| www.iFourWinns.com https://www.smwebhead.com/phpBB3/ |
|
| Noisy alternator https://www.smwebhead.com/phpBB3/viewtopic.php?f=21&t=14862 |
Page 1 of 1 |
| Author: | Fixer.5 [ Mon May 23, 2016 7:03 pm ] |
| Post subject: | Noisy alternator |
Is there a way to bench check an alternator for bearing noise? l have a 2000 H230 with 5.7 l V8 350 GSI engine. Fixer.5 |
|
| Author: | LouC [ Mon May 23, 2016 8:08 pm ] |
| Post subject: | Re: Noisy alternator |
You can use a mechanics stethoscope or just remove the belt and spin the pulley to feel for roughness in the bearing. It should be perfectly smooth. |
|
| Author: | rpengr [ Tue May 24, 2016 6:47 am ] |
| Post subject: | Re: Noisy alternator |
If you decide to replace it, you must use a Marine Alternator, not an Automotive Alternator. For my 2000 Horizon 240 (1996-1999 type model) with VP 5.7GS: I ordered a new alternator from http://www.rareelectrical.com AC165618 M59819 Back in Aug 2013 it was $77.48 Great price. I don't know if your model is the same, but they were able to cross reference numbers from my old alternator (sorry, I don't have those numbers anymore). Ray |
|
| Author: | LouC [ Tue May 24, 2016 11:14 am ] |
| Post subject: | Re: Noisy alternator |
Another good source is Arco Marine |
|
| Author: | Fixer.5 [ Tue May 24, 2016 4:23 pm ] |
| Post subject: | Re: Noisy alternator |
Thanks to all for your replies. I'll check for the play in the pulley. If necessary I'll look at the web sites You mentioned. Fixer.5 |
|
| Author: | Surface Interval [ Tue May 24, 2016 8:27 pm ] |
| Post subject: | Re: Noisy alternator |
You might check with your local auto parts store on whether they can test the alternator. If you need to change the alternator, absolutely use a marine alternator. |
|
| Author: | Capt. Hoss [ Wed May 25, 2016 8:07 am ] |
| Post subject: | Re: Noisy alternator |
I had mine rebuilt due to the expense of replacing it. That only cost about $65 3 years ago, so that may be an option for you as well. |
|
| Author: | GottWhat [ Wed May 25, 2016 8:33 am ] |
| Post subject: | Re: Noisy alternator |
Capt. Hoss wrote: I had mine rebuilt due to the expense of replacing it. That only cost about $65 3 years ago, so that may be an option for you as well. If you have a local alternator/starter repair guy, they can be very worthwhile. About 5 years ago, I had a starter rebuilt for an Aprilia Motorcycle. The new OEM replacement would have been north of $600 but was only $40 to rebuild. |
|
| Author: | LouC [ Thu May 26, 2016 6:12 am ] |
| Post subject: | Re: Noisy alternator |
After you install a new or rebuilt alt, always check the charging voltage at the battery with a digital voltmeter. The reason why I say this is because your dash gauge may read lower than the actual charging rate. On our boat my dash gauge would read 13V or a little higher but at the battery I was getting 15.5V! This was probably due to 2 different problems, that had the same cause, resistance in old wiring. On the OMC wiring harness, the alternator S wire (voltage sensing) comes from the ignition wiring circuit and over time, resistance can build up in some of the connections. So what happens is that this wire brings a lower than true reading on the actual charging rate of the batteries to the alt, which results in the alt raising its charging rate but that can over charge the battery. The dash gauge may read low for the same reason, resistance in old wiring. When I checked the voltage at the sense wire it was 9-10V whereas the batts were at 12.5. I got this information from Arco Electric. They advised not using the sense wire and instead installing a jumper wire from the large B+ terminal on the alt, to the S terminal on the alt. This will basically read batt voltage because the large B+ if you follow it back it terminates on the B+ (large terminal) on the starter solenoid which of course is connected to the battery or battery switch. After doing this, I got 14.2V at idle. So don't rely only on that dash gauge! |
|
| Author: | TheDanceII [ Thu May 26, 2016 6:48 am ] |
| Post subject: | Re: Noisy alternator |
Another good source that I have purchased several alternators and starters from thru the years is http://www.dbelectrical.com/ Just another option to check for pricing. |
|
| Author: | 230 Mike [ Thu May 26, 2016 9:49 am ] |
| Post subject: | Re: Noisy alternator |
GottWhat wrote: ...The new OEM replacement would have been north of $600 but was only $40 to rebuild. Now that sounds like an honest shop. We used to rebuild them ourselves all the time. Getting the pulley off is the hardest part of the whole job (and with the tools many people have on hand these days, that isn't hard either). New bearings, regulator, diode pack, brushes, and recondition the commutator - 2-hour job. It's criminal what they charge for a rebuilt alternator, marinized or not. Glory days... |
|
| Author: | GottWhat [ Thu May 26, 2016 2:41 pm ] |
| Post subject: | Re: Noisy alternator |
230 Mike wrote: GottWhat wrote: ...The new OEM replacement would have been north of $600 but was only $40 to rebuild. Now that sounds like an honest shop. We used to rebuild them ourselves all the time. Getting the pulley off is the hardest part of the whole job (and with the tools many people have on hand these days, that isn't hard either). New bearings, regulator, diode pack, brushes, and recondition the commutator - 2-hour job. It's criminal what they charge for a rebuilt alternator, marinized or not. Glory days... They have been in business for a long time and recently moved to a larger building. With that said, the starter didn't need a complete rebuild. The positive power post spun causing an internal wire to detach. He was able to take make that repair with a stern warning not to over-tighten. I'm just glad I didn't have to buy a new one. |
|
| Page 1 of 1 | All times are UTC - 6 hours [ DST ] |
| Powered by phpBB® Forum Software © phpBB Group http://www.phpbb.com/ |
|