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Topic: Generator Bearings  (Read 3157 times)

Offline Zen

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Generator Bearings

« on: March 31, 2006, 10:25:57 AM »
I've got a fairly new Bosch generator that has a bearing going bad.  I've replace brushes a bunch of times, but never attempted replaceing the bearings.

Seems like I've heard it's pretty easy but I've never taken one apart.  Has anyone done this before?  Would I be better off buying a new generator?

Offline Zen

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Generator Bearings

« Reply #1 on: March 31, 2006, 10:29:51 AM »
Another option:  I've got a type 2 generator . . . one of those that's longer than a bug generator and needs special tin so the pullies will line up.  I don't have the special tin.   :(   I ran it for a while without the tin, but having to stop and put the belt back on every fifty or sixty miles gets old after a while.  Sooooooooo . . . does anyone out there have the tin for a type 2 generator they would be willing to part with???

Offline Ret.Bugtech

Generator Bearings

« Reply #2 on: March 31, 2006, 11:25:55 AM »
Zen, Replacing the brgs. is not a to big of a hassel. Take the brushes out and the little screw thats behind the pulley then take the 2 long screws that hold the end housings together out. Then you pry ,beat ,bang the housings off the case. The big problem sometimes is getting the spacers off the shaft . One behind the pulley and one behind the fan hub.Getting these off makes it a little easier to get the end housings off.
  Can you still buy brgs ?  Good luck finding Type-2 tin.
When all else fails,there is a GR-15x Bosch waiting for you somewhere.

Offline Zen

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Generator Bearings

« Reply #3 on: March 31, 2006, 11:41:58 AM »
The bearings are $3.50 each from CIP1 . . . $7.50 each at Auto Zone.  CIP doesn't do free shipping and it cost more for super slow shipping than it does for the bearings, so I'm gonn'a order some from Auto Zone.

Offline Ret.Bugtech

Generator Bearings

« Reply #4 on: April 01, 2006, 11:57:35 AM »
Auto Zone ?   Be sure to check and make sure the ball bearings are round and not square. It really gets me angry when that happens. :evil:

Offline Zen

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Generator Bearings

« Reply #5 on: April 01, 2006, 06:32:14 PM »
I've bought enough stuff from the "Zone" to learn to check for square bearings!  They listed a Timkin bearing but it was something like $17 EACH  :shock: . . . two bearings would put you well on your way to a new generator!   :lol:  So, I'll give the Chineese a shot . . . I'm sure that's where these cheaper bearings will be coming from.  This generator is only about 2 years old, so it was probably built with Chineese bearings anyway!

On second thought, I've got a couple of burnt up, 40-year-old generators out in the garage.  I'll probably be better off robbing the old German bearings out of them and tossing the new bearings in the Godfather's pile of Dasher parts.  It doesn't matter if the balls are round, oval or square . . . when he beans somebody upside the head with 'em, it'll get their attention.

No, on third thought . . . I'd probably end up being the one he beaned in the head with them.    :lol:  :lol:

 :wink:

Offline Zen

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Generator Bearings

« Reply #6 on: April 02, 2006, 06:34:50 PM »
OK, I miss-diagnosed the problem.  At first, I thought it was a loose fan.  But when I reached in back and moved the fan, it had what felt like a little up-and-down play, but didn't seem loose.  The more I listened to it, the more it sounded like a bad bearing.  Jason stopped by the other night and as soon as he heard it start up he said it sounded like a bad bearing.  So, I ordered the bearings.  I figured the play I felt was wear in the bad bearing.

I just pulled the fan shroud and took the fan off.  When I got it out where I could see it, it was obvious that the fan was, in fact, running loose.  But, the nut was super tight!   :-k  That didn't make sense until I finally got the nut loose.  The fan wasn't loose, it was broken.  The very center part was locked in place like it should have been and about a half inch out from the center there was a hairline crack . . . luckily it wasn't in a perfect circle, so it kept the fan turning.  The good news is because it was tight in the center, it didn't wear out the spacer.  The better news is I don't have to put Chineese bearings in my German generator.   8)

RetBugtech . . . have you ever seen one break out near the center?  If so, any idea what might have caused it?

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