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:

Immobilizer System (Equipped Models)
This motorcycle is equipped with an immobilizer system to protect the motorcycle from theft. This system provides a theft proof device by means of matching a code between the inbuilt key transponder and ECU. If the code does notmatch, ignition system, injectors, subthrottle valve actuator an ...

Oxygen Sensor Heater Power Source Voltage Inspection
NOTE Be sure the battery is fully charged. Turn the ignition switch to OFF. Remove the fuel tank (see Fuel Tank Removal in the Fuel System (DFI) chapter). Disconnect the oxygen sensor lead connector and connect the measuring adapter [A] between these connectors as shown in the fig ...

Brake Pad Wear Inspection
Remove the brake pads (see Front/Rear Brake Pad Removal in the Brakes chapter). Check the lining thickness [A] of the pads in each caliper. If the lining thickness of either pad is less than the service limit [B], replace both pads in the caliper as a set. Front Brake Pad [C] Rea ...