All modern medium and slow speed diesel engines have components assembled via bolts that are tensioned hydraulically, both for removal and reassembly. When using such hydraulic devices, to what metallurgical state are you subjecting such bolts?

Question

Accepted Answer

When tightened, they are below the metal's elastic limit.

Answer

Initially above the metal's elastic limit.

Answer

When tightened, they are above the metal's elastic limit.

Answer

When tightened, they are at the metal's elastic limit.

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