Yanmar — Turbocharger Turbine Cleaning (MET18, 900/1000 min-1, solid cleaning)
Maintenance
From a Yanmar manual — check it applies to your exact model before use.
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Before you start
- Excessive quantity of cleaning agent can cause surging.
- Periodic disassembly servicing must be implemented separately.
Procedure
- Adjust engine load to about 75% and turbine inlet temperature below 510 °C.
- Open valves in order (1) then (3) then (4); circulate air for 0.5-1 minute to cool.
- Close valves in order (4) then (3) then (1).
- Fill specified amount of solid cleaning agent into tank (2); close cap firmly.
- Open valves (1) then (3) then (4) to pass air and fill the cleaning agent.
- Close valves in order (4) then (2) then (1).
Specs & values
- Solid cleaning agent 0.05-0.1 l per one time
- Marine grit #10, grain dia. 1.7-2.4 mm (Walnut-shell)
- General service air 0.4-1.0 MPa
Source: Yanmar manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.