Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Legacy 2000-2003 Approved Subaru Legacy 2000 2000 Service Manual MECHANISM AND FUNCTION SECTION Brakes MSA5TCD00L18221

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MSA5TCD00L18221


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             LEGACY (W2260BE_SGML Complete)



                                MECHANISM AND FUNCTION                                   [M2A0]    4-4
                                                                                     2. Rear Drum Brake


2. Rear Drum Brake
D The drum brake is a leading-trailing type. When fluid pressure is applied to the wheel cylinder,
the piston moves to expand the leading and trailing shoes while the lower shoe return spring joint
acts as a pivot. Thus, the shoes come in contact with the inner surface of the drum, producing
braking action.
D When brakes are applied during the forward movement, the tip of the brake leading shoe lining
is pressed against the inner surface of the drum so as to oppose the drum direction. This increases
the braking force. The trailing shoe, however, undergoes a force that pushes back so that braking
force applied to the trailing shoe decreases.
The above shoe operation is reversed while the vehicle is backing up, with the braking force ex-
erted on the trailing shoe greater than that on the leading shoe. It follows that there is no difference
in braking force between the directions in which the vehicle moves.
D An inspection hole with a rubber cap is provided in the back plate for easier inspection of the
wear of the linings.




                                                                                              B4H1628A


A: AUTOMATIC ADJUSTER
The brake lining-to-drum clearance is automatically compensated for by the automatic adjuster.
When the brake shoe is contracting after expansion, the adjuster lever rotates the adjuster assem-
bly's screw to lengthen adjuster assembly so that the clearance is maintained at the specified val-
ue.




                                                                                               G4H0035




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