Harman PF100 Distribution Blower Motor Replacement

[Brian in NH]

Hi Guys,
My Harman PF100 distribution blower motor was making noise and seems to have stopped working completely. The replacement motor part number is 3-20-36648. The motor in the unit is a Dayton 4M177A 1/5 hp. 115V 1050/3 spd. 8.3 amps. 42YZ frame. Grainger is no longer carrying this motor or says it's discontinued with no replacement. Has anyone replaced theirs using motors other than the OE part number or something near to OE ? Grainger's availably lacks in Amps meeting the current 8.3. They show one at 7.0, but I don't want to stress it out too much by putting something in that's inadequate. I can't find any spec information on the OE part number, nor do I know if the Dayton was OE as I'm the second owner of this unit. I've had it 16 years, nor do I know how long they last for in general. I'm waiting on a call back from my local dealer to check availability for a replacement using the Harman part number above.
I haven't tested the thermal switch in the plenum as of yet, but moving it to one side, it does stop the auger feed, so I made an early assumption it was still functioning.
Any suggestions would be appreciated and helpful.
Thanks in advance.
Brian

 

[Dataman]

Don't know if it will help this is parts list I have for that Stove. Need SN to narrow it down.

 

[Former Farmer]

Harman, Heatilator 1000 CFM Furnace Blower Motor 3-20-36648

Harman OEM PF100, SF1500A, SF2500A Furnace Blower Motor. Heatilator Eco-Choice BA100. 1000 CFM Distribution Convection Fan. 3-20-36648, Final Inventory.

pellethead.com

They show the motor as a Century DA3J094N

 

[Whitenuckler]

Grainger 4M177 5" Diameter Direct Drive Blower Motor 1/5 HP, 115 Volt, 1050 RPM, 3 Speed - All Around Industry Supply | AAIS

Item Specifications H.P. 1/5 Speeds 3 Amps 7.3-4.8-3.8 Rotation CWSE RPM 1050 Bearings Sleeve Diameter (In.) 5 Enclosure Open Mounting Resilient Rings Service Factor 1.00 Motor Type Shaded Pole Frame 42 Overload Protection Automatic Phase 1 Shaft Diameter (In.) 1/2 Shafts 1 Hertz 60 Shaft...

allaroundindustrysupply.com

This is what I found...missing the "A"