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:

Check 3-1: CAN Communication Line Resistance Inspection
Set the hand tester [A] to the ×1 Ω range and connect it to the terminal [11] and [12] in the meter unit. Special Tool - Hand Tester: 57001-1394 CAN Communication Line Resistance (at Meter Unit) Standard: 122 126 Ω If the tester reading is not specified, replace the meter ...

Front Forks/Rear Shock Absorber Operation Inspection
Pump the forks down and up [A] 4 or 5 times, and inspect the smooth stroke. If the forks do not smoothly or noise is found, inspect the fork oil level or fork clamps (see Front Fork Oil Change in the Suspension chapter). Pump the rear seat down and up [A] 4 or 5 times, and inspec ...

Spring Preload Adjustment
To adjust the spring preload, turn the spring preload adjuster [A]. The standard adjuster setting is the 6 turns in from the fully counterclockwise position. WARNINGIf both adjusters are not adjusted equally, handling may be impaired and a hazardous condition may result. B ...