Kohler generator overheating

[Scott Forman]

Greg,

Others may chime in, but I am not convinced that the fan "sucking"
instead of "blowing" is your problem. 80's FC's (including my
old '82 FC) had basically the same radiator/fan set-up and the fan
sucked in so as to not be blowing hot air out on the "porch" area.
As long as the fan is moving air across the radiator, it should not
matter which direction it is moving.

You may want to look for plugged hoses on a radiator stuck closed.

Scott

--- In WanderlodgeForum@yahoogroups.com, Greg Young
wrote:
>
> Hi Bryan & Scott and everybody
>
> Follow up to our generator issues. I had the radiator serviced and
it was only 20% blocked, so the guess is that was not the problem.
However, I was wrong about the fan. Ours appeared to be sucking air
in rather than blowing out. There is a junction box leading to the
fan motor, which was wired normally - Hot (black) to black, neutral
(white) to white. I reversed these and the motor continues to suck
in. So how does one reverse the wiring and actually make it change
direction?
>
> I'm also a little baffled about oil levels and think we may have a
plug somewhere - the dipstick showed oil level above max, yet when I
opened the plug, with the filter off and the oil filler cap off, no
oil came out. Putting in more resulted in oil spilling out the
breather hose.
>
> Sorry, I'm not a gearhead like so many of you, but I can follow
instructions if they're detailed enough...
>
> Thanks!
> Greg Young
> 1986 PT40
> Escondido, CA
> (760) 807-1727
>
>
>
> ----- Original Message ----
> From: Greg Young
> To: WanderlodgeForum@yahoogroups.com
> Sent: Thursday, August 7, 2008 7:17:51 PM
> Subject: Re: [WanderlodgeForum] Re: Kohler generator overheating
>
>
> 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@ yahoogroups. 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@ 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: 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
> >
>

[Gregory OConnor]

Greg in a DC (direct current) motor like the 12v water pump,
reversing the + and - from the battery will reverse the rotation of
the spinn. quite often the DC - lead from the battey is refered to
as a "ground" we call it ground because that is the path used to run
the direct current directly back at (not to) the battery. but it is
not universal with "AC Ground"

The 120V juice to run the fan (if it is not 220)is not DC it is AC
or alternating current. there is no direction. To reverse an AC
motor you change the "starting wingings" with the "running
windings". usuly there is a face plate that labels the colors. You
would want to rewire the black to black and white to white to
maintain ground protection with the genset power.


One other point to make about wires with motors is that if there are
compacitors holding stored juice, they can give a hell of a shock
to the touch. ANd 120V is 120V be it from a wall socket in the house
or a little 3 horse honda inverter. test for voltage first with a
meter then with a screwdriver prior to touching it with your hands

Maybe that is the way the fan is required to run? I guess it depends
on how the squirl cage fins are set up????? Bird engineers may have
made several changes to try and prevent dust at the fan and the lack
of air with the air streeming past at 60 mph???????

OIL****************
the drain plug for the engine is on the engine??? maybe you are
pulling a dry plug of the generator head???
if it truly was the oil plug,,,
pull the filler cap off; remove oil drain plug; keep the filter on
and ;blow some air down the filler cap ( aprox 15-25 psi) you should
get oil out of the drain plug, or air .

Gregory O'Connor
951-830-5997


-- In WanderlodgeForum@yahoogroups.com, Greg Young
wrote:
>
> Hi Bryan & Scott and everybody
>
> Follow up to our generator issues. I had the radiator serviced
and it was only 20% blocked, so the guess is that was not the
problem. However, I was wrong about the fan. Ours appeared to be
sucking air in rather than blowing out. There is a junction box
leading to the fan motor, which was wired normally - Hot (black) to
black, neutral (white) to white. I reversed these and the motor
continues to suck in. So how does one reverse the wiring and
actually make it change direction?
>
> I'm also a little baffled about oil levels and think we may have a
plug somewhere - the dipstick showed oil level above max, yet when I
opened the plug, with the filter off and the oil filler cap off, no
oil came out. Putting in more resulted in oil spilling out the
breather hose.
>
> Sorry, I'm not a gearhead like so many of you, but I can follow
instructions if they're detailed enough...
>
> Thanks!
> Greg Young
> 1986 PT40
> Escondido, CA
> (760) 807-1727
>
>
>
> ----- Original Message ----
> From: Greg Young
> To: WanderlodgeForum@yahoogroups.com
> Sent: Thursday, August 7, 2008 7:17:51 PM
> Subject: Re: [WanderlodgeForum] Re: Kohler generator overheating
>
>
> 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@ yahoogroups. 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@ 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: 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
> >
>

[Gregory OConnor]

I bet Scott is right. 20% blockage is 50 to 60 % efficiency lost. If
flow and air was not the issue prior, it may well be now that you
have drained the block and still have air in the system. I would
loosen some hoses to remove air that is traped and cavitating the
pump????? may be RobR can explain how he got the air out.


