Kohler generator overheating

[Greg Young]

Hi Scott - Thanks for the info. We have the standard vertical, so I think the fan's OK. Time to flush, and if that doesn't improve it, I'll probably take it in for "professional" (i.e. expensive) assessment.

Greg Young
1986 PT40
Escondido CA

----- Original Message ----
From: Scott Forman <scottforman75@...>
To: WanderlodgeForum@yahoogroups.com
Sent: Thursday, August 7, 2008 5:54:06 PM
Subject: [WanderlodgeForum] Re: Kohler generator overheating

Greg,



If you bus has the stock vertical radiator with traditional fan, it

should blow out...or at least that is what mine does.



Later models...and some retro-fitted earlier ones...have a horizontal

radiator with squirrel's cage fan blowing down and out.



I ran my Yanmar this past weekend at heavy load in 104 degree heat

and it never went above 180.



Scott Forman

86 PT38

Memphis



--- In "WanderlodgeForum%40yahoogroups.com", Greg Young

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

> To: "WanderlodgeForum%40yahoogroups.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: Greg Young

> To: Wanderlodge Forum

> 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

>