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Pressure testing

PDM uses a process of pressure testing in which the cylinder head is sealed, immersed in a tank of water, pressurised and inspected for any leaks.

The process

Pressure testing

When a pressurised cylinder head is immersed in water, a leak or crack cannot be overlooked.

In order for the sealing plates to seat correctly and the leak or crack to be correctly located and identified, the cylinder head must be clean.

Where this sits

Stage 01 — teardown & cleaning

  1. 01
    Teardown & cleaning

    Complete disassembly, thermal and hot-tank cleaning, and inspection before any metal is cut.

  2. 02
    Precision machining

    Boring, honing, grinding and align boring — every cut indexed to a true relationship.

  3. 03
    Final assembly

    Careful assembly in a dedicated clean room, isolated from the rest of the operation.

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