To Jerry-Motor Service Instructions
Hey, there, Jerry--Nathan Thomas here, at your service. I will be glad to share with you on how to service the motor on your machine. Those old XXX's or 30's run forever! Here are some step-by-step instructions on how to work on the motor.
The first thing you will need to remove is the blower cover, which is held on by a round knob on each side, so there are a total of 2 knobs. After removing the blower, the next step is to unscrew the two little nuts at the bottom of the threaded shaft on each side of the machine. This shaft is threaded, and the knobs screw onto it which holds the blower on. You don't have to unscrew the nuts clear off. After unscrewing the nuts you will then be able to pull the 2 threaded shafts toward you. The end of the shafts have a little hook that fits into a groove that holds the front cover on. After loosening the nuts and loosening the shafts, you can then pull the front cover off and you will then need to pull the two wires from the motor out of the switch. The wires will come out, they simply plug into the rear of the switch. To remove the motor for service, there are three nuts that hold the motor in. Loosen the nuts, and pull the motor unit out. To dis-assemble the motor, there are 4 long screws and nuts on the fan housings. Remove the screws, and the top fan housing will come off. Loosen and remove the large nut in the center of the top fan. It's a good idea to label your fans, the first fan is the Top Fan, so label it "TOP". Remove the top fan, and the second fan housing, and then remove your bottom fan, labeling it "Bottom". The fans have little round nubs in the center of them, the bottom fan's nub faces up, and the top fan's nub faces down. The reason to label your fans is so they will be replaced in the proper order. Take an old brush, and with warm soapy water, thoroughly clean the fans, you want all that dirt out of there, so your machine will have good suction. To continue dis-assembly of the motor, and to gain access to the bearings, remove the three screws holding the bearing housing on. Also loosen the two screws at the front of the motor, on top of the side of the motor nearest to the commutator/armature. The two screws at the front of the motor is what holds the front bearing cover on. It will need to be removed so you can pull the armature and bearing assembly out. With the same brush and soapy water, clean the inside of the motor, and after cleaning all parts make sure to dry them good. Use a hair dryer. You will need a bearing puller to use to remove the bearings. Most bearing places have them. Usually when I service a machine I replace both bearings. Remove the carbon brushes by loosening the little brass screw on the side of the carbon brush housings, and also clean the inside of the carbon brush housings, using a brush and a little lime-away. The lime away will get those insides of the housings shining like new! To assemble your motor, simply reverse the directions, assemble, and test. If you will carefully follow my directions, and with a good cleaning, your machine will work like new! Should you have any further questions or need help--feel free to contact me. My e-mail is
[email protected].
Sincerely,
Nathan L. Thomas
