Cummins/Onan — Cleaning Turbocharger Parts
Maintenance · All turbocharger parts
From a Cummins/Onan service manual covering: ST-50, T-18A, VT-50. Check it applies to your exact model before use.
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Before you start
- Do not use a chemical solution or solvent that will damage the parts
- Avoid damage to precision machined surfaces
Procedure
- Place all parts in a divided wire basket so parts are not damaged through contact.
- Use only an approved cleaning solvent; parts may also be washed in hot water and soap, mineral spirits or steam cleaned.
- Use a soft bristle brush; never a wire brush or stiff bristle brush.
- Flush oil passages in the bearing housing from the drain end.
- Optionally leave parts in approved cleaning solvent 12 to 24 hours, then pump solvent through passages again.
- Drain and steam clean parts to remove all carbon and grease.
- Blow off excess water and dry with moisture free compressed air.
- Place parts carefully in a clean basket to avoid damage and dirt.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Cummins/Onan service 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.