I know you are in a pinch to get off to BM so give me a call and I
can try and fine some one to look at it in Temecula. I made a phone
call . ON the road it is good to remember that many euipment rental
yards have inhouse mechanics that are well versed in genset repair
and usuly a wizz on equipment with varity of facets.

GregO'Connor

--- In WanderlodgeForum@yahoogroups.com, "Scott Forman"
<scottforman75@...> wrote:
>
> Greg,
>
> Others may chime in, but I am not convinced that the fan "sucking"
> instead of "blowing" is your problem. 80's FC's (including my
> old '82 FC) had basically the same radiator/fan set-up and the fan
> sucked in so as to not be blowing hot air out on the "porch"
area.
> As long as the fan is moving air across the radiator, it should
not
> matter which direction it is moving.
>
> You may want to look for plugged hoses on a radiator stuck closed.
>
> Scott
>
> --- In WanderlodgeForum@yahoogroups.com, Greg Young
> wrote:
> >
> > Hi Bryan & Scott and everybody
> >
> > Follow up to our generator issues. I had the radiator serviced
and
> it was only 20% blocked, so the guess is that was not the
problem.
> However, I was wrong about the fan. Ours appeared to be sucking
air
> in rather than blowing out. There is a junction box leading to
the
> fan motor, which was wired normally - Hot (black) to black,
neutral
> (white) to white. I reversed these and the motor continues to
suck
> in. So how does one reverse the wiring and actually make it
change
> direction?
> >
> > I'm also a little baffled about oil levels and think we may have
a
> plug somewhere - the dipstick showed oil level above max, yet when
I
> opened the plug, with the filter off and the oil filler cap off,
no
> oil came out. Putting in more resulted in oil spilling out the
> breather hose.
> >
> > Sorry, I'm not a gearhead like so many of you, but I can follow
> instructions if they're detailed enough...
> >
> > Thanks!
> > Greg Young
> > 1986 PT40
> > Escondido, CA
> > (760) 807-1727
> >
> >
> >
> > ----- Original Message ----
> > From: Greg Young
> > To: WanderlodgeForum@yahoogroups.com
> > Sent: Thursday, August 7, 2008 7:17:51 PM
> > Subject: Re: [WanderlodgeForum] Re: Kohler generator overheating
> >
> >
> > 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@ yahoogroups. 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@ 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: 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
> > >
> >
>

[Bryan Altier]

Greg,

Looking at the motor at the end of the fan, mine had two wires coming out of the winding and wrapped up before going back into the winding. I removed the wrapping and found that there were two connectors that I swapped causing the motor to run in the proper direction. Look and see if there is a sticker on the end of the fan housing with an arrow "direction". Since I got mine blowing out the bottom of the fan my overheating problems are apparently gone.

Bryan Altier

88 WLWB 40

Greenville, SC

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

From: "gregy1@yahoo.com"

To: "WanderlodgeForum@yahoogroups.com"

Sent: Thursday, August 14, 2008 7:36 PM

Subject: Re: [WanderlodgeForum] Re: Kohler generator overheating

Hi Bryan & Scott and everybody

Follow up to our generator issues. I had the radiator serviced and it was only 20% blocked, so the guess is that was not the problem. However, I was wrong about the fan. Ours appeared to be sucking air in rather than blowing out. There is a junction box leading to the fan motor, which was wired normally - Hot (black) to black, neutral (white) to white. I reversed these and the motor continues to suck in. So how does one reverse the wiring and actually make it change direction?

I'm also a little baffled about oil levels and think we may have a plug somewhere - the dipstick showed oil level above max, yet when I opened the plug, with the filter off and the oil filler cap off, no oil came out. Putting in more resulted in oil spilling out the breather hose.

Sorry, I'm not a gearhead like so many of you, but I can follow instructions if they're detailed enough...

