12.5 Kohlar question(s)

[Robert Johannesen]

Hi Mike,

You're right - I put the 10 KW in my '78 FC. That was the best mod I've ever made in a motorhome. I filled up the gen compartment with the engine and gen housing, then mounted the radiator and electric fan inboard (with a 180 degree thermostat) facing the drive shaft with aft facing louvers so it would have negative pressure underneath (underway) and draw the air through the outer gen door and underneath the coach.
Worked like a champ and probably is still running for the guy who bought it and took off for Cost Rica!

I am going thru my '91 now doing alot of maintenance I have put off for a while. Air compressor, air governor, air bags, Primus are all on the list. The air governor is mounted remotely inside the right frame rail next to the wide transmission so a guy with more than a 6" chest cannot possibly reach it....time to hire a skinny kid!! Most of the other stuff a "portly old Blister" can do!!

Take care, Mike!

---

From: mbulriss <mbulriss@...>
To: WanderlodgeForum@yahoogroups.com
Sent: Mon, October 4, 2010 12:24:43 PM
Subject: [WanderlodgeForum] Re: 12.5 Kohlar question(s)

Hi Bob,

OK, I have to ask. What did you have a 6.5KW Onan in? Not your 91, right?

Mike Bulriss
1991 WB40 "Texas Minivan"
San Antonio, TX

--- In "WanderlodgeForum%40yahoogroups.com", Robert Johannesen wrote:
>
> Chuck,
> ÂÂÂÂ Did youÂreplace the soundproofing insulation over the generator? If so,
> which did you decide to use? Mine needs to be replaced soon!
>
> ÂÂÂÂÂI know what you mean about the generator being cramed in a small spot. I
> replaced my 6.5 KW Onan with a 10KW diesel and had to do some "re-arranging"!Â
>
> Bob & Judy Johannesen
> Argyle, TX.ÂÂ '91 WLWB "Seldom Blue"
>
>
>

>
> ________________________________
> From: Chuck Wheeler
> To: "WanderlodgeForum%40yahoogroups.com"
> Sent: Sun, October 3, 2010 5:39:54 PM
> Subject: RE: [WanderlodgeForum] 12.5 Kohlar question(s)
>
> Â
> Thanks Ralph, I kind of guessed that you would be the one to reply!Â
> Â
> I would appreciate the picture! Usually I can figure things out, but there is
> no logical place for the spring I can see. I have the generator out and am
> trying to get every thing done by next Saturday. That’s when I have to return
> the pallet jack that I used to remove it and that it is currently sitting on. I
> would gladly pay you for it plus the shipping
costs. I am not sure why they put
> a 12.5kw in a FC31. It is on a smaller tray than normal and is very cramped to
> try and work on when installed. That’s why I decided to take it out and do
> everything right.
> Â
> One question I forgot. My high temperature cutoff sensor did not pass the
> test. I discovered that there are two resistance sensors installed like would
> be used for a temperature gauge. The cutoff should be a switch. I am guessing
> it would be set for 200-210 degrees. Do you have any information about the
> cutoff sensor?
> Â
> My guess is that we will probably be out of town during the X-Mas Rally. During
> the holiday season Kathy’s Real Estate work slows down and we usually are
> travelling to visit family for the Holidays.Â
>
>
Â
> - Chuck Wheeler-
> 1982 FC 31SB Fort Worth TX
>
> ________________________________
>
> From:"WanderlodgeForum%40yahoogroups.com" [mailto: "WanderlodgeForum%40yahoogroups.com"
> ] On Behalf Of Ralph L. Fullenwider
> Sent: Saturday, October 02, 2010 11:12 PM
> To: "WanderlodgeForum%40yahoogroups.com"
> Subject: Re: [WanderlodgeForum] 12.5 Kohlar question(s)
> Â
> Â
> Hi Chuck:
>
> Tomorrow I will take a photo of the spring location and send it.
>
2. Are you going to be at the X-Mas Rally? if so I will bring you a boot
> for it.
> 3. The micro switch was an add on for some reason and not needed.
>
> Safe travels,
>
> Ralph and Charolette Fullenwider
> "84FC35 "Ruff Diamond"
> Duncan , Oklahoma
>
> At 06:47 PM 10/2/2010 -0500, you wrote:
>
> >After struggling generator problems I removed the generator and have been
> >cleaning things up. I have rebuilt and static tested the control box
> >undoing modifications that someone had made. The original design is
> >pretty simple and reliable. I do have two mechanical questions as I have
> >electrical drawings but no mechanical drawings.
> >
> >
> >
> >1. Fuel cutoff has always been a problem. There is a spring from the
> >actuator arm on the injector pump to the timing belt housing and it
has
> >interference problems with other items in the area. Most Diesels I have
> >worked on have a spring on the Fuel cutoff solenoid. Where is the return
> >spring supposed to be?
> >
> >
> >
> >2. Is there a source for the rubber boot on the fuel cutoff solenoid?
> >
> >
> >
> >3. There is a micro-switch mounted below the fuel cutoff solenoid. It
> >does not appear on the generator electrical drawings and what ever
> >activated it is missing. Does anyone know what it is supposed to control
> >or indicate?
> >
> >
> >
> >- Chuck Wheeler-
> >
> >1982 FC 31SB Fort Worth TX
>