7. DIAGNOSIS SPONGY BRAKE PEDAL BRAKE ROUGH OR CHATTER ON APPLICATION EXCESSIVE BRAKE PEDAL EFFORT (HARD PEDAL) SR.NO. CAUSES REMEDY 1 Air in hydraulic system Bleed the system and top up 2 Soft or weak hose Check and Replace 3 Poor quality brake fluid Flush the system and refill with recommended grade of brake fluid 4 Low brake fluid level/ Brake Fluid level sensor faulty Check for any faults in wiring harness connecting to Brake fluid level sensor, rectify the issue. If not found faulty, replace the RESERVOIR COLLECTOR KIT. If Brake fluid found low, top-up the Brake fluid with recommended grade of brake fluid. 5 Pedal return spring came out / broken. Check and replace. 6 Faulty iVBAC system Check and replace iVBAC system SR.NO. CAUSES REMEDY 1 Excessive lateral run out in disc or parallelism Repair if possible or replace the disc not within specification 2 Seized caliper pistons Overhaul calipers 3 Broken pad slippers Replace 4 Distorted steering knuckle Replace knuckle 5 Caliper bolt loosened. Tighten the bolt to the specified torque SR.NO. CAUSES REMEDY 1 Brake pad soiled with brake fluid, oil or grease Replace 2 Brake pad worn below Recommended thickness Replace 3 Mal-functioning of Servo Identify the trouble in Servo and rectify 4 Partial/ Full system failure of iVBAC system Check and replace iVBAC system 5 Piston in calipers stuck or sluggish Remove caliper and overhaul 6 Fading brake due to non recommended grade of brake pads Replace with approved grade of brake BRAKES 10
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