The KOOL-O-MATIC fan motor in our coach developed an annoying squeak and last year I disassembled the motor and cleaned/lubed it and the problem seemed to be solved. However, the squeak returned and it became obvious the only fix would be a new motor. Knowing that new OEM parts are almost impossible to find I replaced the motor with a universal blower motor from NAPA. The original motor is 3" in diameter and the replacement is 3 1/4" but the mounting band "adapted" by using one longer 1/4" diameter bolt. The replacement motor will rotate cw or ccw so the orange wire will need to be + for proper rotation (cw looking down at the shaft). Because on high speed the starting amperage of the new motor is higher I changed the (labeled "ventilator") fuse to 20 amp (the wiring is more than adequate for 20 amps). As a test I ran it four hours yesterday and all was well.
The NAPA part number is 655-2378 and my cost was $36.42 plus tax.
Howdy Don,
Thanks for this great information. I have bookmarked this topic for future reference.
Dave A
Nice work!
Do you still have two speeds?
JD
Hello JD,
Yes everything works from the original wall mounted thermostat and two-speed rocker switch. I can't be sure but the high speed setting seems to run at slightly higher RPMs than with the old motor; we typically run the fan on low speed anyway. We really like our KOOL-O-MATIC fan and I'm glad there's was a way of of keeping it alive.