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onan 7000 watt marquis

donq1576
Explorer
Explorer
how do you remove the flywheel from the rotor rotor number 201-3388-s3 it is on a onan 7000 watt marquis
5 REPLIES 5

j-d
Explorer II
Explorer II
Found it! At least for our old BFA "4.0 RV Genset" which was twin-cylinder opposed 1800-RPM. Parts list shows Flywheel with four holes around the crankshaft hole. A Steering Wheel or Vibration Damper Puller (with the correct capscrews to thread into the flywheel) should pull it. You'd back the bolt holding flywheel to crankshaft out a couple turns and let the puller bear on it. At least that's how the pic in my manual looks. Of course the design could have changed. BFA was an old machine.

NOTE: OP seems to indicate that the flywheel is between Engine and Generator sections. The gensets in my manual have the flywheel in a blower housing at one end of the unit, not between the sections...
If God's Your Co-Pilot Move Over, jd
2003 Jayco Escapade 31A on 2002 Ford E450 V10 4R100 218" WB

j-d
Explorer II
Explorer II
I tried to find something in the manual I have for an older BFA and couldn't find anything about this removal.

But let me offer a warning: Be sure you have torqued the flywheel back down before you do anything that could lead to a cylinder firing. This will break the flywheel at the keyway. Torque it first!
If God's Your Co-Pilot Move Over, jd
2003 Jayco Escapade 31A on 2002 Ford E450 V10 4R100 218" WB

sdetweil
Explorer
Explorer
donq1576 wrote:
how do you remove the flywheel from the rotor rotor number 201-3388-s3 it is on a onan 7000 watt marquis


I had to buy a steering wheel puller.
2012 Ford F350 DRW, 6.7 diesel.
2013 Keystone Alpine 3720FB

1492
Moderator
Moderator
Moved from Forum Technical Support

hershey
Explorer
Explorer
Have never done so but....
Most cases, the flywheel will have two smaller holes about an inch or so from the center of the flywheel. You find a couple bolts that size and a puller (NAPA) and use that to remove a pulley or flywheel.
Again, I'm guessing that is the way yours comes off. But you didn't get any answers so its something to check.
hershey - albuquerque, nm
Someday Finally Got Here
My wife does all the driving - I just get to hold the steering wheel.
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Expedition - Chevy Equinox