| Generator compartment storage [message #312866] |
Mon, 06 February 2017 16:14  |
Glenbrook75
Messages: 46
Registered: January 2017
Location: Dauphin, Manitoba
Karma: 0
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The gen in my coach is toast has not been working for 10 years but PO never removed it. I would like to take it out and rebuilt compartment into storage. Has anyone done this and have any hints.
Terry
75 Glenbrook
Dauphin, Manitoba
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| Re: Generator compartment storage [message #312895 is a reply to message #312866] |
Tue, 07 February 2017 17:26  |
ree_eric
Messages: 43
Registered: February 2004
Location: Alexandria, Ontario, Cana...
Karma: 0
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I took mine out, unbolted the whole generator with the drawer from the frame, careful very heavy. I cut some 1/2" thick wood pieces to go front to back on the flange of the aluminium rails to create a flat surface that I could lay a single piece of plywood over the battery and generator areas. I put a thin wall piece of 1 1/4 square tube that fit inside the frame that is cut at the front face. 1/2 wood strip on top of this also. Could be 1/2" plywood over the whole gen area instead of 1/2"strips. I had to dent in one face of the tubing for a few inches on each end to get it to slide into the existing frame, went in a but farther at 1 end and then slid it back into the other. I put 5/8 plywood over all this and the aluminium that supported the batteries. I will likely put batteries back there as it is vented.
Eric & Ree '74 ex-Sequoia (parts) '75 Eleganza (TB, exhaust x-over blocking plates, Manny reaction arms and discs, 3"exhaust rear muffler, aux vacuum, fuel tank sealing, rebuilt senders and new rubber, propane hot water heater.) Alexandria, Ontario, Canada
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| Re: Generator compartment storage [message #312989 is a reply to message #312871] |
Fri, 10 February 2017 07:49 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Glenbrook75 wrote on Mon, 06 February 2017 19:15Sorry far away in Manitoba, I plan to rebuild the gen once it is out and use it as a backup.
Terry,
Unless it has a bag (>1000) hours on it, there should be no reason to rebuilt it. If you are worried, carefully unscrew a head and look at the condition of the cylinder bore. It is probably just fine.
These machines are simple and for the most part reliable*.
The asterisk is because the ignition system "sucks" and the control board ages out.
When you have it out, the first thing to do is check that the field continuity is there. If you don't get close to 38ohms, the rewind is not cheap.
Otherwise:
You can find several articles about using Pertronix ignition that makes a much bigger improvement than you might expect.
If the control board has problems, just get a new Dinosaur one from JimK.
The carburetor will need a go-through - get the right kit from JimK. If you order an Walboro LMB kit on line it will have the wrong needle and seat.
Oil leaks are typically the oil filter adapter and the front cover and can often be cured by tightening the fasteners.
Unscrew the heads and be careful of the gaskets. They should be the copper covered type and are completely reusable if they are not damaged.
If you get there and it does not fire right up, (I will be surprised) come back here and we can work on a diagnosis.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: Generator compartment storage [message #312995 is a reply to message #312989] |
Fri, 10 February 2017 10:29 |
Glenbrook75
Messages: 46
Registered: January 2017
Location: Dauphin, Manitoba
Karma: 0
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Thanks Matt appreciate the comments I will check the hrs on the gen when I visit the coach this weekend my concern was that it has sat gor so many years at first I thought it would be a throw away but it seems I might have been hasty I am no mechanic but figure the gen me get be good chance to learn
Terry
75 Glenbrook
Dauphin, Manitoba
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| Re: Generator compartment storage [message #312997 is a reply to message #312866] |
Fri, 10 February 2017 10:42 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Even if it isn't serviceable, there are some rare parts which would be of value to others. Field windings, manifolds, oil filter adapter, etc.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: Generator compartment storage [message #313006 is a reply to message #312997] |
Fri, 10 February 2017 12:05 |
Glenbrook75
Messages: 46
Registered: January 2017
Location: Dauphin, Manitoba
Karma: 0
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Thanks I am impressed how the community trades stuff around I will make sure if I can't get it going I will make it available to others.
Terry
75 Glenbrook
Dauphin, Manitoba
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| Re: [GMCnet] gmc neighbor [message #313455 is a reply to message #313439] |
Sat, 18 February 2017 22:14 |
Glenbrook75
Messages: 46
Registered: January 2017
Location: Dauphin, Manitoba
Karma: 0
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My gen has not been functioning for several years the po had given up on it and disconnected it but left it in I assumed it would be worthless or too expensive to fix so was asking about taking it out and building a storage compartment. Sounds like it is worth fixing so will give it a try once I get it home
Terry
75 Glenbrook
Dauphin, Manitoba
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| Re: [GMCnet] gmc neighbor [message #313456 is a reply to message #313455] |
Sat, 18 February 2017 23:18 |
A Hamilto
Messages: 4508
Registered: April 2011
Karma: 39
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Glenbrook75 wrote on Sat, 18 February 2017 22:14My gen has not been functioning for several years the po had given up on it and disconnected it but left it in I assumed it would be worthless or too expensive to fix so was asking about taking it out and building a storage compartment. Sounds like it is worth fixing so will give it a try once I get it home Read here:
http://gmcmotorhome.info/generator.html#sleeping
When you get to the part that says "Jumper board terminal 9 to 5 & you should hear fuel pump & see fuel coming from pump." you need to understand that the pump could take a long time to prime itself. It might not ever self-prime if the shut-off solenoid is stuck closed. You might want to try running a line from the pump inlet to a gas can on the ground instead of expecting it to pull from the tank through the solenoid for the initial testing.
The gas that evaporated from the fuel pump and fuel shut-off solenoid might have left varnish in them, gluing them up so they won't work. I had to remove and fill the fuel pump on my Onan with acetone and let it soak for a week before it freed up. I took the shut-off solenoid off and still don't know if it will open up when it gets 12V applied to it. After that, I re-installed the pump and it after I primed it with a few ounces of gas, it pumped the carb bowl full and stopped ticking. When I jumpered pin 5 to pin 9, it started up and ran and made 120VAC.
Once you get to the point that the pump is pushing gas into the carburetor, the carb needle valve might be stuck open, and then you will need to get it freed up before you even push the "Start" switch.
My experience with gas engines is that a very high percentage of the time that you get fuel/air mix to the cylinders, they will run, no matter how long they have been sitting.
That doesn't mean the 120VAC power generating section is going to work. But you have to get the engine running before you even put a voltmeter on it.
Let us know how it goes.
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