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

----- Original Message ----
From: Greg Young com>
To: WanderlodgeForum@yahoogroups.com
Sent: Thursday, August 7, 2008 7:17:51 PM
Subject: Re: [WanderlodgeForum] Re: Kohler generator overheating

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@<WBR>gmail.com>
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
>

[Rob Robinson]

I bled the air out using boththe petcock upbeside the thermostat and the one down on the radiator tank. The radiator on mine has two petcocks. One on the top side of the tank and one under which acts as the low drain point. I bled air out using the radiator tank top side petcock.

2008/8/14 Gregory OConnor <"Gregoryoc@aol.com">

I bet Scott is right. 20% blockage is 50 to 60 % efficiency lost. If
flow and air was not the issue prior, it may well be now that you
have drained the block and still have air in the system. I would
loosen some hoses to remove air that is traped and cavitating the

pump????? may be RobR can explain how he got the air out.

I know you are in a pinch to get off to BM so give me a call and I
can try and fine some one to look at it in Temecula. I made a phone
call . ON the road it is good to remember that many euipment rental

yards have inhouse mechanics that are well versed in genset repair
and usuly a wizz on equipment with varity of facets.

GregO'Connor

--- In "WanderlodgeForum%40yahoogroups.com", "Scott Forman"

<scottforman75@...> wrote:
>
> Greg,
>
> Others may chime in, but I am not convinced that the fan "sucking"
> instead of "blowing" is your problem. 80's FC's (including my

> old '82 FC) had basically the same radiator/fan set-up and the fan
> sucked in so as to not be blowing hot air out on the "porch"
area.
> As long as the fan is moving air across the radiator, it should

not
> matter which direction it is moving.
>
> You may want to look for plugged hoses on a radiator stuck closed.
>
> Scott
>
> --- In "WanderlodgeForum%40yahoogroups.com", Greg Young

> wrote:
> >
> > Hi Bryan & Scott and everybody
> >
> > Follow up to our generator issues. I had the radiator serviced
and
> it was only 20% blocked, so the guess is that was not the

problem.
> However, I was wrong about the fan. Ours appeared to be sucking
air
> in rather than blowing out. There is a junction box leading to
the
> fan motor, which was wired normally - Hot (black) to black,

neutral
> (white) to white. I reversed these and the motor continues to
suck
> in. So how does one reverse the wiring and actually make it
change
> direction?
> >
> > I'm also a little baffled about oil levels and think we may have

a
> plug somewhere - the dipstick showed oil level above max, yet when
I
> opened the plug, with the filter off and the oil filler cap off,
no
> oil came out. Putting in more resulted in oil spilling out the

> breather hose.
> >
> > Sorry, I'm not a gearhead like so many of you, but I can follow
> instructions if they're detailed enough...
> >
> > Thanks!
> > Greg Young

> > 1986 PT40
> > Escondido, CA
> > (760) 807-1727
> >
> >
> >
> > ----- Original Message ----
> > From: Greg Young
> > To: "WanderlodgeForum%40yahoogroups.com"

> > Sent: Thursday, August 7, 2008 7:17:51 PM
> > Subject: Re: [WanderlodgeForum] Re: Kohler generator overheating
> >
> >
> > 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%40yahoogroups.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@ yahoogroups. 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@ 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: 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
> > >
> >
>

--
Rob, Sue & Merlin Robinson
94 WLWB

[Leroy Eckert]

