KYMCO AK 550 Service Manual page 354

10..Brake System
AK 550
ABS Servicing Precautions
There are a number of important precautions that should be followed servicing
the ABS system.
□ This ABS system is designed to be used with a 12V sealed battery as its power
source. Do not use any other battery except for a 12V sealed battery as a power
source.
□ Do not reverse the battery cable connections. This will damage the ABS
hydraulic unit.
□ To prevent damage to the ABS parts, do not disconnect the battery cables or
any other electrical connections when the ignition switch is ON or while the
engine is running.
□ Take care not to short the leads that are directly connected to the battery
positive (+) terminal to the chassis ground.
□ Do not turn the ignition switch is ON while any of the ABS electrical connectors
are disconnected. The ABS hydraulic unit memorizes service codes.
□ Do not spray water on the electrical parts, ABS parts, connectors, leads and
wiring.
□ Whenever the ABS electrical connections are to be disconnected, first turn off
the ignition switch.
□ The ABS parts should never be struck sharply, as with a hammer, or allowed to
fall on a hard surface. Such a shock to the parts can damage them.
□ The ABS parts cannot be disassembled. Even if a fault is found, do not try to
disassemble and repair the ABS parts, replace the ABS unit with a new
component.
□ The ABS has many brake lines, pipes, and leads. And the ABS cannot detect
problems with the conventional braking system (brake disk wear, unevenly worn
brake pads and other mechanical faults). To prevent trouble, check the brake
lines and pipes for correct routing and connection, the wiring for correct routing,
and the brakes for proper braking power. Be sure to check for fluid leaking, and
bleed the brake line thoroughly.
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