Does anyone have any recommendations on getting a 76B reconditioned? I have one which works ok, but the bearings have seen better days and are pretty rough and noisy. I don't have the tools on hand to do the job properly myself. One thing I was considering was to see if a shop that rebuilds automotive starters/alternators would be able to do it, given that the 76B's motor is pretty close to a truck starter (series-wound 12V DC.)
Any thoughts?
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Siren Man
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When I was restoring my Model 28, I went to my nearest fire station to ask if they knew of such a place. They didn't. But its worth a try. If anyone knows, it would be them; and besides, firemen are usually quite friendly.
And if that doesnt work, you can always replace the motor. I am sure that Grainger makes a motor that would work perfectly.
And if that doesnt work, you can always replace the motor. I am sure that Grainger makes a motor that would work perfectly.
Have: A-4 Vibratone bell, Model 60 klaxon.
Any good starter/alternator shop should be able to rebuild the motor, at least my local shop had no trouble with the motor of my 77GB. You will have a hard time finding a replacement motor because of the armature shaft design to accomadate the ball and ramp clutch assembly.
I disassembled mine and took them the motor only. I did not trust them to remove the clutch and rotor from the siren and maybe lose some of those parts that are hard to find. They should have replacement motor bearings on hand but you will probably need to take them a 5204 ZZ (double row) bearing for the rotor "coaster" bearing. Try and find the ZZ 5204 which has metal shields, they also make the 5204 with plastic shields but these will touch the balls in the bearing were the metal shield will not. This helps it coast better. I removed my rotor bearing with a brass punch and installed the new one with a large socket and a hammer. I suggest you let the repair shop do this with a bearing press.
All you need to disassemble the clutch/rotor assembly is an allen wrench, a set of adjustable channlelock or vise grip pliers and a small punch and hammer. If you would like me to walk you thru the procedure, PM me and I will be glad to help. If you decide to let the motor rebuilder do it, caution them that the rotor bearing retainer, threaded collar that holds the rotor on the motor shaft, is a reverse thread.
I disassembled mine and took them the motor only. I did not trust them to remove the clutch and rotor from the siren and maybe lose some of those parts that are hard to find. They should have replacement motor bearings on hand but you will probably need to take them a 5204 ZZ (double row) bearing for the rotor "coaster" bearing. Try and find the ZZ 5204 which has metal shields, they also make the 5204 with plastic shields but these will touch the balls in the bearing were the metal shield will not. This helps it coast better. I removed my rotor bearing with a brass punch and installed the new one with a large socket and a hammer. I suggest you let the repair shop do this with a bearing press.
All you need to disassemble the clutch/rotor assembly is an allen wrench, a set of adjustable channlelock or vise grip pliers and a small punch and hammer. If you would like me to walk you thru the procedure, PM me and I will be glad to help. If you decide to let the motor rebuilder do it, caution them that the rotor bearing retainer, threaded collar that holds the rotor on the motor shaft, is a reverse thread.
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