and to slide the caliper inward, resulting in a clamping action on the rotor. This clamping action forces the linings against the rotor, creating friction to stop the vehicle.
Important:
* Replace all components included in the repair kits used to service this caliper.
* Lubricate the rubber parts with clean brake fluid to ease assembly.
* Do not use lubricated shop air on brake parts, as damage to the rubber components may result.
* If any hydraulic component is removed or disconnected, it may be necessary to bleed all or part of the brake system.
* Replace the pads in the axle sets only.
* The torque values specified are for dry, unlubricated fasteners.
* Perform the service operations on a clean bench, free from all mineral oil materials.
RENDER: 1.0x
NO RELATED
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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.