Turbine Overhaul (OH) Test 1 Practice

Ink Marking Note: The note states that you should NOT use ink marking in which scenario?

Where after assembly the marked area will contact another surface On curved surfaces On painted surfaces On non-metal parts

Correct Answer:

Where after assembly the marked area will contact another surface

Explanation:

Ink marking should not be used on surfaces that will contact another surface after assembly because the mark can transfer to the mating part, smear, or rub off during handling and fitting. This contamination can affect the fit, sealing surfaces, or lubrication paths and obscure the reference mark that you need for correct reassembly. In turbine overhaul, keeping mating surfaces clean and free of ink residue is essential, so avoid ink marks on areas that will be in contact after assembly. On surfaces that won’t touch another part, ink can be acceptable, provided the mark remains legible and doesn’t interfere with function.

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