Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Forester 1999-2004 Approved Subaru Forester 1999-2000 MECHANICAL COMPONENTS SECTION Brakes MSA5T0125A27811

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MSA5T0125A27811


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4-4   [K100]                                      DIAGNOSTICS
1. Entire Brake System


1. Entire Brake System
                                    Trouble and possible cause                             Corrective action
1. Insufficient braking (1) Fluid leakage from the hydraulic mechanism    Repair or replace (cup, piston seal, piston boot,
                                                                          master cylinder piston kit, pipe or hose).
                      (2) Entry of air into the hydraulic mechanism       Bleed the air.
                      (3) Excessively wide shoe clearance                 Adjust the clearance.
                      (4) Wear, deteriorated surface material, adhering   Replace, grind or clean.
                      water or fluid on the lining
                      (5) Improper operation of master cylinder, disc     Correct or replace.
                      caliper, brake booster or check valve
2. Unstable or uneven (1) Fluid on the lining, drum or rotor              Eliminate cause of fluid leakage, clean, or
braking                                                                   replace.
                      (2) Drum or rotor eccentricity                      Correct or replace the drum or rotor.
                      (3) Worn brake drum, or damage to the drum          Correct by grinding, or replace.
                      caused by sand
                      (4) Improper lining contact, deteriorated surface   Correct by grinding, or replace.
                      material, improper inferior material, or wear
                      (5) Deformed back plate                             Correct or replace.
                      (6) Improper tire inflation                         Inflate to correct pressure.
                      (7) Disordered wheel alignment                      Adjust alignment.
                      (8) Loosened back plate or the support installing   Retighten.
                      bolts
                      (9) Loosened wheel bearing                          Retighten to normal tightening torque or replace.
                      (10) Trouble in the hydraulic system                Replace the cylinder, brake pipe or hose.
                      (11) Uneven effect of the parking brake             Check, adjust, or replace the rear brake and
                                                                          cable system.
3. Excessive pedal       (1) Entry of air into the hydraulic mechanism    Bleed the air.
stroke                   (2) Excessive play in the master cylinder push   Adjust.
                         rod
                         (3) Fluid leakage from the hydraulic mechanism   Repair or replace (cup, piston seal, piston boot,
                                                                          master cylinder piston kit, pipe or hose).
                      (4) Improperly adjusted shoe clearance              Adjust.
                      (5) Improper lining contact or worn lining          Correct or replace.
4. Brake dragging or  (1) Insufficient pedal play                         Adjust play.
improper brake return (2) Improper master cylinder return                 Clean or replace the cylinder.
                      (3) Clogged hydraulic system                        Replace.
                      (4) Improper return or adjustment of parking        Correct or adjust.
                      brake
                      (5) Weakened spring tension or breakage of shoe     Replace the spring.
                      return spring
                      (6) Excessively narrow shoe clearance               Adjust the clearance.
                      (7) Improper disc caliper operation                 Correct or replace.
                      (8) Improper adjusted wheel bearing                 Adjust or replace.
5. Brake noise (1)    (1) Hardened or deteriorated lining                 Replace the shoe assembly or pad.
(creak sound)         (2) Worn lining                                     Replace the shoe assembly or pad.
                      (3) Loosened back plate or the support installing   Retighten.
                      bolts
                      (4) Loose wheel bearing                             Retighten to normal tightening torque.
                      (5) Dirty drum or rotor                             Clean the drum or rotor, or clean and replace the
                                                                          brake assembly.
6. Brake noise (2)       (1) Worn lining                                  Replace the shoe assembly or pad.
(hissing sound)          (2) Improper installed shoe or pad               Correct or replace the shoe assembly or pad.
                         (3) Loose or bent drum or rotor                  Retighten or replace.




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                                              DIAGNOSTICS                                                [K100] 4-4
                                                                                               1. Entire Brake System


                                Trouble and possible cause                           Corrective action
7. Brake noise (3)   In the case of the disc brake:
(click sound)        (1) Excessively worn pad or the support         Replace the pad or the support.
                     In the case of the drum brake:
                     (1) Excessively worn shoe ridge                 Replace the back plate.
                     (2) Lack of oil on the shoe ridge surface and   Add more grease.
                     anchor




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4-4     DIAGNOSTICS


MEMO:




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