Practice question

Why must a technician never use compressed air to clean brake dust from a brake assembly?

Brake dust can contain asbestos or other harmful fibers that become airborne and can be inhaled
The high pressure can blow the caliper pistons out of their bores
Compressed air will contaminate the brake pads with oil from the compressor
It causes the brake rotor to rust instantly

Answer: A — Brake dust can contain asbestos or other harmful fibers that become airborne and can be inhaled

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