Checking The Hydraulic Unit

ABS (ANTI-LOCK BRAKE SYSTEM)

ET3P61055
                                                             • Brake hose “3” (hydraulic unit to front brake
REMOVING THE HYDRAULIC UNIT
ECA14510
                                                               calipers)
CAUTION:                                                     • Brake hose “4” (hydraulic unit to proportion-
Do not remove the hydraulic unit to check                      ing valve)
the resistance of the solenoid valves and the                • Brake hose “5” (hydraulic unit to metering
ABS motor for continuity.                                      valve)
                                                       NOTE:
                                                           Do not operate the brake lever and brake pedal
                                                           while removing the brake hoses.
                                                           ECA14530

                                                           CAUTION:
                                                           When removing the brake hoses, cover the
                                                           area around the hydraulic unit to catch any
                                                           spilt brake fluid. Do not allow the brake fluid
                                                           to contact other parts.
EWA13930

       WARNING                                                                2                             4
Refill with the same type of brake fluid that is                       1
already in the system. Mixing fluids may re-
sult in a harmful chemical reaction, leading
to poor braking performance.
EC3P61010
CAUTION:                                                                                 3
• Handle the ABS components with care,
  since they have been accurately adjusted.                2. Remove:
  Keep them away from dirt and do not sub-                  • Hydraulic unit “1”
  ject them to shocks.                                 NOTE:
• The wheel sensors cannot be disassem-
                                                           To avoid brake fluid leakage and to prevent for-
  bled. Do not attempt to disassemble the
                                                           eign materials from entering the hydraulic unit,
  sensors. If faulty, replace with new sen-
                                                           insert a rubber plug “a” or a bolt (M10 × 1.25) into
  sors.
                                                           each union bolt hole.
• Do not turn the main switch to “ON” when
  removing the hydraulic unit.
• Do not clean with compressed air.
• Do not reuse the brake fluid.
• Brake fluid may damage painted surfaces                                                                a
  and plastic parts. Therefore, always clean
  up any spilt brake fluid immediately.                           1
• Do not allow any brake fluid to contact the
  couplers. Brake fluid may damage the cou-
  plers and cause bad contacts.
• If the union bolts for the hydraulic unit have
  been removed, be sure to tighten them to
                                                           ET3P61056
  the specified torque and bleed the brake
                                                           CHECKING THE HYDRAULIC UNIT
  system.
                                                           1. Check:
1. Remove:                                                  • Hydraulic unit “1”
 • Brake hose “1” (front brake master cylinder to             Cracks/damage → Replace the hydraulic
   hydraulic unit)                                            unit.
 • Brake hose “2” (rear brake master cylinder to
   hydraulic unit)

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