Brake systems · Brakes – mechanism · Repairing rear brakes (drum brakes)

Removing and installing brake shoes

Special tools and workshop equipment required

  • Hook - 3438-

2.4.1 Removing

  • Remove wheels.
  • Remove brake drum.
  • Remove wheel hub with wheel bearing ⇒ Running gear, axles, steering; Rep. gr. 42; Assembly overview - wheel bearings, drum brakes.
  • Remove spring plate with spring.
  • Lever out brake shoes in direction of arrow with aid of a screwdriver behind support plate.
  • Place brake shoe down on lower support plate.
  • Unhook lower return spring.
  • Unhook handbrake cable.
  • Remove brake shoes.
  • Clamp brake shoes in vice.
  • Remove spring -1- for wedge -2-.
  • Remove upper return spring -3- with special tool 3438.
  • Unhook locating spring -1- with special tool 3438.
  • Take push rod -2- and wedge -3- off brake shoe.

Cleaning:

Use only methylated spirits for cleaning the brake system.

2.4.2 Installing

  • Hook locating spring -1- into push rod -2- with special tool 3438.
  • Insert wedge -3- at same time.

Installation position:

Raised portion -arrow- must remain visible when installing.

  • Insert brake shoe with brake lever in push rod.
  • Connect return spring -3- with special tool 3438.
  • Attach spring -1- for wedge -2-.
  • Fit brake shoes onto wheel cylinder pistons.
  • Attach handbrake cable to brake lever.
  • Fit lower return spring and lift brake shoes behind lower support.
  • Fit spring and spring plate.
  • Install wheel hub with wheel bearing ⇒ Running gear, axles, steering; Rep. gr. 42; Assembly overview - wheel bearings, drum brakes.
  • Install brake drum.
  • Fit wheels.

Specified torque of wheel bolts ⇒ Running gear, axles, steering; Rep. gr. 44; Specified torques of wheel bolts.