Diagnostic Information And Procedures; Brake Symptom Diagnosis; Repair Instructions; Brake Pedal Height Inspection And Adjustment - Suzuki GSF1250 Service Manual

4A-7 Brake Control System and Diagnosis:

Brake Symptom Diagnosis

Condition
Insufficient brake power
Brake squeaking
Excessive brake lever
stroke
Leakage of brake fluid
Brake drags
Brake locked (GSF1250A/
SA)

Brake Pedal Height Inspection and Adjustment

Refer to "Brake System Inspection in Section 0B
(Page 0B-17)".

Diagnostic Information and Procedures

Possible cause
Leakage of brake fluid from hydraulic
system.
Worn pads and disc.
Oil adhesion on friction surface of pads. Clean disc and pads.
Air in hydraulic system.
Not enough brake fluid in the reservoir. Replenish.
Carbon adhesion on pad surface.
Tilted pad.
Damaged wheel bearing.
Loose front-wheel axle or rear-wheel
axle.
Worn pads and disc.
Foreign material in brake fluid.
Clogged return port of master cylinder.
Air in hydraulic system.
Insufficient brake fluid.
Improper quality of brake fluid.
Insufficient tightening of connection
joints.
Cracked hose.
Worn piston and/or cup.
Worn piston seal and dust seal.
Rusty part.
Insufficient brake lever or brake pedal
pivot lubrication.
Malfunctioning ABS, if equipped.

Repair Instructions

B718H14106001
Correction / Reference Item
Repair or replace.
Replace.
Bleed air.
Repair surface with sandpaper.
Correct pad fitting or replace.
Replace.
Tighten to specified torque.
Replace.
Replace brake fluid.
Disassemble and clean master cylinder.
Bleed air.
Replenish fluid to specified level; bleed air.
Replace with correct fluid.
Tighten to specified torque.
Replace.
Replace piston and/or cup.
Replace piston seal and dust seal.
Clean and lubricate.
Lubricate.
Inspect ABS.

Front Brake Light Switch Inspection

Inspect the front brake light switch in the following
procedures:
1) Disconnect the front brake light switch lead coupler
(1).
B718H14104001
B718H14106002
1
I718H1410038-02