REAR DRUM BRAKE REMOVAL AND INSTALLATION


caution
  • The vehicle speed detection encoder collects any metallic particle easily, because it is magnetised. Make sure that the encoder should not collect any metallic particle. Check that there is not any trouble prior to reassembling it. <Vehicles with ABS or ASC>
  • Always keep magnetic substances away from the vehicle speed detection encoder. <Vehicles with ABS or ASC>
  • When the rear wheel speed sensor is removed and installed, make sure that its pole piece does not contact with surrounding parts to avoid damage. <Vehicles with ABS or ASC>
Pre-removal operation
  • Parking brake cable adjusting nut loosening (Refer to GROUP 36, On-vehicle Service - Parking brake lever stroke check and adjustment ).
  • Brake fluid draining

 Post-installation operation
  • Brake fluid refilling and air bleeding (Refer to ).
  • Parking brake lever stroke adjustment (Refer to GROUP 36 - On-vehicle Service, Parking Brake Lever Stroke Check and Adjustment .)




Removal steps


1.
 Hub cap
<<A>>
 >>C<<
 2.
 Self-locking nut
<<B>>
3.
 Rear wheel hub assembly


4.
 Adjusting hole cover


5.
 Shoe hold down cup


6.
 Shoe hold down spring


7.
 Shoe hold down pin


8.
 Shoe-to-lever spring


9.
 Shoe-to-shoe spring


10.
 Retainer spring


11.
 Shoe and lining assembly


12.
 Auto adjuster


13.
 Adjuster lever


14.
 Shoe hold down cup


15.
 Shoe hold down spring


16.
 Shoe hold down pin
<<C>>
 >>B<<
 17.
 Parking brake cable connection


18.
 Shoe and lever assembly
<<D>>
 >>A<<
 19.
 Retainer


20.
 Parking lever


21.
 Shoe and lining assembly


22.
 Brake pipe connection


23.
 Wheel cylinder


24.
 Rear wheel speed sensor


25.
 Backing plate

REMOVAL SERVICE POINTS

<<A>> SELF-LOCKING NUT REMOVAL

caution
  • Do not apply the vehicle weight to the wheel bearing while loosening the self-locking nut, or the wheel bearing will be damaged.
  • Use an manual tool only to remove the self-locking nut. (Do not use an electric or air tool).
  • Do not loosen the self-locking nut more than eight turns per one minute.

<<B>> REAR WHEEL HUB ASSEMBLY REMOVAL


  1. An auto adjuster is loosened.
  2. Use the following special tools to remove the rear wheel hub assembly.

  • Axle shaft puller (MB991292)

<<C>> PARKING BRAKE REAR CABLE CONNECTION REMOVAL

Withdraw the parking brake cable from the backing plate.
note Insert a 12 mm-wrench into the parking brake cable to facilitate the cable withdrawal.

<<D>> RETAINER REMOVAL

(Use a flat-tipped (-) screwdriver or similar tool to open the retainer, and remove the retainer.

INSTALLATION SERVICE POINTS

>>A<< RETAINER INSTALLATION

Crimp the retainer firmly to the pin with pliers.

>>B<< PARKING BRAKE REAR CABLE CONNECTION INSTALLATION

Pull back the parking brake rear cable to assure it is tightly fastened to the cable retainer.

>>C<< SELF-LOCKING NUT INSTALLATION

caution
  • Before securely tightening the self-locking nuts, make sure there is no load on the wheel bearings. Otherwise the wheel bearing will be damaged.
  • Use an manual tool only to tighten the self-locking nut. (Do not use an electric or air tool).
  • Do not tighten the self-locking nut more than eight turns per one minute.
Tighten the self-locking nut to the specified torque.