1933 model b generator
- Thread starter FrankWest
- Start date
DavidG
Well-known member
Is the front end of your generator a steel stamping or a die casting? Also, does the back of the generator have holes in it for ventilation? I ask as the four cylinder generator underwent a number of changes starting during the '33 model year and some generators that have been replaced in service over the years are the last ('34 model year) version.
Bruce Lancaster
Member Emeritus
B type is less complex in the bearings and such...that is a V8 type there. Later B ones as above really differ from late Model A ones only in the end plates and in slightly different hardware connecting innards to cut out, so Model A suppliers are good resources:
http://www.brattons.com/prodtype.as...geHistory=cat&strKeywords=&strSearchCriteria=
http://www.brattons.com/prodtype.as...geHistory=cat&strKeywords=&strSearchCriteria=
FrankWest
Well-known member
Is the model B 1933 generator a Model A part?
DavidG
Well-known member
Your generator could be the original as it conforms to late '33 specs. The photo below is the only exploded view that I'm aware of for it. Note that it has a single ball bearing assembly (no separate cone and race) unlike the two tapered roller bearings used in the V-8 generator.
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Bruce Lancaster
Member Emeritus
Innards are almost all the same as later Model A...see bratton's, which is beginning to note post-1931 interchange. Ends and hookup hardware for cutout are main changes, so you can use bratton to supply the bearings and bits.
Bruce Lancaster
Member Emeritus
That's why I say LATE Model A...late ones and B's have a rear bushing, earlier a bearing back there, and there are other differences. Just go to a supplier who lists everything for the A's, and where there's a difference be sure to choose one listed for '31...Bratton is begiining to note parts that interchange with B, an advantage. Armature also has slight differences between versions. late is again same as B.
There are different end plates (more than one design) used in B's, and the little tab that connects to cutout on A's is replaced by a wire, but generally all the stuff you need for an overhaul is the same for 1931 A's...meaning almost all parts are readily available.
There are different end plates (more than one design) used in B's, and the little tab that connects to cutout on A's is replaced by a wire, but generally all the stuff you need for an overhaul is the same for 1931 A's...meaning almost all parts are readily available.
FrankWest
Well-known member
Thanks for your help Bruce.
I have been told that my generator is one of the original ones that most likely came with the car. It still works, but it seems that it does not spin as easily as it should and I actually get a whistling sound when turning the pulley by hand. And I think it is responsible for loud moaning sound hear while driving sometimes. So I want to just change out the bearings and leave everything else original. I definitely do not want to turn it in as a core for rebuilding unless I really have no alternative. I would rather just buy a new unit to use in my car while I try to restore this original generator.
Bruce Lancaster
Member Emeritus
Keep that generator! Wipe down the coils and armatures, the ends and hardware can go into solvent. Change bearing and bushing, replace brushes if worn short, perhaps change the littl connector wires. Cut out can be opened up with some effort and its contacts cleaned up...you do not want a repro one!
Bruce Lancaster
Member Emeritus
Bratton's has many of them labeled as fitting '32-4, but basically you just need to pretend you have a correct '31 Model A with bearing in front, bushing in back, and late A style armature. You have a wire coming out where the A has a little tab connection, which does not really affect much.