Kohler generator overheating

[Curt Sprenger]

Greg,

My guess, based on experience, and likely lack of maintenance (due to age) over the years. Remove the radiator and have it properly reworked. Remove the blower assemble and have it reworked. R&R all hoses. New thermostat is good...test the temperature gauge as others have said.

On Thu, Aug 7, 2008 at 5:16 PM, Greg Young <"gregy1@yahoo.com"> wrote:

Hi Bryan - Thanks for the idea. Which way is it supposed to turn - exhausting air through the radiator, or pulling it in? I would think out, which is what ours is doing.

-Greg
86 PT40

----- Original Message ----
From: Bryan Altier <"altierb@bellsouth.net">
To: "WanderlodgeForum@yahoogroups.com"

Sent: Thursday, August 7, 2008 3:45:08 PM
Subject: Re: [WanderlodgeForum] Kohler generator overheating

Greg, We had some problems with ours overheating just at times, (hot weather) and I discovered that the cooling fan on the radiator was turning backwards. Reversed two wires and problem solved.

Bryan Altier

88WLWB 40

Greenville, SC

----- Original Message -----

From: "gregy1@yahoo.com"

To: "WanderlodgeForum@yahoogroups.com"

Sent: Thursday, August 07, 2008 4:09 PM

Subject: [WanderlodgeForum] Kohler generator overheating

Hi -

Our Kohler generator is overheating under load. So far I've replaced the thermostat, and so I guess that flushing the system is the next step.

Details:
86 PT-40
Kohler 12.5CCO67-RV
Yanmar 4-cyl engine
with no load ran cool. Started adding load at around 180 degrees
Added load up to 20A leg one, 30A leg two - all three cruise-air AC's running plus some other appliances. Maintained about 115V all the time.
Temp slowly climbed up to about 215 before I took the load off. In the past it actually tripped the high temp switch, but I didn't see any point in doing that again.
After I took the load off it slowly dropped to around 200. Stopped it then.

We've got two weeks before we head to the desert and 100+ heat. Any thoughts would be appreciated.

Thanks!
Greg Young
1986 PT40
Escondido, CA
(760) 807-1727

--
Curt Sprenger
1987 PT38 8V92 "MacAttack Racing"
Anaheim Hills, CA