| No joy Genny (Onan woes) [message #213553] |
Sat, 06 July 2013 21:10  |
Mike Teets
Messages: 299
Registered: January 2004
Location: Dublin, OH
Karma:
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Senior Member |
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Today, I pulled the Onan 6kw power drawer so I could get to the back side and clean it up and see what is going on. It came out easily as a previous owner had even attached the remote panel with a trailer plug. Yeah previous owner!!! I remembered a box with an air Onan air filter from the previous owner. Pulled out the box and found a new set of (4) brushes, and a new OEM bridge rectifier with the correct pin out in boxes.
I found that the brush holders were quite dirty and the brushes were not sliding up and down. I removed the units, cleaned them thoroughly and put them back together. I compared my old brushes to the new and they were almost the same size so I put the old ones back in. I installed the NOS bridge rectifier after bench testing it and ensuring it went in the correct direction. My plastic plug has +/-/F1/F2 marked on the back side.
I tried pulling the back bell housing off but it was not budging and I didn't want to risk breaking it. Tried the plastic hammer method in the maintenance manual but it appears to be stuck on the shaft. I was unable to test the armature outside of the unit.
Put everything back together and the unit fires up with a touch of the switch. But... still zero volts output measured at the generator and inside when connected to the coach.
Any suggestions?
Mike, Dublin OH
Mike, GMCing since 2002
77 Palm Beach, 260, 403
Dublin, OH
http://teamteets.com/gmc/
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