Mep 002a & 003a alternator bearing

[metalworker393]

Hello and how is everyone today. I am looking to replace a bearing on my 003a alternator and would like to know what have other members done. I see the milspec bearing calls for a certain type of grease in what they use. Have any of you used something with a diffrent type of grease. I'm not going to subject the machine to things the military might encounter but what is a suitable replacement for it.
I picked up an alternator a couple of weeks ago to replace the one on an 003 that quit making power. It is hard to hear over the engine noise but it sounds like a scratching noise coming from the alternator. i have been in contact with a few members about a replacement end, and this one came up for a 100 bucks I couldn't pass it up. I have it dissasembled, I want to replace the Diodes and bearing before I put it together and install it.
Thanks metalworker393

 

[gimpyrobb]

Are you talking about the generator under the blower fan?

 

[Jimc]

if its actually the main generator rotor bearing your talking about, that big one thats about 2.5" dia or so. i have never seen one of those go bad and are rated for like 100,000hours of use. bearings are usually standardized and i would imagine that the bearing is marked with what it actually is. i have had my 003 rotor and bearing out as well but i certainly dont remember the bearing size or style. it would be a number like 625ZZ or something along those lines. any bearing supplier should be able to get you the bearing.

 

[metalworker393]

Yep thats what I'm talking about gimp, just thought it wouldn't be a bad idea to change it while the end bell is off.

 

[PeterD]

... I want to replace the Diodes and b...

Realize that diodes are not wear items, they are either good or bad. Replacing good original diodes that have a proven 'track record' with diodes that are new, probably imported, and certainly don't have a 'track record' increases the potential for failure (infant or early life).