Genny cooling issues

[Greg Young]

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.

Each time you judge yourself you break your heart.
-Kirpal Venanji