Cummins/Onan — Radiator Core Cleaning - Dust Laden Environments
Maintenance
From a Cummins/Onan service manual covering: QSX15, QSX15-G8, QSX15-G9. Check it applies to your exact model before use.
Applies to: Cummins/Onan DFE, Cummins/Onan DFEJ, Cummins/Onan DFEK, Cummins/Onan QSx15, Cummins/Onan QSX15-G9 engine
Before you start
- It is vitally important that the core is thoroughly dried before start-up.
Procedure
- On enclosed sets with removable end panel(s), remove the end panel(s) to assist cleaning.
- Inspect the exterior of the radiator for obstructions.
- Do not 'wet' clean; regularly blow through the entire core area with low pressure compressed air against the direction of cooling airflow.
- Ensure resultant debris is removed and disposed of before engine start-up (industrial vacuum cleaner).
- Keep the air gun at right angles to the core face.
- If deemed essential, follow with pressurized water cleaning; thoroughly dry the core before start-up.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Blow through core with low pressure compressed air against direction of airflow
Full service-parts list: Cummins/Onan DFE →, Cummins/Onan DFEJ →, Cummins/Onan DFEK →, Cummins/Onan QSx15 →
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.