Technician A says that contaminants tend to collect in the caliper bore of a hydraulic disc brake system so the piston should never be forced back into its bore without cracking the bleed screw.Technician B says that ABS hydraulic brake systems are more vulnerable to problems caused by contaminants in brake fluid.Who is correct?

A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B

Question

Kirby Swenson · Accepted Answer

Final Answer : C, Explanation :  Technician A is correct because forcing the piston back without opening the bleed screw can push contaminants back into the hydraulic system, potentially causing blockages or damage. Technician B is correct because ABS systems have more precise tolerances and are more sensitive to contamination, which can lead to malfunctions or reduced effectiveness.

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