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Zorluk: OrtaBraking Systems

A technician is performing a front disc brake pad replacement on a passenger vehicle. Place the following service steps in the correct chronological order from first to last.

  1. 1Safely raise and support the vehicle on jack stands, then remove the front wheel assembly.
  2. 2Unbolt the caliper slide pins and suspend the caliper body using a wire hanger to avoid straining the flexible brake hose.
  3. 3Compress the caliper piston fully back into the caliper bore using a piston retraction tool.
  4. 4Remove the old brake pads and install new abutment hardware clips and friction pads into the mounting bracket.
  5. 5Reinstall the caliper assembly over the pads and pump the brake pedal several times before operating the vehicle.

Cevap

The correct service sequence begins with safely raising the vehicle and removing the wheel, followed by unbolting and hanging the caliper, compressing the caliper piston into its bore, installing the new hardware and brake pads into the bracket, and finishes with reinstalling the caliper and pumping the brake pedal.
A disc brake service requires a logical progression: gaining access by lifting the vehicle and removing the wheel, detaching and safely supporting the caliper, retracting the hydraulic piston to accommodate thicker new linings, seating new hardware and friction pads into the bracket, and finally reassembling the caliper and pumping the brake pedal to re-establish proper pad contact.

Adım Adım Çözüm

1
Elevate the vehicle securely and remove the wheel assembly.
Exposes the brake rotor, caliper, and mounting bracket.
Direct access to the wheel-end braking hardware is required before any mechanical service can take place.
2
Remove the caliper guide pin fasteners and suspend the caliper with a wire hook.
The caliper is detached from the rotor without hanging by its flexible rubber brake hose.
Brake hoses are vulnerable to internal damage and must never support the dead weight of a heavy caliper.
3
Push the caliper piston completely back into its cylinder bore.
Maximizes the opening width inside the caliper housing.
Unworn replacement brake pads have full friction material thickness and will not fit inside an extended caliper.
4
Replace the anti-rattle hardware clips and seat the new brake pads into the caliper bracket.
New friction pads are properly positioned against the rotor friction surfaces.
Fresh clips prevent pad vibration, rattling noise, and binding during brake operation.
5
Fasten the caliper back over the bracket and pump the brake pedal multiple times.
Forces the piston outward until the pads contact the rotor, restoring firm hydraulic pedal response.
Failing to pump the pedal leaves excessive piston-to-pad clearance, causing the pedal to drop to the floor on initial application.

Anahtar Kavram

Disc Brake Pad Service and Safety Procedures
Tahmini Süre:1m 15s
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Braking Systems

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