Cool/Heat: NAPA heater motor #655-1020

[s2dwagon]

I just replaced my 6 volt defroster with the NAPA #655-1020. Going from 6 volt to 12 volt. Works great!

I need to do the heater motor also, since it is still 6 volt. I would like to hear from some of you who have already done this, as I have a question about this motor in the frnder-well location. The thing that concerns me is the motor being located in the fender-well right behind the front tire. I can't tell if this motor is water proof, or even drip proof. There was no information in the box or on the internet and will be subject to water spray from the front tire.

Have any of you had any problems with moisture getting into this heater motor?

Thanks,

Scott

[Ray Stewart]

The Napa 655-1020 end bells are flared out just a little while the original motor was a more sealed housing. I siliconed the end bells-to-side-of-motor flare (end bell & shaft bell), sealed the six punched depressions at the end bell (opposite the shaft) and around the bolts of the new Napa motor. Use clear silicone and take your time... the sealer isn't even noticable when its dry. Don't know how the motor would hold up without the sealer.

Ray Stewart SDC
51 pick-up
57 silver hawk
62 lark

[HammondA100]

I noticed the defrost motor must run counter-clockwise. Can you verify this 1020 NAPA motor works that direction? Meanwhile the heater blower is clockwise as I did replace that one with the 1022.

[Dan Timberlake]

NAPA claims the 1020 is reversible.

http://www.napaonline.com/Catalog/CatalogItemDetail.aspx/Blower-Motor-AC-Heater/_/R-BK_6551020_0361161382

Looks like multiple wires to keep track of. Maybe the instructions say how.

[brian6373]

Both motors are sealed, and are reversible. One wire is positive the other is ground. Reversing the wires polarity changes the direction of rotation.

Brian

[kamzack]

Is motor 2 speed or single?

[brian6373]

They are single speed. Some heater/defroster switches have a resistor on the back to get two speeds.

Brian

[HammondA100]

I have both now - the 1022 is clockwise and no other notation while the 1020 is stamped and the instruction/data sheet says reversible just by changing polarity. I may guess the 1022 is able to do that but I wouldn't want to try. I forgot to look if that one was of higher RPM - I'll check and post an update but both can be controlled by a rheostat or resistor bank if needed - otherwise they are single speed.

[jimmijim8]

DC motors don't care if they run clockwise or counter clockwise. Switch the leads. cheers jimmijim

I noticed the defrost motor must run counter-clockwise. Can you verify this 1020 NAPA motor works that direction? Meanwhile the heater blower is clockwise as I did replace that one with the 1022.

[bezhawk]

It's the squirrel cage fan and housing that are direction of rotation dependant. Otherwise they won't push any air