When

Before reinstalling a piston that you removed

Items required

  • Dry, lint-free tissue

  • Light source

  • Isopropanol

Follow these steps

  1. Inspect the piston for signs auf damage.

  2. TIP

    Hold the rear side of the piston into the light. The refraction of the light makes dirt particles appear larger.

  3. Even if the piston seems to be clean: Hold the piston and carefully move your fingernail over the piston surface. You should not feel inconsistent or rough areas.

  4. Depends on the situation:

Situation

Action

No damage visible, no inconsistent or rough areas

1. Carefully rinse the piston, using isopropanol.

2. With a dry, lint-free tissue, rub the piston several times.

3. Reinstall the piston.

Piston is scratched or scored

Install a new piston.