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Home >> BMW >> 2018 >> M4 2D Convertible, Automatic DCT Trans >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes - Repair -- M4 (F82 & F83) >> 34 32 Brake Lines >> Replacing front left or right brake hose

Replacing front left or right brake hose

Necessary preliminary work: 

Removal: 

Press brake pedal down to floor and secure with pedal support.

NOTE: The pedal support may only be released when the brake lines are reconnected.
This prevents brake fluid from emerging from the expansion tank and air from entering the system when the brake lines are opened.
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Pull out retaining clip (1) upwards.

Detach brake hose from brake line (2).

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Detach brake hose (2) from brake caliper (1).

Remove brake hose (2).

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Installation: 

IMPORTANT: Make sure that the brake hose is routed correctly!

Mount brake hose (2) on brake caliper (1) and tighten.

Tightening torque 34 32 2AZ .

IMPORTANT: First tighten brake hose on brake caliper.
Move wheels into straight-ahead position.
Never twist brake hose when installing it and avoid all contact with parts attached rigidly to the body.
G13692377Courtesy of BMW OF NORTH AMERICA, INC.

Mount brake hose (3) on brake line (2) and tighten.

IMPORTANT: Grip brake hose at square head (3) to prevent connector from turning in retaining bracket.

Tightening torque 34 32 1AZ .

Fit retaining clip (1).

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Remove pedal support.

G04754178Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work: