Two technicians are discussing the construction of a single piston caliper. Technician A says that the fluid is retained by a piston seal fitted in a groove machined in the piston. Technician B says that the piston is held in the caliper by a lock ring. Which technician is correct?

Question

Quizplus · Accepted Answer

In a single piston caliper, the fluid is retained by a piston seal fitted in a groove machined in the caliper bore, not the piston. The piston is not held by a lock ring; it is typically held in place by the caliper design and the hydraulic pressure.

Two Technicians Are Discussing the Construction of a Single Piston