onan

[jim hall]

Recently my onan stopped working - it cranks but will not start. used
green manual to trouble shoot it. I found that jumping 9 & 11 alowed me
to start and run. Upon inspection of the unit I also found the wire
going to the flywheel alt. had broken. The manual states "When the
engine starts and rpm increases, the flywheel atl. developes a voltage
which is rectified and energizes relay k2." Does that mean I have to
have the flywheel alt tied in to operate the onan. The book says that
relay k3 is defective if you can jump terminals 9 to 11 and the system
starts and to replace the board.

On shore power in Pawleys Island
Jim Hall 77 PB

 

[jim hall]

Duane,

Thank for the info on the flywheel. Pulled flywheel to fix muffler
bracket - bolt all the way out. Butt spliced new wires for alt and
wrapped with high temp cover. wired everything back together and unit
runs great. No oil leaks now. I may order a refurbished board as a spare
as this one is 20+ years old. I replaced plugs and wires also and have
new electronic ignition module to install soon.

Jim Hall
77PB in Pawleys Island

Jim Hall
I have been on travel for a week & just returned today. The Output of
the Flywheel Alternator (AC voltage) is required at the Board to
Identify
that the Onan is running & requires the starter to be disconnected, etc.

Yes it is required for proper operation.

 

[dave1]

>Thank for the info on the flywheel. Pulled flywheel to fix muffler
>bracket - bolt all the way out. ....

Be sure to torque the flywheel bolt to factory spec and then recheck it
after running it for a while. Bad things happen when the flywheel breaks
and comes off. Yes, I know this first hand....

Dave
73 Sequoia