Whether you store your genset in the winter or rely on it for year-round operation, chances are it's time to give your Cummins Onan genset a check-up and cleaning. Keeping your genset in good running order saves maintenance costs and increases its life.
Use this checklist to go over the condition of your genset, and visit your closest Cummins Onan dealer for a service or for any maintenance parts you might need.
Overall Condition of the Generator: Check for signs of rodents
and insects. Nests can damage components and clog vents, causing the
unit to overheat.
Remove wasp nests
and spider webs
Replace wires or
components that appear worn, frayed, or chewed on by rodents.
Wipe down, clean
and lightly oil or paint any rusted parts.
Exhaust System: Check to make sure it wasn't plugged or
damaged during storage.
Replace exhaust
pipes if bent or kinked.
Tighten all
connections and hose clamps.
Position hangers
securely.
Fuel System
Inspect and
tighten connections.
Inspect for signs
of visible leaks.
Change oil and
fuel filters if not done prior to storage.
Cooling System
Add or replace
coolant as necessary. See operator's manual for instructions.
Inspect and
adjust water pump and/or alternator drive belt.
Battery
Inspect for signs
of corrosion and clean battery connections as necessary.
Tighten
connections between battery, coach chassis and generator.
Charge the
battery completely.
Engine
Run until fully
warm to burn off any fogging agents that may have been used during
storage.
Measure and
adjust frequency as necessary.
AC Alternator
Inspect brushes
for contact and cleanliness. Poor brush contacts can mean low or no AC
output.
Run genset at
50-75% load to dry up any condensation or moisture in windings.
Inspect and
adjust voltage as necessary.