Genny cooling issues

[Greg Young]

Hey Ralph - Thanks for the pointer. No such switch on my control box - there are three wiring harnesses (one on the back leading to the coach and two on the tront leading to the genny), one 10A bus fuse (which is still good) and the start/stop and preheat switches. That's all.

Thanks!
Greg
86 PT-40
Escondido CA

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From: Ralph L. Fullenwider
To:
WanderlodgeForum@yahoogroups.com
Sent: Thursday, April 30, 2009 2:00:36 PM
Subject: Re: [WanderlodgeForum] Genny cooling issues

Hi Greg:



Open the gen set slide and on the left side of the control box see if there

is a switch. This is not the start stop or preheat switch. Some of the

Yammar sets have a switch that cuts the cooling fan off.



Safe travels,



Ralph and Charolette Fullenwider

84FC35 "Ruff Diamond"

Duncan, Oklahoma



At 01:51 PM 4/30/2009 -0700, you wrote:



>Hi Everybody -

>

>Ernie and all - Thanks on the pointers on the Chrysler power seat

>controls. Found one, and after a little plastic modification it fit and

>works perfectly. Now we can move the co-pilot's seat again!

>

>This one's a little more critical. Late last week we had the generator

>worked on after it completely stopped producing power - its rotor bearing

>was shot and the stator and rotor were about to start arcing due to

>insulation wear. Had them "washed, baked and dipped," and $1700 later are

>now getting plenty of power. However, it seemed to be overheating still,

>as it did on last year's long trip. We have a 1986 PT-40 with the

>side-mounted radiator and the Kohler / Yanmar12.5K generator. So I've

>pulled the radiator and noted that the fan wasn't getting any current from

>the generator. I bypassed the feed and found that the fan blades were

>binding on the housing. I've now got the binding fixed, so it will rotate

>freely - but two things still baffle me:

>

>1. Is there a circuit breaker or fuse somewhere on the power feed to the

>fan that could have blown because the fan blades were stuck? Any idea of

>where to look for this?

>2. Have noted that the fan was installed so that the airflow is from

>outside to inside - pulling air through the radiator and exhausting it out

>through the cage and to the center of the coach. Is this

>normal? Functional? Flipping the fan blade doesn't help - it's got

>scooped fins and only collects air in one direction. Thoughts? The guys

>who repaired the genny suggested I get a 12V radiator fan at a local auto

>parts store, but then I'm faced with having that switch on when the

>genny's running.

>

>Thanks!

>Greg Young

>

>86 PT-40 Bluefire

>itching to get on the road.

>

>