Noisy alternator bearing when warm

[Franco_boater]

Hello, i have got Mercruiser 4.3 2005 and noticed when warm engine my alternator is squeaking.

Can I replace by myself the bearing? I think it’s delco alternator.

There is front and the rear bearing which is more difficult to reach.

Should I replace the front one or the rear is also prone to fail?

My alternator works nice so I’m wondering if it’s time for brushes regulator etc when it will be in the bench? But I think OEM parts will still be better than nowadays crap?



Ciao

 

[Bondo]

Hello, i have got Mercruiser 4.3 2005 and noticed when warm engine my alternator is squeaking.

Can I replace by myself the bearing? I think it’s delco alternator.

There is front and the rear bearing which is more difficult to reach.

Should I replace the front one or the rear is also prone to fail?

My alternator works nice so I’m wondering if it’s time for brushes regulator etc when it will be in the bench? But I think OEM parts will still be better than nowadays crap?



Ciao

Ayuh,...... I guess you Can,.....

In all my years, I've never rebuilt one,...... Used to have an electrical shop in the area,.... Would bring it there, 'n have them do it,....
Now a days, I'd most likely just go buy a reman somewhere,....

But of course, that'll be after I run through all the ole take-offs I've got stashed,....

 

[Rick Stephens]

I've rebuilt a gazzillion alternators. You may have to insert paper clips to hold the brushes off the rotor while you reassemble, but replacing a bearing is standard easy fare.

 

[Franco_boater]

Are there any kits avaiable for rebuild??

 

[Scott Danforth]

Are there any kits avaiable for rebuild??

Yes, however you have to research electrical rebuild sites

 

[Rick Stephens]

If was mine, I would tear it down and remove the bearing. Take that down to the NAPA auto parts store or the machine shop in town and have them pull a replacement bearing off the shelf for me. Pretty good chance they have what I need in hand. If not them, then the tractor dealer down the street. That is the entirety of the shops in my town, but you get the idea of who would be likely sources.

 

[Silvertip]

GM alternator rebuild kits are available at many farm stores (Fleet Farm to name just one). Contains the bearings, diode trio if the alternator has one, and internal reglator and brushes.

 

[Franco_boater]

Guys I am not from US, only chance is I can order in US so any help is much appreciated

 

[Scott Danforth]

(Fleet Farm to name just one).

god I miss fleet farm. besides having what you need and not having what you dont. they have ammunition.

 

[dubs283]

god I miss fleet farm. besides having what you need and not having what you dont. they have ammunition.

Preach

 

[Rick Stephens]

Guys I am not from US, only chance is I can order in US so any help is much appreciated

I'm not much use to your there. You can probably pull numbers off the alternator and we can go a hunting a kit. I'd still try and find a bearing, even elsewhere on this big world.

 

[dwco5051]

I remembered the front bearing number from one I changed a few years ago and just entered Cuscinetto XXXss where XXX was replaced with the actual number on www.ebay.it found it right away. Find you alternator model number and do a search to find your bearing number. I have replaced several over the years. In all cases the only bad bearing was the one on the drive end. The other end is a smaller one and I would still replace it too since I already had the thing apart. Guessing around 20 Euro for both.

 

[Scott06]

Just wait for winter take alternator apart and size up bearings likely will be a standard bearing

 

[Scott Danforth]

Guys I am not from US, only chance is I can order in US so any help is much appreciated

Rockauto.com and summit racing both ship to Australia, Scotland, and the Netherlands. So they will ship wherever you are

 

[Franco_boater]

Thanks, Yes i Know Summit racing. Bearings are not a problem but I mean about the voltage regulator and other stuff which will be good to change when I will have this at the bench...
i think its AC Delco Alternator 7Si

19020611​

All the best!

 

[Franco_boater]

Alternator Rebuild Kit for Pleasurecraft Crusader (7Si Delco Ref 19020615) Voltage Regulator, Bearings, & Brushes - 8469RK

<h3> Alternator Repair / Rebuild Kit With Voltage Regulator, Bearings, Brushes, SlipRing </h3> <ul> <li>Voltage Regulator 12 Volt, A-Circuit, S-L Terminals, 14.1 Voltage Set Point / Replaces Delco 220087, 271940, Other D940 </li> <li>Premium NTN Brand Bearing 6203 17x40x12mm Ref# 10467830...

www.maniacelectricmotors.com