Audi Q7 Owners & Service Manuals

Audi Q7: Front Brake Pads, Removing and Installing

Audi Q7 (4M) 2016-2024 Workshop Manual / Chassis / Brake System / Mechanical Components / Front Brake Pads, Removing and Installing

Special tools and workshop equipment required

  • Piston Resetting Tool -T10145-
  • Lithium Grease -G 052 150 A2-. Refer to the Parts Catalog.

  Caution

This procedure contains mandatory replaceable parts. Refer to component overview prior to starting procedure.

Mandatory Replacement Parts

  • Brake Pad Wear Indicator Wire - Replace when pads are replaced.
  • Brake Pad Retaining Plate - Replace when pads are replaced.
  • Brake Pad Spring - Replace when pads are replaced.

Removing

- Remove the brake caliper. Refer to → Chapter "Brake Caliper, Removing and Installing".

- Free up the wire for the brake pad wear contact -1-, to do so open the protective cap -3- and disengage the wire from the brake caliper -arrows-.

  Note

Ignore item -2-.

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  Note

Label the brake pads that will be used again when removing. Install in the same position, otherwise the braking effect will be uneven.

- Remove the brake pads -3 and 4- one after the other toward the center of the brake caliper.

- Unclip the brake pad retaining plate -1-.

- When the brake pads are being replaced, unclip the brake pad spring -2-.

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  Note

  • If reusing the brake pads check the brake pad spring and the brake pad retaining plate for damage, if necessary replace.
  • Do not change the shape of the brake pad spring and brake pad retaining plate.

Installing

Install in reverse order of removal and note the following:

- When the brake pads are replaced, check the brake rotors for wear and damage:

  • Brake rotor wear limit. Refer to → Chapter "Technical Data".

  Note

  • Always replace brake pads on the same axle at the same time.
  • Replacing the brake pad wear indicator wire.
  • Use the complete repair kit when installing new brake pads.

  WARNING

Health Risk.

Do not blow out brake system with compressed air.

  Note

  • Use only mineral spirits to clean the brake caliper.
  • Check the protective caps of the brake caliper pistons for damage and install the complete repair kit, if necessary. Refer to → Chapter "Dust Cap, Removing and Installing".

  Caution

Danger of contamination and paint damage from escaping brake fluid.

  • If the brake pads are worn out and unnecessary brake fluid was filled, the brake fluid may overflow, when the brake caliper pistons in the brake cylinders are pressed back.
  • Check the brake fluid level before pressing back the brake caliper pistons. If there is brake fluid up to the "MAX" mark, some brake fluid will need to be extracted.
  • Use the Brake Charger/Bleeder Unit -VAS5234- to extract brake fluid from brake fluid reservoir.

- Use the Piston Resetting Tool -T10145- to press the brake caliper piston completely back into the brake caliper.

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- Clean the brake caliper at the contact surfaces -arrows- for the brake pad retaining plate and thinly coat with Lithium Grease -G 052 150 A2-.

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- Clip the brake pad spring -2- and brake pad retaining plate -1- in the brake caliper.

  • The brake pad spring must be completely locked into the brake caliper.

- If re-using, install the marked brake pads in the same location.

- Pay attention to the installation position on new brake pads. Refer to → Fig. "Brake Pads Installation Position".

- Insert the brake pads -3 and 4- in succession into the brake caliper by pressing each brake pad against the brake pad spring and pushing them all the way onto the brake pad retaining plate.

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  Note

  • Make sure the brake hose is routed correctly.
  • Make sure the brake hose is not blocked, bent, twisted or rubbing against the vehicle.

- Install the brake pad wear indicator wire. Refer to → Chapter "Brake Pad Wear Indicator Wire, Removing and Installing".

- Install the brake caliper. Refer to → Chapter "Brake Caliper, Removing and Installing".

- Check brake fluid level, and fill if necessary.

  WARNING

Risk of accident!

  • With the vehicle stationary, firmly press the brake pedal several times so that the brake pads in the operating condition properly set in their respective position.
  • Make sure the brakes are working correctly before driving the vehicle for the first time.

Tightening Specifications

  • Refer to → Chapter "Overview - Front Brakes"

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