What should be done before removing a spring brake chamber for service?

What should be done before removing a spring

Multiple choice — select the best answer

AMechanically cage the power spring
BDrain all air from the air tanks
CRemove the push rod clevis pin
DApply the service brakes fully

✓ Correct answer: A. Mechanically cage the power spring The compressed spring in a spring brake chamber stores tremendous energy that can cause serious injury or death if released uncontrolled. The spring must be mechanically caged (restrained) using the manufacturer's specified procedure before any disassembly or removal.

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What should be done before removing a spring brake chamber for service?

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