Kawasaki Ninja

Kawasaki Ninja Service Manual: Caliper Fluid Seal Damage

Kawasaki Ninja Service Manual / Brakes / Calipers / Caliper Fluid Seal Damage

The fluid seal (piston seal) [A] is placed around the piston to maintain clearance between the pad and the disc. If the seal is in a poor condition, it could lead the pad to wear excessively or the brake to drag, which may cause the temperature of the discs or the brake fluid to increase.

Caliper Fluid Seal Damage


Brake fluid leakage around the pad.

Brakes overheat.

Considerable difference in inner and outer pad wear.

Seal and piston are stuck together.

If the fluid seal is replaced, replace the dust seal [B] as well. Also, replace all seals every other time the pads are changed.

Front Caliper [C] Rear Caliper [D]

Caliper Fluid Seal Damage


Caliper Installation
Install the caliper and brake hose lower end. For the front caliper, be sure to install the collars [A]. Replace the washers on each side of hose fitting with new ones. Touch the brake ho ...

Rear Caliper Dust Boot and Friction Boot Damage
Check that the dust boot [A] and friction boot [B] are not cracked, worn, swollen, or otherwise damaged. If they show any damage, replace it. ...

Other materials:

Diode Circuit Inspection
Remove the relay box (see Relay Box Removal). Check conductivity of the following pairs of terminals (see Relay Box Internal Circuit in this section). Diode Circuit Inspection The resistance should be low in one direction and more than 10 times as much in the other direction. If any dio ...

Brake Light Switches
When either the front or rear brake is applied, the brake light goes on. The front brake light switch requires no adjustment, but the rear brake light switch should be adjusted in accordance with the Periodic Maintenance Chart. Inspection Turn the ignition key to “ON”. The brake ligh ...

KIBS Hydraulic Unit Inspection
Remove the KIBS hydraulic unit (see KIBS Hydraulic Unit Removal). Visually inspect the connector terminals [A]. Replace the KIBS hydraulic unit or main harness if either of the terminals are cracked, bent, or otherwise damaged. If the KIBS hydraulic unit connector is clogged with mud or ...