Over the weekend, my 28yr old Amana microwave oven made a racket when I turned it on. Sounded like something rubbing against something else. Later when I pulled it apart, I found a small A/C fan motor positioned vertically with a small plastic squirrel cage blower on top and a smaller 4-blade fan blade on the other side.
I pulled the motor apart to lube the bushings and noticed that I can push the shaft all the way through and out from the rotor! Never seen that before. I found two indentions close together on the shaft that perhaps held circlips? Not sure how these would work.
What's going on now is that the shaft is slipping so badly due to its loose coupling with the rotor that only a fraction of the motor torque is being transferred to the two blowers. Dam odd...
IOW, I can power it up, hold on to the motor shaft and the rotor will spin all by itself!
I found this on the motor nameplate:
G1 A9TC 29030-17F 9321
120V-60HZ 1.9A
TP CLF 2.3LRA
C-87932-3MT TPL
The 'G1' could also be a 'GI' as it's just a short, vertical line. No joy on a web-search for this part. Comes up no hits.
Any small A/C motor guys out there? Tomorrow, I'm going to take it to a old-time HW store where several old guys hang out and ask them if they recognize it.
Missing my microwave.....
I pulled the motor apart to lube the bushings and noticed that I can push the shaft all the way through and out from the rotor! Never seen that before. I found two indentions close together on the shaft that perhaps held circlips? Not sure how these would work.
What's going on now is that the shaft is slipping so badly due to its loose coupling with the rotor that only a fraction of the motor torque is being transferred to the two blowers. Dam odd...
IOW, I can power it up, hold on to the motor shaft and the rotor will spin all by itself!
I found this on the motor nameplate:
G1 A9TC 29030-17F 9321
120V-60HZ 1.9A
TP CLF 2.3LRA
C-87932-3MT TPL
The 'G1' could also be a 'GI' as it's just a short, vertical line. No joy on a web-search for this part. Comes up no hits.
Any small A/C motor guys out there? Tomorrow, I'm going to take it to a old-time HW store where several old guys hang out and ask them if they recognize it.
Missing my microwave.....