If you look closely, there is an arrow on the squirrel cage housing showing direction. At least there is on mine. The motor on mine is 208v. I have a typical wiring diagram from the box to the fan motor if anyone needs it. Leroy Eckert 1990 WB-40 Smoke N Mirrors Dahlonega, GA Royale Conversion --- On Thu, 8/14/08, Bryan Altier wrote: From: Bryan Altier Subject: Re: [WanderlodgeForum] Re: Kohler generator overheating To: WanderlodgeForum@yahoogroups.com Date: Thursday, August 14, 2008, 9:05 PM Greg, Looking at the motor at the end of the fan, mine had two wires coming out of the winding and wrapped up before going back into the winding. I removed the wrapping and found that there were two connectors that I swapped causing the motor to run in the proper direction. Look and see if there is a sticker on the end of the fan housing with an arrow "direction". Since I got mine blowing out the bottom of the fan my overheating problems are apparently gone. Bryan Altier 88 WLWB 40 Greenville, SC ----- Original Message ----- From: "gregy1@yahoo.com" To: "WanderlodgeForum@yahoogroups.com" Sent: Thursday, August 14, 2008 7:36 PM Subject: Re: [WanderlodgeForum] Re: Kohler generator overheating Hi Bryan & Scott and everybody Follow up to our generator issues. I had the radiator serviced and it was only 20% blocked, so the guess is that was not the problem. However, I was wrong about the fan. Ours appeared to be sucking air in rather than blowing out. There is a junction box leading to the fan motor, which was wired normally - Hot (black) to black, neutral (white) to white. I reversed these and the motor continues to suck in. So how does one reverse the wiring and actually make it change direction? I'm also a little baffled about oil levels and think we may have a plug somewhere - the dipstick showed oil level above max, yet when I opened the plug, with the filter off and the oil filler cap off, no oil came out. Putting in more resulted in oil spilling out the breather hose. Sorry, I'm not a gearhead like so many of you, but I can follow instructions if they're detailed enough... Thanks! Greg Young 1986 PT40 Escondido, CA (760) 807-1727 ----- Original Message ---- From: Greg Young To: WanderlodgeForum@ yahoogroups. com Sent: Thursday, August 7, 2008 7:17:51 PM Subject: Re: [WanderlodgeForum] Re: Kohler generator overheating 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@ gmail.com> 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 >

[P & D]

Scott,

I had just replaced my fan motor, and left
the wires on motor as purchased, and it sucked air in. It would run in 100
degree weather for 30 minutes or so before it would overheat. On the end of
the motor were 4 wires, 2 sets of 2 wires tied together. On the side of the
motor it said to change directions, switch which wires are connected to each
other.

Switched the wire and made the fan blow
out of compartment, and instantly water temperature went down and will run all
day in 100 degree weather.

Paul
Potter

1987 PT38

Hesperia CA

---

From: WanderlodgeForum@yahoogroups.com [mailto:WanderlodgeForum@yahoogroups.com] On Behalf Of Scott Forman

Sent: Thursday, August 14, 2008
5:40 PM

To: WanderlodgeForum@yahoogroups.com

Subject: [WanderlodgeForum] Re:
Kohler generator overheating

Greg,



Others may chime in, but I am not convinced that the fan "sucking"

instead of "blowing" is your problem. 80's FC's (including my

old '82 FC) had basically the same radiator/fan set-up and the fan

sucked in so as to not be blowing hot air out on the "porch" area.

As long as the fan is moving air across the radiator, it should not

matter which direction it is moving.



You may want to look for plugged hoses on a radiator stuck closed.



Scott



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

wrote:

>

> Hi Bryan & Scott and everybody

>

> Follow up to our generator issues. I had the radiator serviced and

it was only 20% blocked, so the guess is that was not the problem.

However, I was wrong about the fan. Ours appeared to be sucking air

in rather than blowing out. There is a junction box leading to the

fan motor, which was wired normally - Hot (black) to black, neutral

(white) to white. I reversed these and the motor continues to suck

in. So how does one reverse the wiring and actually make it change

direction?

>

> I'm also a little baffled about oil levels and think we may have a

plug somewhere - the dipstick showed oil level above max, yet when I

opened the plug, with the filter off and the oil filler cap off, no

oil came out. Putting in more resulted in oil spilling out the

breather hose.

>

> Sorry, I'm not a gearhead like so many of you, but I can follow

instructions if they're detailed enough...

>

> Thanks!

> Greg Young

> 1986 PT40

> Escondido, CA

> (760) 807-1727

>

>

>

> ----- Original Message ----

> From: Greg Young

> To: "WanderlodgeForum%40yahoogroups.com"

> Sent: Thursday, August 7, 2008 7:17:51 PM

> Subject: Re: [WanderlodgeForum] Re: Kohler generator overheating

>

>

> 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@<wbr>...>

> To: "WanderlodgeForum%40yahoogroups.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@ yahoogroups. 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@ 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: 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

> >

>

[Scott Forman]

This is not a squirrel cage. The pre-87 units are old-fashioned fan
units.

