Cummins/Onan — Exhaust System Checks
Maintenance
From a Cummins/Onan operator's manual — check it applies to your exact model before use.
Applies to: Cummins/Onan HDKC
Before you start
- Exhaust gas is deadly - do not operate the generator set if there is an exhaust leak
Procedure
- Look and listen for exhaust system leaks while the generator set is running; shut down if a leak is found.
- Look for openings or holes between the generator set compartment and vehicle cab or living space.
- Replace dented, bent, or severely rusted sections of the tailpipe and make sure the tailpipe extends at least 25.4 mm (1 in) beyond the perimeter of the vehicle.
- Park the vehicle so that generator set exhaust gases disperse away from the vehicle.
- Do not operate power ventilators or exhaust fans while the vehicle is standing with the generator set running.
- Check all CO monitors to assure proper operation.
Specs & values
- Tailpipe must extend at least 25.4 mm (1 in) beyond the perimeter of the vehicle
Full service-parts list: Cummins/Onan HDKC →
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.