Cummins/Onan QSX15 / QSx15 — Crankcase Breather Tube - Disassemble and Assemble
Maintenance
For the Cummins/Onan QSX15 / QSx15, from the Cummins/Onan operator's manual.
Applies to: Cummins/Onan QSx15, Cummins/Onan QSX15 engine
Procedure
- Remove crankcase breather tube from breather vent tube.
- Use solvent to clean inside of crankcase breather tube and dry with compressed air.
- Use air pressure to blow through vent tube. Replace vent tube if clogged.
- Install crankcase breather tube on engine.
Full service-parts list: Cummins/Onan QSx15 →
Source: Cummins/Onan operator's 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.