Scott

--- In WanderlodgeForum@yahoogroups.com, Leroy Eckert
wrote:
>
> If you look closely, there is an arrow on the squirrel cage housing
showing direction. At least there is on mine. The motor on mine is
208v. I have a typical wiring diagram from the box to the fan motor
if anyone needs it.
> Leroy Eckert
> 1990 WB-40 Smoke N Mirrors
> Dahlonega, GA
> Royale Conversion
>
> --- On Thu, 8/14/08, Bryan Altier wrote:
> From: Bryan Altier
> Subject: Re: [WanderlodgeForum] Re: Kohler generator overheating
> To: WanderlodgeForum@yahoogroups.com
> Date: Thursday, August 14, 2008, 9:05 PM
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Greg,
> Looking at the motor at the end of the fan, mine
> had two wires coming out of the winding and wrapped up before going
back into
> the winding. I removed the wrapping and found that there were two
> connectors that I swapped causing the motor to run in the proper
> direction. Look and see if there is a sticker on the end of the
fan
> housing with an arrow "direction". Since I got mine blowing out
the bottom
> of the fan my overheating problems are apparently gone.
>
> Bryan Altier
> 88 WLWB 40
> Greenville, SC
>
> ----- Original Message -----
> From:
> Greg Young
> To: WanderlodgeForum@ yahoogroups. com
>
> Sent: Thursday, August 14, 2008 7:36
> PM
> Subject: Re: [WanderlodgeForum] Re:
> Kohler generator overheating
>
>
>
>
>
> Hi Bryan & Scott and everybody
>
> Follow up to our generator
> issues. I had the radiator serviced and it was only 20% blocked,
so the
> guess is that was not the problem. However, I was wrong about
the
> fan. Ours appeared to be sucking air in rather than blowing
out.
> There is a junction box leading to the fan motor, which was wired
normally -
> Hot (black) to black, neutral (white) to white. I reversed these
and the
> motor continues to suck in. So how does one reverse the wiring
and
> actually make it change direction?
>
> I'm also a little baffled about oil
> levels and think we may have a plug somewhere - the dipstick
showed oil level
> above max, yet when I opened the plug, with the filter off and
the oil filler
> cap off, no oil came out. Putting in more resulted in oil
spilling out
> the breather hose.
>
> Sorry, I'm not a gearhead like so many of you, but I
> can follow instructions if they're detailed enough...
>
> Thanks!
> Greg
> Young
> 1986 PT40
> Escondido, CA
> (760) 807-1727
>
>
>
> -----
> Original Message ----
> From: Greg Young
> To:
> WanderlodgeForum@ yahoogroups. com
> Sent: Thursday, August 7, 2008
> 7:17:51 PM
> Subject: Re: [WanderlodgeForum] Re: Kohler generator
> overheating
>
>
>
> 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@ gmail.com>
> 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@
> yahoogroups. 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@
> 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: 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
> >
>

[Scott Forman]

Is yours squirrel's cage over horizontal rad or traditional fan over
vertical rad? I thought the 87's switched to the squirrel's cage.

A squirrel's cage fan doesn't work worth a damn trying to suck in.

Scott

--- In WanderlodgeForum@yahoogroups.com, "P & D" wrote:
>
> Scott,
>
>
>
> I had just replaced my fan motor, and left the wires on motor as
purchased,
> and it sucked air in. It would run in 100 degree weather for 30
minutes or
> so before it would overheat. On the end of the motor were 4 wires,
2 sets
> of 2 wires tied together. On the side of the motor it said to
change
> directions, switch which wires are connected to each other.
>
>
>
> Switched the wire and made the fan blow out of compartment, and
instantly
> water temperature went down and will run all day in 100 degree
weather.
>
>
>
> Paul Potter
>
> 1987 PT38
>
> Hesperia CA
>
>
>
> _____
>
> From: WanderlodgeForum@yahoogroups.com
> [mailto:WanderlodgeForum@yahoogroups.com] On Behalf Of Scott Forman
> Sent: Thursday, August 14, 2008 5:40 PM
> To: WanderlodgeForum@yahoogroups.com
> Subject: [WanderlodgeForum] Re: Kohler generator overheating
>
>
>
> Greg,
>
> Others may chime in, but I am not convinced that the fan "sucking"
> instead of "blowing" is your problem. 80's FC's (including my
> old '82 FC) had basically the same radiator/fan set-up and the fan
> sucked in so as to not be blowing hot air out on the "porch" area.
> As long as the fan is moving air across the radiator, it should not
> matter which direction it is moving.
>
> You may want to look for plugged hoses on a radiator stuck closed.
>
> Scott
>
> --- In WanderlodgeForum@
> yahoogroups.com, Greg Young
> wrote:
> >
> > Hi Bryan & Scott and everybody
> >
> > Follow up to our generator issues. I had the radiator serviced
and
> it was only 20% blocked, so the guess is that was not the problem.
> However, I was wrong about the fan. Ours appeared to be sucking air
> in rather than blowing out. There is a junction box leading to the
> fan motor, which was wired normally - Hot (black) to black, neutral
> (white) to white. I reversed these and the motor continues to suck
> in. So how does one reverse the wiring and actually make it change
> direction?
> >
> > I'm also a little baffled about oil levels and think we may have
a
> plug somewhere - the dipstick showed oil level above max, yet when
I
> opened the plug, with the filter off and the oil filler cap off, no
> oil came out. Putting in more resulted in oil spilling out the
> breather hose.
> >
> > Sorry, I'm not a gearhead like so many of you, but I can follow
> instructions if they're detailed enough...
> >
> > Thanks!
> > Greg Young
> > 1986 PT40
> > Escondido, CA
> > (760) 807-1727
> >
> >
> >
> > ----- Original Message ----
> > From: Greg Young
> > To: WanderlodgeForum@
> yahoogroups.com
> > Sent: Thursday, August 7, 2008 7:17:51 PM
> > Subject: Re: [WanderlodgeForum] Re: Kohler generator overheating
> >
> >
> > 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@ yahoogroups. 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@ 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: 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
> > >
> >
>

