Front Brakes, 1LA/1LJ: Overview

Front Brakes, 1LA/1LJ

• Install the entire repair kit.

• After replacing brake pads, depress brake pedal several times firmly to properly seat brake pads in their normal operating position.

• When siphoning brake fluid, always use a bleeder bottle that is used exclusively for brake fluid. Brake fluid is poisonous. NEVER siphon brake fluid with your mouth!

• Check brake caliper for ease of movement by moving it sideways.

Overview






1 - Brake Pads

• Wear limit, refer to => [ Brakes PR Codes ] Brakes PR Codes.

• Illustration of left front with brake wear cable.

• The inner surface (with tension spring) in the left brake caliper is equipped with a cable for wear indicator.

• Must always be replaced together on both sides of axle.

• Before installing the brake pads, clean the pad guide surface and coat it with a film of Polycarbamide grease (G 052 142 A2).

• Removing and Installing, refer to => [ Front Brake Pads ] Front Brake Pads.

• Check brake pad thickness.

• There are different versions, refer to the Parts Catalog.

• Before installing new brake pads, thoroughly clean the brake calipers of contaminants (grease-free). When doing this, pay particular attention to the cleanliness of the brake pad contact surfaces.

2 - Brake Carrier

• Attach to wheel bearing housing.

• The retaining pins for the brake pads on the brake carrier must not be loosened under any circumstances.

3 - Bolt

• Brake carrier to wheel bearing housing.

• Use new bolts, refer to the Parts Catalog.

• 196 Nm

4 - Bolt

• Tighten the brake caliper to the brake carrier.

• 30 Nm

5 - Brake Line Connection to the Brake Caliper

• 20 Nm

6 - Bolt

The 4 bolts must not be loosened under any circumstances.

7 - Brake Caliper Housing

• When doing work, do not allow to hang from brake hose, rather suspend it from the body using bundling wire.

• The brake caliper must not be disassembled.

• Except for "Brake Pads, Removing and Installing" => [ Front Brake Pads ] Front Brake Pads, "Front Brake Caliper, Servicing" and replacing the guide pins, no further repairs should made to the brake caliper.

• Hose must be installed free of twists.

8 - Spring Clamp

• Remove the brake pads before removal.

• Insert after installing the brake pads.

9 - Brake Pad Retaining Pins

The 4 retaining pins for the brake pads on the brake carrier must not be loosened under any circumstances.

10 - Securing the Brake Pad in the Brake Caliper

11 - Brake Rotor

• Wear limit, refer to => [ Brakes PR Codes ] Brakes PR Codes.

• Must always be replaced together on both sides of axle.

• Removing and Installing, refer to => [ Front Brake Rotor ] Front Brake Rotor.

• Coat contact surfaces between brake rotor and wheel hub with Polycarbamide grease (G 052 142 A2).

• Allocation

• Thickness

12 - Brake Pad Bolt

• 5 Nm