KOOLOMATIC FAN MOTOR/SWITCH
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03-31-2009, 13:57
Post: #5
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KOOLOMATIC FAN MOTOR/SWITCH
--- In WanderlodgeForum@yahoogroups.com, Pete Masterson
>No modification needed to the NAPA motor.Lee Condosta Holden Beach nc > In December, I purchased an electric motor replacement for the Kool-o- > matic from Grainger, item #1LWK8 for $23.85. However, that item was > discontinued. A new motor, Grainger item #3LCH7, seems to be the > successor to the motor I bought. It's priced at $39.10 and has very > nearly the exact same specifications. > > This motor is not a _direct_ replacement for the OEM Kool-O-Matic fan > motor. The motor body was very slightly larger in diameter than the > OEM motor, but the mounting easily adjusted to hold it tightly. > > Fitting the fan blades was slightly more of a problem. First I cut off > the mounting studs. Then there was the slightly more difficult problem > that the shaft (1/4" dia.) is undersized. After a couple of > ineffective tries to shim the shaft, I purchased a 1/16" thick sheet > of aluminum plate, cut a rectangle and bent it into a cylinder that > just fit over the shaft and within the fan's shaft-hole. A few light > taps with hammer, and the fan was seated. Tightening the shaft > clamping bolt (against the flattened edge of the shaft) finished the > process. > > A hand-held test (hold on tight, the fan generates a lot of torque) > showed that the fan was very slightly out of balance. Unfortunately, I > had no way to balance the fan. (A static balance test before mounting > the fan did not show any significant balance problems). Once I > installed the fan in the Kool-O-Matic vent opening, a trial at the > lowest speed proved that the apparent imbalance was not an issue. The > fan operated at all three speed settings with no problems. > Subsequently, I decided that there was not sufficient difference in > fan noise (with this motor) between the low and high settings, so I > set the switch to high and buttoned everything up. > > In a final, and longer test, I noticed an odd whistling noise when the > fan was operating. After some experimenting, I discovered that the > sliding window in the entry door was allowing wind to whistle in > through gaps in its weather stripping. Apparently, the new motor > causes the fan to _really_ suck air. (Probably best to have a window > or another vent open to allow air to flow through the coach.) > > Considering the new, higher price, I'm not sure that the extra hassle > in making this motor work with the Kool-O-Matic as compared to the > NAPA fan motor (assuming it's a direct replacement). However, for me > the $23.85 vs. $69 price was worth the savings. > > Grainger has other fan motors listed that might work, but they are all > more expensive. > > Pete Masterson > '95 Blue Bird Wanderlodge WBDA 42 > El Sobrante CA > aeonix1@... > > > > On Mar 31, 2009, at 4:58 AM, Ernie Ekberg wrote: > > > Lee, that is good to know. Napa will be around for quite a while. > > > > Ernie Ekberg > > 83PT40 > > Wanderlodge > > Weatherford, Tx > > http://autos.groups.yahoo.com/group/erni...gandrepair > > > > > > --- On Mon, 3/30/09, lcondosta > > From: lcondosta > > Subject: [WanderlodgeForum] KOOLOMATIC FAN MOTOR/SWITCH > > To: WanderlodgeForum@yahoogroups.com > > Date: Monday, March 30, 2009, 8:17 PM > > > > I PURCHASED A MOTOR FROM NAPA PARTS.Part#655- 2012.Take the swicth > > to a NAPA store and they have a switch book .If I remember correctly > > that switch is a heater three speed switch early GM.Hope this > > helps.Lee Condosta 85 PT 40 Holden Beach N.C > > > > > > > > > |
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Messages In This Thread |
KOOLOMATIC FAN MOTOR/SWITCH - lcondosta - 03-30-2009, 13:17
KOOLOMATIC FAN MOTOR/SWITCH - lcondosta - 03-30-2009, 13:17
KOOLOMATIC FAN MOTOR/SWITCH - Ernie Ekberg - 03-30-2009, 23:58
KOOLOMATIC FAN MOTOR/SWITCH - Pete Masterson - 03-31-2009, 07:09
KOOLOMATIC FAN MOTOR/SWITCH - lcondosta - 03-31-2009 13:57
KOOLOMATIC FAN MOTOR/SWITCH - pattypape - 03-31-2009, 23:05
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