[Leroy Eckert]

--- On Thu, 8/14/08, Scott Forman <scottforman75@...> wrote: From: Scott Forman <scottforman75@...> Subject: [WanderlodgeForum] Re: Kohler generator overheating To: WanderlodgeForum@yahoogroups.com Date: Thursday, August 14, 2008, 10:39 PM This is not a squirrel cage. The pre-87 units are old-fashioned fan units. Scott --- In "WanderlodgeForum%40yahoogroups.com", Leroy Eckert wrote: > > If you look closely, there is an arrow on the squirrel cage housing showing direction. At least there is on mine. The motor on mine is 208v. I have a typical wiring diagram from the box to the fan motor if anyone needs it. > Leroy Eckert > 1990 WB-40 Smoke N Mirrors > Dahlonega, GA > Royale Conversion > > --- On Thu, 8/14/08, Bryan Altier wrote: > From: Bryan Altier > Subject: Re: [WanderlodgeForum] Re: Kohler generator overheating > To: "WanderlodgeForum%40yahoogroups.com" > Date: Thursday, August 14, 2008, 9:05 PM > > > > > > > > > > > > > > > Greg, > Looking at the motor at the end of the fan, mine > had two wires coming out of the winding and wrapped up before going back into > the winding. I removed the wrapping and found that there were two > connectors that I swapped causing the motor to run in the proper > direction. Look and see if there is a sticker on the end of the fan > housing with an arrow "direction". Since I got mine blowing out the bottom > of the fan my overheating problems are apparently gone. > > Bryan Altier > 88 WLWB 40 > Greenville, SC > > ----- Original Message ----- > From: > Greg Young > To: WanderlodgeForum@ yahoogroups. com > > Sent: Thursday, August 14, 2008 7:36 > PM > Subject: Re: [WanderlodgeForum] Re: > Kohler generator overheating > > > > > > Hi Bryan & Scott and everybody > > Follow up to our generator > issues. I had the radiator serviced and it was only 20% blocked, so the > guess is that was not the problem. However, I was wrong about the > fan. Ours appeared to be sucking air in rather than blowing out. > There is a junction box leading to the fan motor, which was wired normally - > Hot (black) to black, neutral (white) to white. I reversed these and the > motor continues to suck in. So how does one reverse the wiring and > actually make it change direction? > > I'm also a little baffled about oil > levels and think we may have a plug somewhere - the dipstick showed oil level > above max, yet when I opened the plug, with the filter off and the oil filler > cap off, no oil came out. Putting in more resulted in oil spilling out > the breather hose. > > Sorry, I'm not a gearhead like so many of you, but I > can follow instructions if they're detailed enough... > > Thanks! > Greg > Young > 1986 PT40 > Escondido, CA > (760) 807-1727 > > > > ----- > Original Message ---- > From: Greg Young > To: > WanderlodgeForum@ yahoogroups. com > Sent: Thursday, August 7, 2008 > 7:17:51 PM > Subject: Re: [WanderlodgeForum] Re: Kohler generator > overheating > > > > 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@ gmail.com> > 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@ > yahoogroups. 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@ > 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: 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 > > >