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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 rear left or right brake hose

Replacing rear 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.
G04754178Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect brake hose from brake line (1).

Grip brake hose at square head (2) so that connecting piece cannot rotate in retaining bracket.

Detach brake hose from brake caliper (3).

G13804045Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

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

Mount brake hose on brake caliper (3) and tighten.

Tightening torque 34 32 3AZ .

Mount brake hose on brake line (1) and tighten.

IMPORTANT: First tighten brake hose on brake caliper.
Never twist brake hose when installing it and avoid all contact with parts attached rigidly to the body.

Tightening torque 34 32 1AZ .

G13692433Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work: